Arquivo da tag: Ecologia

Desmatamento na Amazônia na mídia – 10 de novembro de 2014

“Estamos indo direto para o matadouro”, diz o cientista Antonio Nobre (Portal do Meio Ambiente)

PUBLICADO 04 NOVEMBRO 2014.

Antonio Donato Nobre é um dos melhores cientistas brasileiros, pertence ao grupo do IPCC que mede o aquecimento da Terra e é um especialista em questões amazônicas. É mundialmente conhecido como pesquisador do INPE (Instituto Nacional de Pesquisas Espaciais).  Excerto do evento de lançamento do relatório “O Futuro Climático da Amazônia” em 30/10/2014.

Por Daniela Chiaretti, Do Valor

Eis a entrevista.

Quanto já desmatamos da Amazônia brasileira?

Só de corte raso, nos últimos 40 anos, foram três Estados de São Paulo, duas Alemanhas ou dois Japões. São 184 milhões de campos de futebol, quase um campo por brasileiro. A velocidade do desmatamento na Amazônia, em 40 anos, é de um trator com uma lâmina de três metros se deslocando a 726 km/hora – uma espécie de trator do fim do mundo. A área que foi destruída corresponde a uma estrada de 2 km de largura, da Terra até a Lua. E não estou falando de degradação florestal.

Essa é a “guilhotina de árvores” que o senhor menciona?

Foram destruídas 42 bilhões de árvores em 40 anos, cerca de 3 milhões de árvores por dia, 2.000 árvores por minuto. É o clima que sente cada árvore que é retirada da Amazônia. O desmatamento sem limite encontrou no clima um juiz que conta árvores, não esquece e não perdoa.

O sr. pode explicar?

Os cientistas que estudam a Amazônia estão preocupados com a percepção de que a floresta é potente e realmente condiciona o clima. É uma usina de serviços ambientais. Ela está sendo desmatada e o clima vai mudar.

A mudança climática…

A mudança climática já chegou. Não é mais previsão de modelo, é observação de noticiário. Os céticos do clima conseguiram uma vitória acachapante, fizeram com que governos não acreditassem mais no aquecimento global. As emissões aumentaram muito e o sistema climático planetário está entrando em falência como previsto, só que mais rápido.

No estudo o sr. relaciona destruição da floresta e clima?

A literatura é abundante, há milhares de artigos escritos, mais de duas dúzias de projetos grandes sendo feitos na Amazônia, com dezenas de cientistas. Li mais de 200 artigos em quatro meses. Nesse estudo quis esclarecer conexões, porque esta discussão é fragmentada. “Temos que desenvolver o agronegócio. Mas e a floresta? Ah, floresta não é assunto meu”. Cada um está envolvido naquilo que faz e a fragmentação tem sido mortal para os interesses da humanidade. Quando fiz a síntese destes estudos, eu me assombrei com a gravidade da situação.

Qual é a situação?

A situação é de realidade, não mais de previsões. No arco do desmatamento, por exemplo, o clima já mudou. Lá está aumentando a duração da estação seca e diminuindo a duração e volume de chuva. Agricultores do Mato Grosso tiveram que adiar o plantio da soja porque a chuva não chegou. Ano após ano, na região leste e sul da Amazônia, isso está ocorrendo. A seca de 2005 foi a mais forte em cem anos. Cinco anos depois teve a de 2010, mais forte que a de 2005. O efeito externo sobre a Amazônia já é realidade. O sistema está ficando em desarranjo.

A seca em São Paulo se relaciona com mudança do clima?

Pegue o noticiário: o que está acontecendo na Califórnia, na América Central, em partes da Colômbia? É mundial. Alguém pode dizer – é mundial, então não tem nada a ver com a Amazônia. É aí que está a incompreensão em relação à mudança climática: tem tudo a ver com o que temos feito no planeta, principalmente a destruição de florestas. A consequência não é só em relação ao CO2 que sai, mas a destruição de floresta destrói o sistema de condicionamento climático local. E isso, com as flutuações planetárias da mudança do clima, faz com que não tenhamos nenhuma almofada.

Almofada?

A floresta é um seguro, um sistema de proteção, uma poupança. Se aparece uma coisa imprevista e você tem algum dinheiro guardado, você se vira. É o que está acontecendo agora, não sentimos antes os efeitos da destruição de 500 anos da Mata Atlântica, porque tínhamos a “costa quente” da Amazônia. A sombra úmida da floresta amazônica não permitia que sentíssemos os efeitos da destruição das florestas locais.

O sr. fala em tapete tecnológico da Amazônia. O que é?

Eu queria mostrar o que significa aquela floresta. Até eucalipto tem mais valor que floresta nativa. Se olharmos no microscópio, a floresta é a hiper abundância de seres vivos e qualquer ser vivo supera toda a tecnologia humana somada. O tapete tecnológico da Amazônia é essa assembleia fantástica de seres vivos que operam no nível de átomos e moléculas, regulando o fluxo de substâncias e de energia e controlando o clima.

O sr. fala em cinco segredos da Amazônia. Quais são?

O primeiro é o transporte de umidade continente adentro. O oceano é a fonte primordial de toda a água. Evapora, o sal fica no oceano, o vento empurra o vapor que sobe e entra nos continentes. Na América do Sul, entra 3.000 km na direção dos Andes com umidade total. O segredo? Os gêiseres da floresta.

Gêiseres da floresta?

É uma metáfora. Uma árvore grande da Amazônia, com dez metros de raio de copa, coloca mais de mil litros de água em um dia, pela transpiração. Fizemos a conta para a bacia Amazônica toda, que tem 5,5 milhões de km2: saem desses gêiseres de madeira 20 bilhões de toneladas de água diárias. O rio Amazonas, o maior rio da Terra, que joga 20% de toda a água doce nos oceanos, despeja 17 bilhões de toneladas de água por dia. Esse fluxo de vapor que sai das árvores da floresta é maior que o Amazonas. Esse ar que vai progredindo para dentro do continente vai recebendo o fluxo de vapor da transpiração das árvores e se mantém úmido, e, portanto, com capacidade de fazer chover. Essa é uma característica das florestas

É o que faz falta em São Paulo?

Sim, porque aqui acabamos com a Mata Atlântica, não temos mais floresta. Qual o segundo segredo?

Chove muito na Amazônia e o ar é muito limpo, como nos oceanos, onde chove pouco. Como, se as atmosferas são muito semelhantes? A resposta veio do estudo de aromas e odores das árvores. Esses odores vão para atmosfera e quando têm radiação solar e vapor de água, reagem com o oxigênio e precipitam uma poeira finíssima, que atrai o vapor de água. É um nucleador de nuvens. Quando chove, lava a poeira, mas tem mais gás e o sistema se mantém.

E o terceiro segredo?

A floresta é um ar-condicionado e produz um rio amazônico de vapor. Essa formação maciça de nuvens abaixa a pressão da região e puxa o ar que está sobre os oceanos para dentro da floresta. É um cabo de guerra, uma bomba biótica de umidade, uma correia transportadora. E na Amazônia, as árvores são antigas e têm raízes que buscam água a mais de 20 metros de profundidade, no lençol freático. A floresta está ligada a um oceano de água doce embaixo dela. Quando cai a chuva, a água se infiltra e alimenta esses aquíferos.

Como tudo isso se relaciona à seca de São Paulo?

No quarto segredo. Estamos em um quadrilátero da sorte – uma região que vai de Cuiabá a Buenos Aires no Sul, São Paulo aos Andes e produz 70% do PIB da América do Sul. Se olharmos o mapa múndi, na mesma latitude estão o deserto do Atacama, o Kalahari, o deserto da Namíbia e o da Austrália. Mas aqui, não, essa região era para ser um deserto. E no entanto não é, é irrigada, tem umidade. De onde vem a chuva? A Amazônia exporta umidade. Durante vários meses do ano chega por aqui, através de “rios aéreos”, o vapor que é a fonte da chuva desse quadrilátero.

E o quinto segredo?

Onde tem floresta não tem furacão nem tornado. Ela tem um papel de regularização do clima, atenua os excessos, não deixa que se organizem esses eventos destrutivos. É um seguro.

Qual o impacto do desmatamento então?

O desmatamento leva ao clima inóspito, arrebenta com o sistema de condicionamento climático da floresta. É o mesmo que ter uma bomba que manda água para um prédio, mas eu a destruo, aí não tem mais água na minha torneira. É o que estamos fazendo. Ao desmatar, destruímos os mecanismos que produzem esses benefícios e ficamos expostos à violência geofísica. O clima inóspito é uma realidade, não é mais previsão. Tinha que ter parado com o desmatamento há dez anos. E parar agora não resolve mais.

Como não resolve mais?

Parar de desmatar é fundamental, mas não resolve mais. Temos que conter os danos ao máximo. Parar de desmatar é para ontem. A única reação adequada neste momento é fazer um esforço de guerra. A evidência científica diz que a única chance de recuperarmos o estrago que fizemos é zerar o desmatamento. Mas isso será insuficiente, temos que replantar florestas, refazer ecossistemas. É a nossa grande oportunidade.

E se não fizermos isso?

Veja pela janela o céu que tem em São Paulo – é de deserto. A destruição da Mata Atlântica nos deu a ilusão de que estava tudo bem, e o mesmo com a destruição da Amazônia. Mas isso é até o dia em que se rompe a capacidade de compensação, e é esse nível que estamos atingindo hoje em relação aos serviços ambientais. É muito sério, muito grave. Estamos indo direto para o matadouro.

O que o sr. está dizendo?

Agora temos que nos confrontar com o desmatamento acumulado. Não adianta mais dizer “vamos reduzir a taxa de desmatamento anual.” Temos que fazer frente ao passivo, é ele que determina o clima.

Tem quem diga que parte desses campos de futebol viraram campos de soja.

O clima não dá a mínima para a soja, para o clima importa a árvore. Soja tem raiz de pouca profundidade, não tem dossel, tem raiz curta, não é capaz de bombear água. Os sistemas agrícolas são extremamente dependentes da floresta. Se não chegar chuva ali, a plantação morre.

O que significa tudo isso? Que vai chover cada vez menos?

Significa que todos aqueles serviços ambientais estão sendo dilapidados. É a mesma coisa que arrebentar turbinas na usina de Itaipu – aí não tem mais eletricidade. É de clima que estamos falando, da umidade que vem da Amazônia. É essa a dimensão dos serviços que estamos perdendo. Estamos perdendo um serviço que era gratuito que trazia conforto, que fornecia água doce e estabilidade climática. Um estudo feito na Geórgia por uma associação do agronegócio com ONGs ambientalistas mediu os serviços de florestas privadas para áreas urbanas. Encontraram um valor de US$ 37 bilhões. É disso que estamos falando, de uma usina de serviços.

As pessoas em São Paulo estão preocupadas com a seca.

Sim, mas quantos paulistas compraram móveis e construíram casas com madeira da Amazônia e nem perguntaram sobre a procedência? Não estou responsabilizando os paulistas porque existe muita inconsciência sobre a questão. Mas o papel da ciência é trazer o conhecimento. Estamos chegando a um ponto crítico e temos que avisar.

Esse ponto crítico é ficar sem água?

Entre outras coisas. Estamos fazendo a transposição do São Francisco para resolver o problema de uma área onde não chove há três anos. Mas e se não tiver água em outros lugares? E se ocorrer de a gente destruir e desmatar de tal forma que a região que produz 70% do PIB cumpra o seu destino geográfico e vire deserto? Vamos buscar água no aquífero?

Não é uma opção?

No norte de Pequim, os poços estão já a dois quilômetros de profundidade. Não tem uso indefinido de uma água fóssil, ela tem que ter algum tipo de recarga. É um estoque, como petróleo. Usa e acaba. Só tem um lugar que não acaba, o oceano, mas é salgado.
O esforço de guerra é para acabar com o desmatamento?

Tinha que ter acabado ontem, tem que acabar hoje e temos que começar a replantar florestas. Esse é o esforço de guerra. Temos nas florestas nosso maior aliado. São uma tecnologia natural que está ao nosso alcance. Não proponho tirar as plantações de soja ou a criação de gado para plantar floresta, mas fazer o uso inteligente da paisagem, recompor as Áreas de Proteção Permanente (APPs) e replantar florestas em grande escala. Não só na Amazônia. Aqui em São Paulo, se tivesse floresta, o que eu chamo de paquiderme atmosférico…

Como é?

É a massa de ar quente que “sentou” no Sudeste e não deixa entrar nem a frente fria pelo Sul nem os rios voadores da Amazônia.

O que o governo do Estado deveria fazer?

Programas massivos de replantio de reflorestas. Já. São Paulo tem que erradicar totalmente a tolerância com relação a desmatamento. Segunda coisa: ter um esforço de guerra no replantio de florestas. Não é replantar eucalipto. Monocultura de eucalipto não tem este papel em relação a ciclo hidrológico, tem que replantar floresta e acabar com o fogo. Poderia começar reconstruindo ecossistemas em áreas degradadas para não competir com a agricultura.

Onde?

Nos morros pelados onde tem capim, nos vales, em áreas íngremes. Em vales onde só tem capim, tem que plantar árvores da Mata Atlântica. O esforço de guerra para replantar tem que juntar toda a sociedade. Precisamos reconstruir as florestas, da melhor e mais rápida forma possível.

E o desmatamento legal?

Nem pode entrar em cogitação. Uma lei que não levou em consideração a ciência e prejudica a sociedade, que tira água das torneiras, precisa ser mudada.

O que achou de Dilma não ter assinado o compromisso de desmatamento zero em 2030, na reunião da ONU, em Nova York?
Um absurdo sem paralelo. A realidade é que estamos indo para o caos. Já temos carros-pipa na zona metropolitana de São Paulo. Estamos perdendo bilhões de dólares em valores que foram destruídos. Quem é o responsável por isso? Um dia, quando a sociedade se der conta, a Justiça vai receber acusações. Imagine se as grandes áreas urbanas, que ficarem em penúria hídrica, responsabilizarem os grandes lordes do agronegócio pelo desmatamento da Amazônia. Espero que não se chegue a essa situação. Mas a realidade é que a torneira da sua casa está secando.

Quanto a floresta consegue suportar?

Temos uma floresta de mais de 50 milhões de anos. Nesse período é improvável que não tenham acontecido cataclismas, glaciação e aquecimento, e no entanto a Amazônia e a Mata Atlântica ficaram aí. Quando a floresta está intacta, tem capacidade de suportar. É a mesma capacidade do fígado do alcoólatra que, mesmo tomando vários porres, não acontece nada se está intacto. Mas o desmatamento faz com que a capacidade de resiliência que tínhamos, com a floresta, fique perdida.

Aí vem uma flutuação forte ligado à mudança climática global e nós ficamos muito expostos, como é o caso do “paquiderme atmosférico” que sentou no Sudeste. Se tivesse floresta aqui, não aconteceria, porque a floresta resfria a superfície e evapora quantidade de água que ajuda a formar chuva.

O esforço terá resultado?

Isso não é garantido, porque existem as mudanças climáticas globais, mas reconstruir ecossistemas é a melhor opção que temos. Quem sabe a gente desenvolva outra agricultura, mais harmônica, de serviços agroecossistêmicos. Não tem nenhuma razão para o antagonismo entre agricultura e conservação ambiental. Ao contrário. A agricultura consciente, que soubesse o que a comunidade científica sabe, estaria na rua, com cartazes, exigindo do governo proteção das florestas. E, por iniciativa própria, replantaria a floresta nas suas propriedades.

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10/11/2014 – 01h16

Alerta: desmatamento na Amazônia tende a crescer (WWF Brasil)

por Redação do WWF Brasil

amazonia desmatamento peter 1 Alerta: desmatamento na Amazônia tende a crescer

O mais recente relatório divulgado, na última semana, pelo Painel Intergovernamental sobre Mudanças Climáticas da ONU (IPCC, na sigla em inglês) alertou: o planeta precisa de mudanças, caso contrário os danos ambientais e climáticos poderão ser irreversíveis. No Brasil, a situação não é diferente. Muito há que ser mudado, principalmente, no que se refere à conservação da maior floresta tropical do mundo, a Amazônia. Pelo fato de desempenhar um papel essencial no combate aos efeitos das mudanças climáticas, pesquisas recentes associam a destruição das florestas no norte do País às graves consequências para o clima, devido à sua função na estocagem do carbono e na regulação do regime das chuvas, que abastecem, por exemplo, as regiões Sudeste e Sul.

Apesar do alerta e da necessidade de mudança, o Brasil tem caminhado no sentido contrário, principalmente, no que diz respeito ao desmatamento da Amazônia. Antes mesmo da divulgação das estimativas oficiais de desmatamento em 2014, prevista para as próximas semanas, os números do sistema de Detecção do Desmatamento em Tempo Real (Deter) apontam uma tendência de crescimento no norte do País.

Segundo o sistema, baseado em estimativas a partir de imagens de satélites e destinado a orientar a fiscalização em campo, nos últimos três anos (2012, 2013 e 2014), houve um aumento de cerca de 49% nas taxas correspondentes entre agosto de um ano a julho do ano seguinte. Na comparação de 2013 a 2014, considerando apenas os meses do início da estação seca na Amazônia (maio-julho), os quais concentram boa parte do desmatamento anual, o valor dobrou, passando de 893 km2 para 1535 km2 (veja gráfico abaixo).

grafico desmatamento 1 Alerta: desmatamento na Amazônia tende a crescer

O sistema Deter é um dos sistemas de monitoramento criado pelo governo para apontar alertas de desmatamento e demonstrar suas tendências. Por esta razão, serve também para estimar o que deve acontecer com os dados oficiais de referência para o monitoramento do desmatamento, por meio de um segundo sistema mais acurado. Este segundo sistema é o que gera os dados a serem divulgados nas próximas semanas, que terão por base os valores levantados pelo Programa de Cálculo do Desflorestamento da Amazônia (Prodes), do Instituto Nacional de Pesquisas Espaciais (Inpe), que registra, via satélite, áreas equivalentes a pouco mais de seis campos de futebol (6,25 hectares). Esta estimativa é divulgada sempre no final do ano, geralmente no mês de novembro. Em meados de julho do ano seguinte, as taxas são consolidadas oficialmente, após o detalhamento dos estudos. Entretanto, as estimativas de novembro contém uma imprecisão muito pequena em relação aos dados definitivos que serão divulgados no ano que vem.

“As taxas de desmatamento da Amazônia, consideradas como oficiais pelo governo brasileiro, são as do Prodes, que trabalha com imagens de melhor resolução espacial, capazes de mostrar também os pequenos desmatamentos. No entanto, os números apontados pelo Deter são importantes indicadores para os órgãos de controle e fiscalização e para nos mostrar a tendência que vem por aí”, explica Mauro Armelin, superintendente de conservação do WWF-Brasil. O Prodes, em seu último levantamento, já havia registrado um aumento em relação ao ano anterior de 29% nas taxas de desmatamento para o período de agosto de 2012 a julho de 2013, em que 5.891 km² de floresta amazônica foram perdidos. “Existe a tendência do Prodes acompanhar a tendência do Deter, ou seja, haver aumento do desmatamento registrado oficialmente em 2014. É claro que esperamos boas notícias, ou seja, que estejamos errados em nossa análise, e que as novas taxas do Prodes mostrem o recuo do desmatamento. Mas a tendência é justamente a contrária”, conclui.

Segundo Armelin, o Brasil corre o risco de fechar o ano com a pior performance ambiental dos últimos anos. “Estamos numa situação complicada. Ao mesmo tempo que o desmatamento tende a crescer, também não avançamos em alternativas energéticas de baixo carbono. Para piorar, os incentivos do governo têm aumentado para a expansão automobilística, com um forte incentivo a combustíveis fósseis, com cada vez mais subsídios para a gasolina, por exemplo”, avalia Armelin. Tais investimentos não contribuem em nada com as metas divulgadas pelo relatório do IPCC. O documento sugere que o uso, sem restrições de combustíveis fósseis (carvão, petróleo, gás), seja suspenso até o ano de 2100 e que o uso de alternativas renováveis suba até 70% até 2050. “Acreditamos que para contribuir com essas recomendações, o Brasil precisa ter um melhor planejamento energético que considere fontes de energia de menor impacto, como solar, eólica, baseada em biomassa e em pequenas centrais hidrelétricas, as PCHs”, explica Mauro.

Sem estes investimentos, continuaremos a ir na direção contrária ao desenvolvimento sustentável. “Precisamos finalmente entender, como sociedade, que as escolhas que fizermos agora irão refletir na qualidade de vida das futuras gerações. Eventos climáticos extremos, como a escassez de chuvas no sudeste que está ocorrendo agora, serão fenômenos que se tornarão mais comuns enquanto a temperatura do planeta continuar a crescer. A Amazônia é um ativo chave para a proteção da segurança climática, hídrica e energética, não só da população brasileira, mas também mundial”, alerta Armelin.

Alternativas

O atual cenário da Amazônia clama por uma intervenção urgente. O governo precisa agir rapidamente para evitar que o desmatamento fuja do controle e aumente os riscos para a região em termos da perda de sua biodiversidade e da depreciação de seu capital natural, com fortes impactos sobre sua população. “É preciso avançar em ações estruturantes, como a implementação em larga escala do Cadastro Ambiental Rural, de iniciativas de restauração florestal dentro das propriedades privadas, de forma a assegurar cumprimento da lei ambiental, e de ações de ordenamento e de planejamento do uso do solo”, ressalta Marco Lentini, coordenador do Programa Amazônia do WWF-Brasil.

Além disso, segundo o especialista, é preciso implementar de forma mais eficiente ações que levem ao bom uso e à valorização de florestas, principalmente em iniciativas de manejo florestal, e que apresentem alternativas econômicas contra o desmatamento. Um exemplo seria o desenvolvimento de um amplo sistema para o Pagamento por Serviços Ambientais (PSA) como carbono, água e biodiversidade. “A floresta amazônica, além de proporcionar serviços imensuráveis em termos de regulação do clima e do regime de chuvas, oferece uma ampla gama de produtos que podem ser aproveitados de forma racional pela sociedade. Ou seja, podemos aliar conservação e desenvolvimento. Nossa sociedade tem investido em modelos que priorizam ou um objetivo, ou o outro. É chegado o momento de sairmos desta paralisia de paradigma”, avalia Lentini.

* Publicado originalmente no site WWF Brasil.

(WWF Brasil)

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10/11/2014 – 01h08

Destamento: Má notícia pode virar pesadelo (Greenpeace)

por Redação do Greenpeace

desmatamento1 Destamento: Má notícia pode virar pesadelo

Últimos dados do sistema de alerta Deter apontam tendência de crescimento do desmatamento da Amazônia.

O que foi má notícia no ano passado se anuncia antecipadamente como pesadelo para 2015: depois de vários anos de queda, o aumento no desmatamento da Amazônia pode se confirmar como tendência em 2014 (assim que a taxa oficial anual da derrubada de árvores na região para este ano for divulgada) e como grande desafio em 2015. Segundo a Folha de S.Paulo, em nota divulgada em seu site, sexta-feira, dia 7, os alertas de desmatamento na região aumentaram 122% em agosto e setembro passados, comparados com o mesmo período do ano anterior. Dados do Deter, diz a Folha, mostram alertas de desmatamentos num total de 1.626 km² de florestas nesses dois meses.

Agosto e setembro são os dois primeiros meses que comporão a taxa oficial de desmatamento em 2015. Por razões técnicas, o INPE (Instituto Nacional de Pesquisas Espaciais) monitora desmatamento entre agosto de um ano e julho do próximo, – o chamado “ano fiscal do desmatamento”. Os alertas são baseados em imagens de satélite que permitem análise rápida por serem mais leves, dada a baixa resolução das imagens, e compõem o Deter – o sistema de monitoramento em tempo real passado ao Ibama para auxiliar no combate a ilegalidades na floresta. Sendo assim, os meses de agosto e setembro de 2014 comporão os dois primeiros do “ano fiscal” de 2015.

Apesar de o sistema Deter ter um grau de imprecisão na medição, o crescimento nesses dois primeiros meses de apuração da taxa de desmatamento a ser considerada em 2015 é motivo para séria preocupação, explica Paulo Adario, estrategista sênior do Greenpeace para florestas. “O aumento dos números do Deter apontado pela Folha confirma uma tendência já apontada pelos dados da ONG Imazon e acende a luz vermelha. O dragão do desmatamento acordou.”

“Essa é uma má notícia para o governo, que vinha se beneficiando da imagem positiva criada pela queda no desmatamento, e para todos nós. O desmatamento da Amazônia é a principal contribuição do Brasil para a mudança climática. A floresta perde cada vez mais cobertura e nós sentimos a consequência dessa destruição para muito além das fronteiras da Amazônia, como na forte estiagem que seca as torneiras no Sudeste.”

* Publicado originalmente no site Greenpeace.

(Greenpeace)

Projeto da biodiversidade vai à comissão geral com polêmicas em aberto (Agência Câmara)

JC 5061, 7 de novembro de 2014

Agronegócio não aceita fiscalização pelo Ibama. Agricultura familiar quer receber pelo cultivo de sementes crioulas. Cientistas criticam regras sobre royalties

A comissão geral que vai discutir na próxima terça-feira as novas regras para exploração do patrimônio genético da biodiversidade brasileira (PL 7735/14) terá o desafio de buscar uma solução para vários impasses que ainda persistem na negociação do texto. Deputados ambientalistas, ligados ao agronegócio e à pesquisa científica continuarão em rodadas de negociação até a terça-feira na busca do projeto mais consensual.

Parte das polêmicas são demandas dos deputados ligados ao agronegócio, que conseguiram incluir as pesquisas da agropecuária no texto substitutivo. A proposta enviada pelo governo excluía a agricultura, que continuaria sendo regulamentada pela Medida Provisória 2.186-16/01. Agora, o texto em discussão já inclui a pesquisa com produção de sementes e melhoramento de raças e revoga de vez a MP de 2001.

O governo já realizou várias reuniões entre parlamentares e técnicos do governo. Até o momento, foram apresentadas três versões diferentes de relatórios.

Fiscalização
O deputado Alceu Moreira (PMDB-RS), que está à frente das negociações, defende que o Ministério da Agricultura seja o responsável pela fiscalização das pesquisas para produção de novas sementes e novas raças. Já o governo quer repassar essa atribuição ao Instituto Brasileiro do Meio Ambiente e dos Recursos Naturais Renováveis (Ibama). Esse item deverá ser decidido no voto.

“Não vamos permitir que o Ibama, que tem um distanciamento longo da cadeia produtiva, seja o responsável pela fiscalização das pesquisas com agricultura, pecuária e florestas. Terá de ser o Ministério da Agricultura”, afirmou o deputado.

Royalties
O agronegócio também conseguiu incluir no texto tratamento diferenciado para pesquisas com sementes e raças. O pagamento de repartição de benefícios – uma espécie de cobrança deroyalties – só será aplicado para espécies nativas brasileiras. Ficam de fora da cobrança pesquisa com espécies de outros países que são o foco do agronegócio: soja, cana-de açúcar, café.

E quando houver cobrança de royalties, isso incidirá apenas sobre o material reprodutivo – sementes, talos, animais reprodutores ou sêmen – excluindo a cobrança sobre o produto final. “Não pode ter cobrança na origem, que é a semente, e depois outra cobrança no produto final. Se vai ter no produto final, não pode ter na pesquisa”, disse Alceu.

A limitação do pagamento de royalties na agricultura desagradou integrantes da agricultura familiar, que cobram acesso e remuneração pelo cultivo de sementes crioulas, aquelas em que não há alteração genética.

Conselho paritário
Outra demanda do agronegócio é uma composição paritária do Conselho de Gestão do Patrimônio Genético (Cgen) entre representantes do governo federal, da indústria, da academia e da sociedade civil. A intenção é dar mais voz ao agronegócio nesse conselho, que hoje tem apenas representantes do Ministério da Agricultura e da Embrapa.

Cientistas
Já a comunidade científica, segundo a deputada Luciana Santos (PCdoB-PE), que também tem conduzido as negociações, critica o percentual baixo de royalties que será cobrado do fabricante de produto final oriundo de pesquisa com biodiversidade.

O texto prevê o pagamento de 1% da receita líquida anual com o produto, mas esse valor poderá ser reduzido até 0,1%. Também prevê isenção para microempresas, empresas de pequeno porte e microempreendedores individuais.

Os cientistas discordam, ainda, do fato de o projeto escolher apenas a última etapa da cadeia para a cobrança da repartição de benefícios. “Eles acham que é injusto e precisa ser considerado a repartição de benefícios de etapas do processo porque, às vezes, ao final não se comercializa apenas um produto acabado, mas um intermediário”, disse.

Ambientalistas
Os ambientalistas também não decidiram se apoiarão ou não o texto. A decisão será tomada na semana que vem, mas o líder do partido, deputado Sarney Filho (MA), saiu da reunião da última terça-feira (4) insatisfeito com o texto apresentado.

O líder do governo, deputado Henrique Fontana (PT-RS), disse que a intenção é chegar a um texto de consenso após a comissão geral e colocar o tema em votação na quarta-feira (12). Luciana Santos admitiu que, por mais que os deputados tentem chegar a um acordo, vários dispositivos só serão decididos no voto.

Íntegra da proposta:

(Agência Câmara) 

http://www2.camara.leg.br/camaranoticias/noticias/POLITICA/477144-PROJETO-DA-BIODIVERSIDADE-VAI-A-COMISSAO-GERAL-COM-VARIAS-POLEMICAS-EM-ABERTO.html

What Happened On Easter Island — A New (Even Scarier) Scenario (NPR)

December 10, 2013 8:41 AM ET

We all know the story, or think we do.

Let me tell it the old way, then the new way. See which worries you most.

Island filled with trees

Robert Krulwich/NPR

First version: Easter Island is a small 63-square-mile patch of land — more than a thousand miles from the next inhabited spot in the Pacific Ocean. In A.D. 1200 (or thereabouts), a small group of Polynesians — it might have been a single family — made their way there, settled in and began to farm. When they arrived, the place was covered with trees — as many as 16 million of them, some towering 100 feet high.

These settlers were farmers, practicing slash-and-burn agriculture, so they burned down woods, opened spaces, and began to multiply. Pretty soon the island had too many people, too few trees, and then, in only a few generations, no trees at all.

Island without trees

Robert Krulwich/NPR

As Jared Diamond tells it in his best-selling book, Collapse, Easter Island is the “clearest example of a society that destroyed itself by overexploiting its own resources.” Once tree clearing started, it didn’t stop until the whole forest was gone. Diamond called this self-destructive behavior “ecocide” and warned that Easter Island’s fate could one day be our own.

When Captain James Cook visited there in 1774, his crew counted roughly 700 islanders (from an earlier population of thousands), living marginal lives, their canoes reduced to patched fragments of driftwood.

And that has become the lesson of Easter Island — that we don’t dare abuse the plants and animals around us, because if we do, we will, all of us, go down together.

Easter Island Statues

Robert Krulwich/NPR

And yet, puzzlingly, these same people had managed to carve enormous statues — almost a thousand of them, with giant, hollow-eyed, gaunt faces, some weighing 75 tons. The statues faced not outward, not to the sea, but inward, toward the now empty, denuded landscape. When Captain Cook saw them, many of these “moai” had been toppled and lay face down, in abject defeat.

OK, that’s the story we all know, the Collapse story. The new one is very different.

A Story Of Success?

It comes from two anthropologists, Terry Hunt and Carl Lipo, from the University of Hawaii. They say, “Rather than a case of abject failure,” what happened to the people on Easter Island “is an unlikely story of success.”

Success? How could anyone call what happened on Easter Island a “success?”

Well, I’ve taken a look at their book, The Statues That Walked, and oddly enough they’ve got a case, although I’ll say in advance what they call “success” strikes me as just as scary — maybe scarier.

Here’s their argument: Professors Hunt and Lipo say fossil hunters and paleobotanists have found no hard evidence that the first Polynesian settlers set fire to the forest to clear land — what’s called “large scale prehistoric farming.” The trees did die, no question. But instead of fire, Hunt and Lipo blame rats.

Rat next to fallen trees

Robert Krulwich/NPR

Polynesian rats (Rattus exulans) stowed away on those canoes, Hunt and Lipo say, and once they landed, with no enemies and lots of palm roots to eat, they went on a binge, eating and destroying tree after tree, and multiplying at a furious rate. As a reviewer in The Wall Street Journal reported,

In laboratory settings, Polynesian rat populations can double in 47 days. Throw a breeding pair into an island with no predators and abundant food and arithmetic suggests the result … If the animals multiplied as they did in Hawaii, the authors calculate, [Easter Island] would quickly have housed between two and three million. Among the favorite food sources of R. exulans are tree seeds and tree sprouts. Humans surely cleared some of the forest, but the real damage would have come from the rats that prevented new growth.

As the trees went, so did 20 other forest plants, six land birds and several sea birds. So there was definitely less choice in food, a much narrower diet, and yet people continued to live on Easter Island, and food, it seems, was not their big problem.

Rat Meat, Anybody?

For one thing, they could eat rats. As J.B. MacKinnon reports in his new book, The Once and Future World, archeologists examined ancient garbage heaps on Easter Island looking for discarded bones and found “that 60 percent of the bones came from introduced rats.”

So they’d found a meat substitute.

Man with rat on a plate

Robert Krulwich/NPR

What’s more, though the island hadn’t much water and its soil wasn’t rich, the islanders took stones, broke them into bits, and scattered them onto open fields creating an uneven surface. When wind blew in off the sea, the bumpy rocks produced more turbulent airflow, “releasing mineral nutrients in the rock,” J.B. MacKinnon says, which gave the soil just enough of a nutrient boost to support basic vegetables. One tenth of the island had these scattered rock “gardens,” and they produced enough food, “to sustain a population density similar to places like Oklahoma, Colorado, Sweden and New Zealand today.”

According to MacKinnon, scientists say that Easter Island skeletons from that time show “less malnutrition than people in Europe.” When a Dutch explorer, Jacob Roggevin, happened by in 1722, he wrote that islanders didn’t ask for food. They wanted European hats instead. And, of course, starving folks typically don’t have the time or energy to carve and shove 70-ton statues around their island.

A ‘Success’ Story?

Why is this a success story?

Because, say the Hawaiian anthropologists, clans and families on Easter Island didn’t fall apart. It’s true, the island became desolate, emptier. The ecosystem was severely compromised. And yet, say the anthropologists, Easter Islanders didn’t disappear. They adjusted. They had no lumber to build canoes to go deep-sea fishing. They had fewer birds to hunt. They didn’t have coconuts. But they kept going on rat meat and small helpings of vegetables. They made do.

Cooked rat meal

Robert Krulwich/NPR

One niggling question: If everybody was eating enough, why did the population decline? Probably, the professors say, from sexually transmitted diseases after Europeans came visiting.

OK, maybe there was no “ecocide.” But is this good news? Should we celebrate?

I wonder. What we have here are two scenarios ostensibly about Easter Island’s past, but really about what might be our planet’s future. The first scenario — an ecological collapse — nobody wants that. But let’s think about this new alternative — where humans degrade their environment but somehow “muddle through.” Is that better? In some ways, I think this “success” story is just as scary.

The Danger Of ‘Success’

What if the planet’s ecosystem, as J.B. MacKinnon puts it, “is reduced to a ruin, yet its people endure, worshipping their gods and coveting status objects while surviving on some futuristic equivalent of the Easter Islanders’ rat meat and rock gardens?”

Humans are a very adaptable species. We’ve seen people grow used to slums, adjust to concentration camps, learn to live with what fate hands them. If our future is to continuously degrade our planet, lose plant after plant, animal after animal, forgetting what we once enjoyed, adjusting to lesser circumstances, never shouting, “That’s It!” — always making do, I wouldn’t call that “success.”

The Lesson? Remember Tang, The Breakfast Drink

People can’t remember what their great-grandparents saw, ate and loved about the world. They only know what they know. To prevent an ecological crisis, we must become alarmed. That’s when we’ll act. The new Easter Island story suggests that humans may never hit the alarm.

It’s like the story people used to tell about Tang, a sad, flat synthetic orange juice popularized by NASA. If you know what real orange juice tastes like, Tang is no achievement. But if you are on a 50-year voyage, if you lose the memory of real orange juice, then gradually, you begin to think Tang is delicious.

On Easter Island, people learned to live with less and forgot what it was like to have more. Maybe that will happen to us. There’s a lesson here. It’s not a happy one.

As MacKinnon puts it: “If you’re waiting for an ecological crisis to persuade human beings to change their troubled relationship with nature — you could be waiting a long, long time.”

“Pensar o mundo em que vivemos sem dissociar a história da Terra da história da humanidade” (ICICT Notícias)

Por Graça Portela

29/10/2014

Com respostas bastante reflexivas, o pesquisador Carlos Saldanha, autor do livro “Desenvolvimento Sustentável para o Antropoceno”, responde a entrevista do site do Icict, falando de suas expectativas em relação à sua obra, suas análises e compreensão de que estamos em um momento único na história da humanidade e que é sim o momento de agirmos pelo meio ambiente. Sem medos.

O que o senhor espera com o lançamento de um livro que toca em um aspecto ainda pouco discutido no Brasil, que é o conceito do Antropoceno?

Escrevi esse livro pensando nos jovens estudantes. A juventude vem assumindo, desde meados dos anos 1960, relevante papel na vida política mundial. As ações dos jovens, que instituem formas novas de movimentos sociais e de protestos, não obedecem à lógica dos partidos políticos, sindicatos ou associações atreladas às tradicionais estruturas políticas de poder. Com este livro, espero contribuir para a ampliação dos mapas cognitivos e o reforço da potencialidade de transformação desse ator social extremamente relevante para a transformação da vida social. Nesses primeiros 14 anos do século XXI, nós pouco fizemos em relação ao enfrentamento da crise política que paira sobre nós, principalmente no que se refere à necessidade de aprimoramento do processo de democratização da sociedade brasileira, hoje carente de espaços públicos, fóruns e arenas de interlocução entre governantes e cidadãos. Eu diria que se a vida política tem uma ecologia, os jovens são, então, a fonte geradora de sua renovação, acredito que a democracia não é façanha indivíduos solitários, mas de um concerto a várias vozes, de uma polifonia na Era em que vivemos, o Antropoceno.

O mérito desse operador conceitual é o de permitir pensar o mundo em que vivemos sem dissociar a história da Terra da história da humanidade, consequentemente, reconhecer o papel do Homem como força motriz de processos de transformação dos sistemas que sustentam a vida na Terra. Atualmente, é quase um consenso que a Era do Antropoceno foi inaugurada com a Revolução Industrial na Inglaterra, em fins do século XVIII, por ocasião do funcionamento das primeiras máquinas a vapor. Algumas entidades internacionais das áreas das Ciências da Terra estão discutindo quando teria, de fato, começado o Antropoceno. Aliás, é interessante observar que já existe uma previsão de anúncio oficial, em 2016, desse entendimento compartilhado. Se eu tivesse que resumir, sintetizar, as características do Antropoceno, presentes em maior ou menor grau nas sociedades contemporâneas, diria que elas consistem, entre outras importantes determinações, numa Era de transformações climáticas naturais e destruição de ambientes naturais.  Podemos lembrar aqui que o aumento do consumo de combustíveis fósseis, a contaminação dos solos por hidrocarbonetos, a emissão de gases de efeito estufa, o desmatamento e o crescimento das áreas de produção agrícola com uso intenso de fertilizantes e agrotóxicos são apenas alguns exemplos de como a interferência do Homem no ambiente alterou a vida no Planeta. Todas essas transformações são vistas como constitutivas da nossa sociedade, com graus variados, é verdade, de manifestações no ”continente” brasileiro, mas, ao mesmo tempo, questões essenciais que mobilizam cada vez mais os jovens.

Por conta de tais características, o livro não se propõe a percorrer todos os meandros do Antropoceno. Eu quis apresentar um olhar panorâmico, afinal, seria impossível dar conta, empiricamente, de todas as questões que concernem o debate atual sobre as relações entre o homem, a natureza e a sociedade. Neste livro, eu me debrucei prioritariamente sobre os problemas e as soluções jurídicas, com o Direito se formando e se transformando em ações concretas dos homens que fazem, refazem e desfazem, com seu comportamento, as regras de conduta que nos governam. Tais questões se referem, no caso específico do trabalho de pesquisa que eu desenvolvo, aos problemas ambientais enfrentados pela sociedade brasileira.

No livro há uma visão ao mesmo tempo otimista, mas que nos leva a sermos mais responsáveis com o que estamos fazendo com o planeta. O senhor acredita que, de fato, o homem pode tentar reverter os problemas que estão sendo causados pelo próprio homem no meio ambiente?

Sim. Não é preciso ser um especialista para se dar conta de que a história humana é contingente. Portanto, não deve ser pensada como um processo no sentido de sucessão temporal, um conceito da Era do Antropoceno que usa o princípio da causalidade, típico das ciências naturais, como seu pressuposto. A história, ainda que fraturada, caótica, pode ser retomada em termos novos para que possamos nos apropriar do sentido. Um sentido que nós podemos assumir com prudência posto que é contingente. Nessa perspectiva, é preciso ater-se aos acontecimentos e aos momentos de ruptura que nos permitem compreender o que é consumado e um novo tempo que se inaugura.

Nessa linha de raciocínio, eu diria que não obstante as características do Antropoceno sintetizadas na pergunta anterior, características emblemáticas e dramáticas dos tempos que se convencionou chamar de modernos, se, por um lado, a submissão a certas condições é o modo pelo qual uma certa existência humana é possível, por outro lado, está sempre ao alcance do homem a liberação dessa sujeição mediante o acesso a uma outra forma de existência expressa através do conceito de desenvolvimento sustentável. Desse modo, a força compulsória de certas condições encontra sempre limites, aqueles da existência específica à qual se relacionam. A presente condição humana é, por exemplo, necessária e inelutável no planeta Terra, mas não o seria em um outro ponto do universo. Ou seja, o homem nunca é inteiramente condicionável, porque é permanentemente capaz de múltiplas formas de existência, isto é, capaz da transcendência das próprias modalidades da existência terrena na teia da vida de um único planeta, inter-relacionado e interdependente, com montanhas vertiginosas, cordilheiras imponentes, vales profundos, ilhas oceânicas, desertos extensos, planícies encharcadas, savanas, geleiras e tundras espaçosas, vulcões adormecidos e furiosos, florestas majestosas e cidades densamente povoadas com veículos automotores e homens dependentes de recursos naturais e de energias externas. Não obstante, no Século XX, tanto as duas grandes ideologias, a liberal quanto a socialista, não souberam lidar com, e nem mesmo contemplaram no seu projeto político, a degradação ambiental em processos industriais, com a geração de fumaça, resíduos sólidos e efluentes líquidos no solo e nos corpos hídricos; muito pelo contrário, ambos, o capitalismo industrialista e o coletivismo industrialista, colocaram em operação um modelo industrial agressivo aos valores ambientais de vida em sociedade. Portanto, a disposição de mudar de ideia e recomeçar oferece aos seres humanos uma condição de liberdade para estabelecer novas relações e novos começos.

Eu acredito que na dinâmica relacional Homem-Terra, o presente só vislumbra a esperança quando voltado para o futuro. Ou seja, a busca da transcendência dos custos ambientais gerados pelo desenvolvimento industrial das sociedades humanas – um traço comum que transcende as particularidades culturais e, portanto, refletem a condição humana – tem sido uma preocupação desde o século XIX, mas, somente a partir do final dos anos 60 do século passado até o presente, que problemas ambientais transnacionais passaram a fazer parte da agenda política dos países à luz dos conhecimentos científicos produzidos, com o reconhecimento de que o ambiente – ar, água, solo, subsolo, flora, fauna, pessoas, espaço sideral e suas inter-relações – é frágil e precisa de proteção legal especial, com justiça social traduzida em estruturas administrativas que promovam o desenvolvimento sustentável, formando um conjunto de instrumentos da ação pública assentado na legislação ambiental e nas práticas jurídicas específicas ao processo de formação de cada sociedade.

Como está o Brasil hoje em termos de política ambiental? Muitos alegam que, por sermos um país emergente, essa deva ser uma preocupação secundária. Qual a sua opinião sobre isso?

Em relação a primeira parte da pergunta, eu diria que no Brasil, até o final dos anos 1980, havia apenas preocupações pontuais com o meio ambiente, objetivando a sua conservação e não a sua preservação. As ações estatais estiveram organizadas, primordialmente, para assegurar a integridade física do território, em detrimento da integração social. A proteção jurídica do meio ambiente, explorado de forma desregrada era solucionada por intermédio do Código Civil, de influência nitidamente liberal, atualizado somente 86 anos depois de sua entrada em vigor, em 2002. Por mais de um século e meio, o legislador nacional procurou proteger categorias mais amplas de recursos naturais, limitando simplesmente a sua exploração desordenada. Protegia-se o todo a partir das partes e, de forma fragmentada, tutelava-se somente aquilo que tivesse interesse econômico. Havia, portanto, um conjunto de leis vagas e dispersas, estabelecidas em diversos níveis jurídico-administrativos, que regulavam atividades específicas. No país, as leis não tinham caráter ambiental, pois haviam sido concebidas e eram implementadas no contexto de um modelo de desenvolvimento e de um arcabouço legal que ignorava a questão ambiental, pelo menos nos termos em que já se colocava internacionalmente os problemas de conservação e proteção da natureza. Até 1972, por ocasião da Conferência de Estocolmo, o Brasil defendia a tese de que o principal sujeito da proteção ambiental era o ser humano, já que a “poluição da pobreza” (falta de saneamento básico e de cuidados com a saúde pública, a alimentação e a higiene) e a “poluição da riqueza” (industrial) possuíam um efeito muito mais avassalador do que os danos ao meio ambiente decorrentes do crescimento econômico. Entre os anos 1970 e 1980, os instrumentos legais variavam de estado para estado da federação no que se refere ao controle da poluição ambiental, leis federais específicas se destinavam tão somente a controlar a propriedade e o uso dos recursos naturais por meio do disciplinamento das atividades agroindustriais.

A proteção jurídica integral ao meio ambiente no país só veio a ocorrer a partir de 1981, com a institucionalização da Política Nacional do Meio Ambiente (lei nº 6.938). Os recursos ambientais passaram a abranger “a atmosfera, as águas interiores, superficiais e subterrâneas, os estuários, o mar territorial, o solo, o subsolo, os elementos da biosfera, a fauna e a flora” (lei nº 6.938/1981, artigo 3º, V, com redação dada pela lei nº 7.804/1989). O arranjo institucional previsto para lidar com as questões ambientais foi, então, pensado como um Sistema Nacional de Meio Ambiente (Sisnama), evidenciando a lógica federativa, especialmente por meio da divisão de responsabilidades (órgãos central, seccionais e locais). É interessante observar que, com base em uma concepção de sistema ecológico integrado, essa proteção passou a ocorrer de forma holística. Até esse momento, o desenvolvimento internacional dessa concepção, que vinha desde o final dos anos 1960, objetivava a proteção das partes a partir do todo, enfatizando o relacionamento entre os seres humanos e seus ambientes, bem como os aspectos de ordem teórica e normativa no compromisso com a sociedade por meio de uma relação diferente, responsável e harmoniosa. A partir dos anos 1980 é que se pode dizer que a questão ambiental (ecológica e socioambiental) emergiu efetivamente no interior do Estado brasileiro – ao mesmo tempo que a democracia se afirmava no imaginário da sociedade, na sua luta coletiva e no conjunto dos movimentos sociais –, quando um pensamento jurídico ambiental foi constituído no país.

Em relação à segunda parte da pergunta, eu diria que faz parte do processo de aprimoramento institucional brasileiro a luta para pôr em prática o modelo de desenvolvimento nacional, definido constitucionalmente como sustentável. É um desafio enorme reformar a atual versão do septuagenário modelo desenvolvimentista brasileiro. Em suas várias versões, uma coisa não mudou, ele continua a se basear no uso intensivo de combustíveis fósseis, dependente da exportação de produtos primários, as chamadas commodities, além de estar assentado em um modo de exploração dos recursos naturais que leva à destruição de extensas áreas dos biomas brasileiros. Tampouco, não podemos deixar de mencionar aqui a questão das dificuldades para demarcação das terras indígenas, ou ainda da não realização da reforma agrária.

Deveríamos discutir os ”fins” para os quais nos apropriamos da matéria e da energia disponíveis na porção de Terra onde vivemos. Como membros de uma coletividade territorial e juridicamente circunscrita, nós precisamos definir o que é prioridade para o nosso país em termos de desenvolvimento. Precisamos nos colocar a questão dos graves prejuízos ao patrimônio biológico e genético causados pelo consumo exponencial de agrotóxicos, levando à morte milhares de seres vivos envolvidos direta ou indiretamente com a produção agrícola. Ora, as pesquisas nas áreas das ciências e das tecnociências demonstram, há décadas, que as decisões sobre as políticas públicas em um Estado Democrático de Direito para fazer frente à degradação ambiental e ao uso predatório dos recursos naturais não podem mais ser tomadas apenas por critérios econômicos. É preciso agir de forma responsável em um mundo comum que contemple a todos em direitos e deveres.

Eu gostaria de concluir essa entrevista lembrando que quando a intervenção humana faz falta para modificar o curso das coisas na Era do Antropoceno, e criar o novo, o mundo é ameaçado pela sua própria ação destrutiva. Portanto, não há tempo para pessimismo e crise existencial quando ações individuais e coletivas precisam ser empreendidas se quisermos continuar avançando na construção de uma sociedade sustentável, passando de uma economia que tolera danos ambientais a uma que não tolera.

If trees could talk: Forest research network reveals global change effects (Science Daily)

Date: September 26, 2014

Source: Smithsonian Tropical Research Institute

Summary: Permafrost thaw drives forest loss in Canada, while drought has killed trees in Panama, southern India and Borneo. In the U.S., in Virginia, over-abundant deer eat trees before they reach maturity, while nitrogen pollution has changed soil chemistry in Canada and Panama. More than 100 collaborators have now published a major overview of what 59 forests in 24 countries teach us about forest responses to global change.


In addition to identifying, mapping, measuring and monitoring trees in the CTFS-ForestGEO study plots, researchers describe the relatedness of trees, track flower and seed production, collect insects, survey mammals, quantify carbon stocks and flows within the ecosystem, take soil samples and measure climate variables like rainfall and temperature. The thorough study of these plots provides insights into not only how forests are changing but also why. Credit: Beth King, STRI

Permafrost thaw drives forest loss in Canada, while drought has killed trees in Panama, southern India and Borneo. In the U.S., in Virginia, over-abundant deer eat trees before they reach maturity, while nitrogen pollution has changed soil chemistry in Canada and Panama. Continents apart, these changes have all been documented by the Smithsonian-led Center for Tropical Forest Science-Forest Global Earth Observatory, CTFS-ForestGEO, which released a new report revealing how forests are changing worldwide.

“With 107 collaborators we’ve published a major overview of what 59 forests in 24 countries, where we monitor nearly 6 million trees teach us about forest responses to global change,” said Kristina Anderson-Teixeira, first author of the report and CTFS-ForestGEO and ecosystem ecologist based at the Smithsonian Conservation Biology Institute.

Many of the changes occurring in forests worldwide are attributable to human impacts on climate, atmospheric chemistry, land use and animal populations that are so pervasive as to warrant classification of a new geologic period in Earth’s history — the Anthropocene, the Age of Humans.

Measuring and understanding the effects of all these changes — collectively termed “global change” — are easier said than done. Some of the best information about these global-scale changes comes from CTFS-ForestGEO, the only network of standardized forest-monitoring sites that span the globe.

Since the censuses began at the first site on Barro Colorado Island in Panama in 1981, atmospheric carbon dioxide has increased by 16 percent. The forest sites in the network have warmed by an average of over 1 degree F (0.6 degree C) and experienced up to 30 percent changes in precipitation. Landscapes around protected sites experience deforestation.

The plot network now includes forests from Brazil to northern Canada, from Gabon to England and from Papua New Guinea to China.

In addition to identifying, mapping, measuring and monitoring trees, researchers describe the relatedness of trees, track flower and seed production, collect insects, survey mammals, quantify carbon stocks and flows within the ecosystem, take soil samples and measure climate variables like rainfall and temperature. The thorough study of these plots provides insights into not only how forests are changing but also why.

Climate change scenarios predict that most of these sites will face warmer and often drier conditions in the future — some experiencing novel climates with no modern analogs. Forests are changing more rapidly than expected by chance alone, and shifts in species composition have been associated with environmental change. Biomass increased at many tropical sites across the network.

“It is incredibly rewarding to work with a team of forest scientists from 78 research institutions around the world, including four Smithsonian units” Anderson-Teixeira said. “CTFS-ForestGEO is a pioneer in the kind of collaborative effort it takes to understand how forests worldwide are changing.”

“We look forward to using the CTFS-ForestGEO network to continue to understand how and why forests respond to change, and what this means for the climate, biodiversity conservation and human well-being,” said Stuart Davies, network director.

Journal Reference:

  1. Anderson-Teixeira, K.J., Davies, S.J., Bennett, A.C., et al. CTFS-ForestGEO: A worldwide network monitoring forests in an era of global change.. Global Change Biology, 2014

On the Cusp of Climate Change (New York Times)

U.S. Fish and Wildlife Service, via Associated Press

Walruses

Sea ice is critical for all parts of the walrus’s life cycle. Adults dive and eat on these frigid platforms, and females give birth and raise their pups there. But as sea ice retreats during Arctic summers, walruses are being driven ashore.

“In the summer we’ve seen the sea ice recede far to the north,” said Chadwick V. Jay, a research ecologist for the United States Geological Survey. That change is “making it very difficult for walruses to make a living.”

In five of the last seven summers, tens of thousands of female Pacific walruses and their pups have come ashore in Alaska, farther from their preferred prey: the clam, worm and snail beds in the deep waters of the Bering and Chukchi Seas.

An Animal Gamble in the Arctic (8:59) – The Arctic is changing — fast. Two experts who have spent decades working there believe that the marine mammals who call the high latitudes home are now locked into a human-forced ecological game of chance.

Sheng Li/Reuters

Tea

In China, the tea harvest depends on the monsoons: The best tea is harvested in springtime, when the weather is still dry. But climate change threatens to extend the monsoon season.

“Post monsoon season, farmers get much less from their harvest, and a lot of the chemicals that give tea its flavor drop,” said Colin M. Orians, a chemical ecologist at Tufts University. “If climate changes the onset of the monsoon season, farmers will have a shorter window in which to harvest their tea.”

Over the next four years, Dr. Orians and his team will investigate the effects of changing temperatures and rainfall on tea quality and on the livelihoods of farmers who depend on the harvest.

Todd W. Pierson/University of Georgia

Salamanders

Salamanders in the Appalachian Mountains are getting smaller, and species at lower altitudes, where the greatest drying and warming has occurred, are the most affected. One species became 18 percent smaller over 55 years.

“It could be that a change in body size is the first response to climate change,” said Karen Lips, an ecologist at the University of Maryland. “Their food may be affected, and they may be producing smaller babies.”

Dr. Lips partially relied on the data of Richard Highton, a retired ecologist from the University of Maryland who spent 50 years studying and collecting salamanders that are now preserved at the Smithsonian Institution. At the time of his retirement, he noted that salamanders were mysteriously disappearing.

“If they are not nearly as big, they may not be producing as many offspring,” Dr. Lips said.

To test the theory, Dr. Lips and her team plan to raise salamanders in incubators that mimic different climates.

Nikola Solic/Reuters

Bumblebees

Bumblebees and other pollinators are critical to global agriculture, but recent studies suggest that up to one-quarter of Europe’s bumblebee population may die out.

Researchers say that climate change is at least partly to blame, along with disease and loss of habitat.

Scientists estimate that pollinators indirectly contribute about $30 billion a year to the European economy.  “Pollinators are essential to our population,” said Jean-Christophe Vié, deputy director of the species program at the International Union for Conservation of Nature in Switzerland.

Felix Kaestle/European Pressphoto Agency

Roe Deer

Roe deer, a small, reddish-brown species that flourishes all over Europe, give birth when new plant growth provides ample nutritious food for the mother. But flowers are blooming earlier than they used to, and the deer are missing their meals.

Researchers tracked deer births from 1985 to 2011 in the Champagne region of northeastern France, where average spring temperatures have steadily increased and flowering time is coming gradually earlier. The study is online in PLOS Biology.

The deer time their fertility by light availability, not temperature. With earlier springs, they are now giving birth too late to take advantage of the best food.

Using data on 1,095 births, the scientists calculated that the mismatch between flowering time and birth over the period had grown by 36 days.

The researchers estimate that deer fitness declined by 6 percent over the period, and by 14 percent in 2007 and 2011, when flowering was particularly early.

“Roe deer are very dependent on large quantities of high quality food, and the critical stage is the first week’s supply,” said the lead author, Jean-Michel Gaillard, a director of research at the National Center for Scientific Research at the University of Lyon. “Unlike birds, for example, that can migrate and breed earlier, roe deer cannot.”

Marcelo Del Pozo/Reuters

Olives

In the Mediterranean Basin, small olive farms can support entire families. Olive trees are notoriously drought-resistant, and even in arid ecosystems they attract migratory birds and a host of insect species.

But as the region warms, some olive trees will not be as productive.

“In the south, you’re going to see a lower crop yield,” said Andrew Paul Gutierrez, an ecologist at the University of California, Berkeley. “In marginal areas, the farmers will just go out of business.”

Dr. Gutierrez and his colleagues predict that some local farmers ultimately will have to abandon their orchards, leaving barren swaths of desert where biodiversity once flourished.

Tom McHugh/Science Source

Lemmings

Contrary to myth, lemmings do not commit mass suicide. But populations do rise and fall in predictable cycles, to the benefit and detriment of predators like arctic foxes and migratory birds.

Recently, scientists noticed that some groups of lemmings have died off.

“The lemming cycle is the heartbeat of the terrestrial Arctic,” said Nicolas Lecomte, a biologist at the University of Moncton in Canada. “Now we’re seeing the collapse of the main prey of many terrestrial predators.”

Lemmings survive harsh winters by hiding in the snow. When warmer temperatures bring off-season rain, that snow turns to ice, and the lemmings cannot burrow.

Dr. Lecomte has found that as lemmings die off en masse, the fragile Arctic ecosystem is growing weaker.

Asit Kumar/Agence France-Presse – Getty Images

Wheat, Rice and Corn

If wheat, rice and corn are going to continue to feed the world, the crops will have to adapt to warmer temperatures. The latest report from the Intergovernmental Panel on Climate Change offers some predictions.

The analysis, published last spring in Nature Climate Change, concluded that a 3.6 degree Fahrenheit increase in temperature will bring a significant decline in crop yields.

Most projections see a decrease from 2030 onward, with greater decreases in the 2040s and 2050s.

Selective breeding and changes in irrigation methods, pest control, fertilization and planting dates may compensate, partially, for the temperature change. But most of these adaptations will work better in temperate regions, while tropical crop yields will continue to decline.

Extreme weather events — another consequence of climate change — will affect yields year-to-year in ways that are difficult to forecast.

“There are two pieces of bad news here,” said the lead author of the I.P.C.C report, Andy J. Challinor, a professor of climate impact at the University of Leeds in England. “One is that average yields are going down. The other is that yields in any given year will be less reliable.”

Patrick Kerwin

Sharks

Sharks pursue their prey partly by odor, but rising carbon dioxide levels may severely impair their sense of smell.

Scientists used the smooth dogfish, a small shark, as an experimental animal. They created tanks in which some jets of water held the odor of squid, a favorite food, or no odor at all. The water in the tanks also contained varying levels of carbon dioxide.

With carbon dioxide levels resembling today’s, the sharks spent 60 percent of their time nosing about the plume with the squid odor. But in water with carbon dioxide concentrations predicted for the year 2100, the animals actively avoided the jet with the food odor, spending only 15 percent of their time there.

Any change in shark feeding habits might affect other species as well.

“There might be a decrease in hunting behavior among sharks, and an increase in prey animals as a result,” said a co-author, Ashley R. Jennings, a researcher at Boston University. “That’s assuming the prey animals aren’t being affected by CO₂ as well.”

Sue-Ann Watson

Conch Snails

As the oceans gather carbon, a small sea snail that lives in the Great Barrier Reef risks losing its famous ability to leap.

The conch snail jumps to escape from a predator, also a sea snail, that tries to inject it with a poisonous dart.

In laboratory experiments in water with increased carbon dioxide levels, the snails were 50 percent less likely to jump. And snails that did jump took nearly twice as long to do so.

The carbon dioxide and acidity disrupt a neurotransmitter receptor in the snail’s nervous system, one that other marine animals also rely on.

“They are very widespread,” said Sue-Ann Watson, a biologist at James Cook University in Australia. “It could affect many marine animals and their behaviors.”

Oceans today are 30 percent more acidic than they were 250 years ago, when the Industrial Revolution started. And it is getting worse.

“By the end of the century, if we carry on with business as usual, they will be 150 percent more acidic than they were 250 years ago,” Dr. Watson said.

Gifford Miller

Moss

As Arctic temperatures rise every summer, some of the ice on Canada’s Baffin Island melts, revealing the moss trapped underneath. Now, using radiocarbon dating, researchers have determined that until recently some of that moss hadn’t seen daylight in 44,000 years.

The melting ice not only gives scientists the chance to study ancient moss, but adds to evidence that climate change is caused by human activities, not Earth’s natural warming and cooling cycle, said Gifford H. Miller, a geologist at the University of Colorado.

“Cyclical warming is mostly related to the Earth’s irregular orbit around the sun,” he said. The Earth warms when it’s nearer the sun and cools when it’s farther away.

“For the past 10,000 years, we’ve been getting farther away,” he said. The exposure of such ancient moss suggests “the Arctic is now experiencing warmer summers than at any time since the end of the Ice Age.”

Science/Associated Press

Chickadees

Black-capped chickadees are commonly found in the Northeastern United States. Carolina chickadees make their home in the Southeast. Between them is a narrow zone in which both breeds reproduce in the spring.

As winter temperatures have risen over the past decade, the birds’ social scene has moved steadily northward. Today, it is about seven miles farther north than it was in 2004.

The reason? Carolina chickadees are trying to move north — like many other species dealing with climate change — and are running into the black-caps.

“As they start interacting with the black-caps, they try to hybridize,” said Robert L. Curry, a biologist at Villanova University who has studied the birds. But a high percentage of the hybrid eggs don’t hatch, he has found, and hybrid chickadees are probably less fertile.

This is unfortunate for both species in the short term, but it would be even worse for two species not accustomed to mixing.

“This is a model for what could happen if you had an introduced species moving into a new area because of climate change, then come in contact with a species it’s never met before,” Dr. Curry said.

David Inouye

Wildflowers

To everything there is a season — including, of course, the flowering of plants. But a warming climate is changing the timing in complicated ways.

Scientists reviewed 39 years of records of flowering plants in the Rocky Mountains in Colorado, a period in which each decade saw a 0.72 degree Fahrenheit increase in average summer temperatures and a 3.5-day earlier spring snow melt.

The resulting study, published in Proceedings of the National Academy of Sciences last spring, found considerable variation in the changes in flowering, and a much larger number of species affected than previously believed.

Some form of flowering change occurred in 41 of 60 species examined. On average, first flowering advanced by 3.3 days per decade, peak flowering by 2.5 days, and final flowering by 1.5 days.

“The changes in the flower community are potentially reshuffling what’s available for the pollinators,” said a co-author, Amy M. Iler, a postdoctoral researcher at the Rocky Mountain Biological Laboratory. “We don’t know what all the consequences will be. It’s likely it will be good for some and bad for others.”

Dr. Andrew Weeks

Fruit Flies

As temperatures rise, insect populations may relocate around the globe in search of more hospitable environments. But it is the extreme highs, not just the average rise in temperatures, that may determine where they end up.

Scientists studied 10 different fruit fly species in Australia (both temperate and tropical), noting the temperature ranges each preferred for mating and everyday life, and their thresholds for extreme hot and cold.

All the species lived in environments where temperatures were sometimes less than optimal, the researchers found, but none chose places that forced them to endure extreme heat.

“Many species might undergo seasons where conditions are not optimal for growth and reproduction,” said Johannes Overgaard, a biologist at Aarhus University in Denmark and an author of the study. “They just survive the season. But what they can’t survive is temperatures beyond their threshold.”

This is bad news for the insects in Australia, who might find themselves with fewer habitable lands as extreme conditions dominate the continent. Whether this will also hold true for other continents is not yet known, Dr. Overgaard said.

Kelly Shimoda for The New York Times

Rock Snot

An unsightly algae known as “rock snot” has been surfacing in lake waters in Eastern Canada.

“It looks like torn-up toilet paper that is attached to rocks,” said John Smol, a biologist at Queen’s University in Ontario who is studying the algae’s growth. “It’s an aesthetic issue, and as it decomposes it becomes a smell issue.”

Rock snot, or didymo, was thought of as an invasive species introduced by humans. But an analysis of fossilized algae in the lakes indicates that it is native.

The algae was present in one lake in Quebec since at least 1970, 36 years before it was first noticed, Dr. Smol’s team found.

Didymo tends to grow in flowing waters. Warmer winters may be producing less ice and snow that disrupt the flow.

Over time, the rock snot will become much more than an eyesore, Dr. Smol said. It will displace other organisms and destroy fish habitats.

F. Stuart Westmorland/Science Source

Coral Reefs

Ocean acidification endangers coral in every ocean. But researchers haverecently discovered unusual reefs in Palau that are thriving in increasingly acidicified waters.

Ocean acidification occurs when carbon emitted by human activities mixeswith ocean waters. This decreases carbonate ions in the water, which coral andother organisms need to form their protective shells.

Yet in 2012, researchers working in the waters off Palau identified coralreefs that were both extremely acidified and very healthy. What’s differentabout these reefs, said Kathryn Shamberger, anoceanographer at Texas A&M University, is that the waters became acidifiedthrough natural means.

“The growth of the reef itself and the breathing of the organisms onthe reef,” not man-made emissions, added carbon to the water, she said.

In a typical reef these products would be flushed out before they could havemuch effect. But the waters in Palau pool around its many small islands.

Might reefs suffering from man-made acidification survive as well as these?Dr. Shamberger and others are trying to figure thatout.

Eric Sanford

Shellfish

Increasing ocean acidity makes it difficult for marine species to build their shells and, by softening calcium carbonate, makes shells weaker. That’s bad news not only for clams, oysters and scallops, but for tens of thousands of lesser known species — echinoderms like star fish and sea urchins, colonies of tiny invertebrates, reef corals and many others.

In June, The Biological Bulletin devoted an issue to research on ocean calcification with papers and reviews on a large variety of organisms.

“Climate change and ocean acidification are going to manifest themselves in the ways species interact — eating each other, facilitating each other’s growth,” said an editor of the issue, Gretchen Hofmann, a marine biologist at the University of California, Santa Barbara.

And yet, she added, there is some hope. “In coastal areas there are plants that actually change the pH of the water — in a good way. Eel grass and surf grasses can provide refuge from future acidification.”

Sophie McCoy

Coral Algae

Coralline algae are the cement that binds many reefs together. By filling the gaps between corals with a hard outer shell, these algae fortify the reef and provide shelter for growing organisms.

To produce that shell, this special algae — much like oysters and snails — require a steady supply of carbonate. But as carbonate becomes harder and harder to come by in increasingly acid oceans, the once-dominant species of coralline algae can no longer grow shells as thick as they once were. Other species are moving in to claim more territory.

For now, it might not be so bad to give these competitors a chance, said Sophie McCoy, an ecologist with the Plymouth Marine Laboratory in England, who lead a study on the phenomenon when she was at the University of Chicago earlier this year.

“In the short term, I think it might be a good thing in terms of local biodiversity,” she said. In the long run, however, “all the species of this algae will start to be affected.”

That could mean less coral overall, and less habitat for the organisms that call it home.

Michael Francis McElroy for the New York Times

Invasive Species

Biological intruders, from California’s medflies to Florida’s Burmese pythons, cost the United States billions of dollars every year. Rising temperatures and changing weather patterns may make them even harder to control.

“Biology can be very complicated, especially when climate change comes in,” said Andrew Paul Gutierrez, an ecologist at the University of California, Berkeley. “That’s going to affect these species in unknown ways.”

In a book on the subject, Dr. Gutierrez notes one jarring possibility: that higher temperatures may invite still more invasive species into fragile ecosystems.

Jim Gathany/Center for Disease Control

Malaria

Historically, the highlands of Ethiopia offered protection from deadly, mosquito-borne malaria. But perhaps not for much longer.

The disease was mitigated at higher altitudes, where cooler temperatures kept mosquitoes in check. Now, malaria is spreading into higher elevations during warmer years, then back into lower altitudes when temperatures cool.

Looking at temperature records from the two regions, there is a clear link between the changing climate and higher rates of the disease, said Mercedes Pascual, an ecologist at the University of Michigan.

“The disease is seasonal,” she said. “But climate change here could make the problem much bigger.”

She and her colleagues found that a 1.8 degree Fahrenheit temperature increase could result in an additional three million malaria cases annually in Ethiopia among those under age 15.

Força-tarefa internacional fará diagnóstico sobre polinização no mundo (Fapesp)

23 de setembro de 2014

Por Elton Alisson

Primeira avaliação da Plataforma Intergovernamental de Biodiversidade e Serviços Ecossistêmicos será sobre polinizadores, polinização e produção de alimentos. Trabalho é coordenado por pesquisador inglês e por brasileira (foto: Wikimedia)

Agência FAPESP – Um grupo de 75 pesquisadores de diversos países-membros da Plataforma Intergovernamental de Biodiversidade e Serviços Ecossistêmicos (IPBES, na sigla em inglês), que reúne 119 nações de todas as regiões do mundo, fará uma avaliação global sobre polinizadores, polinização e produção de alimentos.

O escopo do projeto foi apresentado na última quarta-feira (17/09) em São Paulo, no auditório da FAPESP, em um encontro de integrantes do organismo intergovernamental independente, voltado a organizar o conhecimento sobre a biodiversidade no mundo e os serviços ecossistêmicos.

“A ideia do trabalho é avaliar todo o conhecimento existente sobre polinização no mundo e identificar estudos necessários na área para auxiliar os tomadores de decisão dos países a formular políticas públicas para a preservação desse e de outros serviços ecossistêmicos prestados pelos animais polinizadores”, disse Vera Imperatriz Fonseca, do Instituto de Biociências da Universidade de São Paulo (USP) e do Instituto Tecnológico Vale Desenvolvimento Sustentável (ITVDS), à Agência FAPESP.

“Já estamos conhecendo melhor o problema [da crise da polinização no mundo]. Agora, precisamos identificar soluções”, disse a pesquisadora, que coordena a avaliação ao lado de Simon Potts, professor da University of Reading, do Reino Unido.

De acordo com Fonseca, há mais de 100 mil espécies de animais invertebrados polinizadores no mundo, dos quais 20 mil são abelhas. Além de insetos polinizadores – que serão o foco do relatório –, há também cerca de 1,2 mil espécies de animais vertebrados, tais como pássaros, morcegos e outros mamíferos, além de répteis, que atuam como polinizadores.

Estima-se que 75% dos cultivos mundiais e entre 78% e 94% das flores silvestres do planeta dependam da polinização por animais, apontou a pesquisadora.

“Há cerca de 300 mil espécies de flores silvestres que dependem da polinização por insetos”, disse Fonseca. “O valor anual estimado desse serviço ecossistêmico prestado por insetos na agricultura é de US$ 361 bilhões. Mas, para a manutenção da biodiversidade, é incalculável”, afirmou.

Nos últimos anos registrou-se uma perda de espécies nativas de insetos polinizadores no mundo, causada por, entre outros fatores, desmatamento de áreas naturais próximas às lavouras, uso de pesticidas e surgimento de patógenos.

Se o declínio de espécies de insetos polinizadores se tornar tendência, pode colocar em risco a produtividade agrícola e, consequentemente, a segurança alimentar nas próximas décadas, disse a pesquisadora.

“A população mundial aumentará muito até 2050 e será preciso produzir uma grande quantidade de alimentos com maior rendimento agrícola, em um cenário agravado pelas mudanças climáticas. A polinização por insetos pode contribuir para solucionar esse problema”, afirmou Fonseca.

Segundo um estudo internacional, publicado na revista Current Biology, estima-se que o manejo de colmeias de abelhas utilizadas pelos agricultores para polinização – como as abelhas domésticas Apis mellifera L, amplamente criadas no mundo todo – tenha aumentado em cerca de 45% entre 1950 e 2000.

As áreas agrícolas dependentes de polinização, no entanto, também cresceram em mais de 300% no mesmo período, apontam os autores da pesquisa.

“Apesar de ter aumentado o manejo de espécies de abelhas polinizadoras, precisamos muito mais do que o que temos no momento para atender às necessidades da agricultura”, avaliou Fonseca.

O declínio das espécies de polinizadores no mundo estimula a polinização manual em muitos países. Na China, por exemplo, é comum o comércio de pólen para essa finalidade, afirmou a pesquisadora.

“Na ausência de animais para fazer a polinização, tem sido feita a polinização manual de lavouras de culturas importantes, como o dendê e a maçã. No Brasil se faz a polinização manual de maracujá , tomate e de outras culturas”, disse.

Falta de dados

Segundo Fonseca, já há dados sobre o declínio de espécies de abelhas, moscas-das-flores (sirfídeos) e de borboletas na Europa, nos Estados Unidos, no Oriente Médio e no Japão.

Um estudo internacional, publicado no Journal of Apicultural Research, apontou perdas de aproximadamente 30% de colônias de Apis mellifera L em decorrência da infestação pelo ácaro Varroa destructor, que diminui a vida das abelhas e, consequentemente, sua atividade de polinização nas flores, em especial nos países do hemisfério Norte.

Na Europa, as perdas de colônias de abelhas em decorrência do ácaro podem chegar a 53% e, no Oriente Médio, a 85%, indicam os autores do estudo. No entanto, ainda não há estimativas sobre a perda de colônias e de espécies em continentes como a América do Sul, África e Oceania.

“Não temos dados sobre esses continentes. Precisamos de informações objetivas para preenchermos uma base de dados sobre polinização em nível mundial a fim de definir estratégias de conservação em cada país”, avaliou Fonseca. “Também é preciso avaliar os efeitos de pesticidas no desaparecimento das abelhas em áreas agrícolas, que têm sido objeto de estudos e atuação dos órgãos regulatórios no Brasil.”

Outra grande lacuna a ser preenchida é a de estudos sobre interações entre espécies de abelhas polinizadoras nativas com as espécies criadas para polinização, como as Apis mellifera L.

Um estudo internacional publicado em 2013 indicou que, quando as Apis mellifera L e as abelhas solitárias atuam em uma mesma cultura, a taxa de polinização aumenta significativamente, pois elas se evitam nas flores e mudam mais frequentemente de local de coleta de alimento, explicou Fonseca.

De acordo com a pesquisadora, uma solução para a polinização em áreas agrícolas extensas tem sido o uso de colônias de polinizadores provenientes da produção de colônias em massa, como de abelhas Bombus terrestris, criadas em larga escala e inclusive exportadas.

Em 2004, foi produzido 1 milhão de colônias dessa abelha para uso na agricultura.

Na América do Sul, o Chile foi o primeiro país a introduzir essas abelhas para polinização de frutas e verduras. Em algumas áreas onde foi introduzida, entretanto, essa espécie exótica de abelha mostrou ser invasora e ter grande capacidade de ocupar novos territórios.

“É preciso estudar mais a interação entre as espécies para identificar onde elas convivem, qual a contribuição de cada uma delas na polinização e se essa interação é positiva ou negativa”, indicou Fonseca.

“Além disso, a propagação de doenças para as espécies nativas de abelhas causa preocupação e deve ser um foco da pesquisa nos próximos anos”, indicou.

Problema global

De acordo com Fonseca, a avaliação intitulada Polinizadores, polinização e produção de alimentos, do IPBES, está em fase de redação e deverá ser concluída no fim de 2015.

Além de um relatório técnico, com seis capítulos de 30 páginas cada, a avaliação também deverá apresentar um texto destinado aos formuladores de políticas públicas sobre o tema, contou.

“A avaliação sobre polinização deverá contribuir para aumentar os esforços de combate ao problema do desaparecimento de espécies de polinizadores no mundo, que é urgente e tem uma relevância política e econômica muito grande, porque afeta a produção de alimentos”, afirmou.

A avaliação será o primeiro diagnóstico temático realizado pelo IPBES e deverá ser disponibilizada para o público em geral em dezembro de 2015. O painel planeja produzir nos próximos anos outros levantamentos semelhantes sobre outros temas como espécies invasoras, restauração de habitats e cenários de biodiversidade no futuro.

Uma estratégia adotada para tornar os diagnósticos temáticos mais integrados foi a criação de forças-tarefa – voltadas à promoção da capacitação profissional e institucional, ao aprimoramento do processo de gerenciamento de dados e informações científicas e à integração do conhecimento tradicional indígena e das pesquisas locais aos processos científicos –, que deverão auxiliar na produção do texto final.

“O IPBES trabalha em parceria com a FAO [Organização das Nações Unidas para a Alimentação e a Agricultura], Unep [Programa das Nações Unidas para o Meio Ambiente], CBD [Convention on Biological Diversity], Unesco [Organização das Nações Unidas para a Educação, a Ciência e a Cultura] e todos os esforços anteriores que trataram do tema de polinização”, afirmou Fonseca.

A polinização foi o primeiro tópico a ser escolhido pelos países-membros da plataforma intergovernamental, entre outras razões, por ser um problema global e já existir um grande número de estudos sobre o assunto, contou Carlos Joly, coordenador do Programa FAPESP de Pesquisas em Caracterização, Conservação, Restauração e Uso Sustentável da Biodiversidade (BIOTA-FAPESP) e membro do Painel Multidisciplinar de Especialistas do IPBES.

“Como já há um arcabouço muito grande de dados sobre esse tema, achamos que seria possível elaborar rapidamente uma síntese. Além disso, o tema tem um impacto global muito grande, principalmente por estar associado à produção de alimentos”, avaliou Joly.

Os 75 pesquisadores participantes do projeto foram indicados pelo Painel Multidisciplinar de Especialistas do IPBES, que se baseou nas indicações recebidas dos países-membros e observadores da plataforma intergovernamental.

Dois do grupo são escolhidos para coordenar o trabalho, sendo um de um país desenvolvido e outro de uma nação em desenvolvimento.

“O convite e a seleção da professora Vera Imperatriz Fonseca como coordenadora da avaliação é reflexo da qualidade da ciência desenvolvida nessa área no Brasil e da experiência dela em trabalhar com diagnósticos nacionais”, avaliou Joly. “Gostaríamos de ter mais pesquisadores brasileiros envolvidos na elaboração dos diagnósticos do IPBES.”

Leia mais sobre a reunião do IPBES na sede da FAPESP em  http://agencia.fapesp.br/painel_intergovernamental_discute_capacitacao_para_pesquisas_em_biodiversidade/19840/

Certain gut bacteria may induce metabolic changes following exposure to artificial sweeteners (Science Daily)

Date: September 17, 2014

Source: Weizmann Institute of Science

Summary: Artificial sweeteners have long been promoted as diet and health aids. But breaking research shows that these products may be leading to the very diseases they were said to help prevent: scientists have discovered that, after exposure to artificial sweeteners, our gut bacteria may be triggering harmful metabolic changes.


This image depicts gut microbiota. Credit: Weizmann Institute of Science

Artificial sweeteners — promoted as aids to weight loss and diabetes prevention — could actually hasten the development of glucose intolerance and metabolic disease, and they do so in a surprising way: by changing the composition and function of the gut microbiota — the substantial population of bacteria residing in our intestines. These findings, the results of experiments in mice and humans, were published September 17 in Nature. Dr. Eran Elinav of the Weizmann Institute of Science’s Department of Immunology, who led this research together with Prof. Eran Segal of the Department of Computer Science and Applied Mathematics, says that the widespread use of artificial sweeteners in drinks and food, among other things, may be contributing to the obesity and diabetes epidemic that is sweeping much of the world.

For years, researchers have been puzzling over the fact that non-caloric artificial sweeteners do not seem to assist in weight loss, with some studies suggesting that they may even have an opposite effect. Graduate student Jotham Suez in Dr. Elinav’s lab, who led the study, collaborated with lab member Gili Zilberman-Shapira and graduate students Tal Korem and David Zeevi in Prof. Segal’s lab to discover that artificial sweeteners, even though they do not contain sugar, nonetheless have a direct effect on the body’s ability to utilize glucose. Glucose intolerance — generally thought to occur when the body cannot cope with large amounts of sugar in the diet — is the first step on the path to metabolic syndrome and adult-onset diabetes.

The scientists gave mice water laced with the three most commonly used artificial sweeteners, in amounts equivalent to those permitted by the U.S. Food and Drug Administration (FDA). These mice developed glucose intolerance, as compared to mice that drank water, or even sugar water. Repeating the experiment with different types of mice and different doses of the artificial sweeteners produced the same results — these substances were somehow inducing glucose intolerance.

Next, the researchers investigated a hypothesis that the gut microbiota are involved in this phenomenon. They thought the bacteria might do this by reacting to new substances like artificial sweeteners, which the body itself may not recognize as “food.” Indeed, artificial sweeteners are not absorbed in the gastrointestinal tract, but in passing through they encounter trillions of the bacteria in the gut microbiota.

The researchers treated mice with antibiotics to eradicate many of their gut bacteria; this resulted in a full reversal of the artificial sweeteners’ effects on glucose metabolism. Next, they transferred the microbiota from mice that consumed artificial sweeteners to “germ-free,” or sterile, mice — resulting in a complete transmission of the glucose intolerance into the recipient mice. This, in itself, was conclusive proof that changes to the gut bacteria are directly responsible for the harmful effects to their host’s metabolism. The group even found that incubating the microbiota outside the body, together with artificial sweeteners, was sufficient to induce glucose intolerance in the sterile mice. A detailed characterization of the microbiota in these mice revealed profound changes to their bacterial populations, including new microbial functions that are known to infer a propensity to obesity, diabetes, and complications of these problems in both mice and humans.

Does the human microbiome function in the same way? Dr. Elinav and Prof. Segal had a means to test this as well. As a first step, they looked at data collected from their Personalized Nutrition Project (www.personalnutrition.org), the largest human trial to date to look at the connection between nutrition and microbiota. Here, they uncovered a significant association between self-reported consumption of artificial sweeteners, personal configurations of gut bacteria, and the propensity for glucose intolerance. They next conducted a controlled experiment, asking a group of volunteers who did not generally eat or drink artificially sweetened foods to consume them for a week, and then undergo tests of their glucose levels and gut microbiota compositions.

The findings showed that many — but not all — of the volunteers had begun to develop glucose intolerance after just one week of artificial sweetener consumption. The composition of their gut microbiota explained the difference: the researchers discovered two different populations of human gut bacteria — one that induced glucose intolerance when exposed to the sweeteners, and one that had no effect either way. Dr. Elinav believes that certain bacteria in the guts of those who developed glucose intolerance reacted to the chemical sweeteners by secreting substances that then provoked an inflammatory response similar to sugar overdose, promoting changes in the body’s ability to utilize sugar.

Prof. Segal states, “The results of our experiments highlight the importance of personalized medicine and nutrition to our overall health. We believe that an integrated analysis of individualized ‘big data’ from our genome, microbiome, and dietary habits could transform our ability to understand how foods and nutritional supplements affect a person’s health and risk of disease.”

According to Dr. Elinav, “Our relationship with our own individual mix of gut bacteria is a huge factor in determining how the food we eat affects us. Especially intriguing is the link between use of artificial sweeteners — through the bacteria in our guts — to a tendency to develop the very disorders they were designed to prevent; this calls for reassessment of today’s massive, unsupervised consumption of these substances.”

Journal Reference:

  1. Jotham Suez, Tal Korem, David Zeevi, Gili Zilberman-Schapira, Christoph A. Thaiss, Ori Maza, David Israeli, Niv Zmora, Shlomit Gilad, Adina Weinberger, Yael Kuperman, Alon Harmelin, Ilana Kolodkin-Gal, Hagit Shapiro, Zamir Halpern, Eran Segal, Eran Elinav. Artificial sweeteners induce glucose intolerance by altering the gut microbiota. Nature, 2014; DOI: 10.1038/nature13793

Why are consumers willing to spend more money on ethical products? (Science Daily)

Date: September 16, 2014

Source: Journal of Consumer Research, Inc.

Summary: What motivates consumers to make ethical choices such as buying clothing not made in a sweat shop, spending more money on fair-trade coffee, and bringing their own bags when they go shopping? According to a new study, ethical consumption is motivated by a need for consumers to turn their emotions about unethical practices into action.


What motivates consumers to make ethical choices such as buying clothing not made in a sweat shop, spending more money on fair-trade coffee, and bringing their own bags when they go shopping? According to a new study in the Journal of Consumer Research, ethical consumption is motivated by a need for consumers to turn their emotions about unethical practices into action.

“Advocates of ethical consumerism suggest that consumers should consider the environmental and human costs of the products they choose, but unfortunately only a small number of people in North America consume ethically on a regular basis while most consumers just look for good deals and ignore the social impact of the products they buy. Why are some consumers willing to spend time, money, and energy on making more responsible choices?” writes author Ahir Gopaldas (Fordham University).

After analyzing dozens of websites of advocacy groups and companies driven by ethical mission statements, and conducting at-home interviews with people who identify as ethical consumers, the author identified three common emotions driving ethical behavior — contempt, concern, and celebration.

Contempt happens when ethical consumers feel anger and disgust toward the corporations and governments they consider responsible for environmental pollution and labor exploitation. Concern stems from a concern for the victims of rampant consumerism, including workers, animals, ecosystems, and future generations.Celebration occurs when ethical consumers experience joy from making responsible choices and hope from thinking about the collective impact of their individual choices.

Advocates of ethical consumerism should consider the role of emotions in motivating consumers to make more responsible decisions. For example, anger can motivate consumers to reject unethical products and concern can encourage consumers to increase charitable donations, while joy and hope can lead consumers to cultivate ethical habits such as participating in recycling programs.

“This research has critical implications for advocacy groups, ethical brand managers, and anyone else trying to encourage mainstream consumers to make more ethical choices. It is simply not enough to change people’s minds. To change society, one must also change people’s hearts. Sentiments ignite passion, fuel commitment, and literally move people to action,” the author concludes.

Journal Reference:

  1. Ahir Gopaldas. Marketplace Sentiments. Journal of Consumer Research, 2014; 000 DOI: 10.1086/678034

Why Do the Anarcho-Primitivists Want to Abolish Civilization? (io9)

George Dvorsky

Sept 12, 2014 11:28am

Why Do the Anarcho-Primitivists Want to Abolish Civilization?

Anarcho-primitivists are the ultimate Luddites — ideologues who favor complete technological relinquishment and a return to a hunter-gatherer lifestyle. We spoke to a leading proponent to learn more about this idea and why he believes civilization was our worst mistake.

Philosopher John Zerzan wants you to get rid of all your technology — your car, your mobile phone, your computer, your appliances — the whole lot. In his perfect world, you’d be stripped off all your technological creature comforts, reduced to a lifestyle that harkens back to when our hunter-gatherer ancestors romped around the African plains.

Why Do the Anarcho-Primitivists Want to Abolish Civilization?

Photo via Cast/John Zerzan/CC

You see, Zerzan is an outspoken advocate of anarcho-primitivism, a philosophical and political movement predicated under the assumption that the move from hunter-gatherer to agricultural subsistence was a stupendously awful mistake — an existential paradigm shift that subsequently gave rise to social stratification, coercion, alienation, and unchecked population growth. It’s only through the abandonment of technology, and a return to “non-civilized” ways of being — a process anarcho-primitivists call “wilding” — that we can eliminate the host of social ills that now plagues the human species.

As an anarchist, Zerzan is opposed to the state, along with all forms of hierarchical and authoritarian relations. The crux of his argument, one inspired by Karl Marx and Ivan Illich, is that the advent of technologies irrevocably altered the way humans interact with each other. There’s a huge difference, he argues, between simple tools that stay under the control of the user, and those technological systems that draw the user under the control of those who produce the tools. Zerzan says that technology has come under the control of an elite class, thus giving rise to alienation, domestication, and symbolic thought.

Why Do the Anarcho-Primitivists Want to Abolish Civilization?

Zerzan is not alone in his views. When the radical Luddite Ted “the Unabomber” Kasczinski was on trial for killing three people and injuring 23, Zerzan became his confidant, offering support for his ideas but condemning his actions (Zerzan recentlystated that he and Kasczinski are “not on terms anymore.”) Radicalized groups have also sprung up promoting similar views, including a Mexican group called the Individualists Tending Toward the Wild — a group with the objective “to injure or kill scientists and researchers (by the means of whatever violent act) who ensure the Technoindustrial System continues its course.” Back in 2011, this group sent several mail bombs to nanotechnology lab and researchers in Latin America, killing two people.

Looking ahead to the future, and considering the scary potential for advanced technologies such as artificial superintelligence and robotics, there’s the very real possibility that these sorts of groups will start to become more common — and more radicalized (similar to the radical anti-technology terrorist group Revolutionary Independence From Technology (RIFT) that was portrayed in the recent Hollywood film, Transcendence).

Why Do the Anarcho-Primitivists Want to Abolish Civilization?EXPAND

But Zerzan does not promote or condone violence. He’d rather see the rise of the “Future Primitive” come about voluntarily. To that end, he uses technology — like computers and phones — to get his particular message across (he considers it a necessary evil). That’s how I was able to conduct this interview with him, which we did over email.

io9: Anarcho-primitivism is as much a critique of modernity as is it a prescription for our perceived ills. Can you describe the kind of future you’re envisioning?

Zerzan: I want to see mass society radically decentralized into face-to-face communities. Only then can the individual be both responsible and autonomous. As Paul Shepard said, “Back to the Pleistocene!”

As an ideology, primitivism is fairly self-explanatory. But why add the ‘anarcho’ part to it? How can you be so sure there’s a link between more primitive states of being and the diminishment of power relations and hierarchies among complex primates?

The anarcho part refers to the fact that this question, this approach, arose mainly within an anarchist or anti-civilization milieu. Everyone I know in this context is an anarchist. There are no guarantees for the future, but we do know that egalitarian and anti-hierarchical relations were the norm with Homo for 1-2 million years. This is indisputable in the anthropological literature.

Then how do you distinguish between tools that are acceptable for use versus those that give rise to “anti-hierarchical relations”?

Those tools that involve the least division of labor or specialization involve or imply qualities such as intimacy, equality, flexibility. With increased division of labor we moved away from tools to systems of technology, where the dominant qualities or values are distancing, reliance on experts, inflexibility.

But tool use and symbolic language are indelible attributes of Homo sapiens — these are our distinguishing features. Aren’t you just advocating for biological primitivism — a kind of devolution of neurological characteristics?

Anthropologists (e.g. Thomas Wynn) seem to think that Homo had an intelligence equal to ours at least a million years ago. Thus neurology doesn’t to enter into it. Tool use, of course, has been around from before the beginning of Homo some 3 million years ago. As for language, it’s quite debatable as to when it emerged.

Early humans had a workable, non-destructive approach, that did not generally speaking involve much work, did not objectify women, and was anti-hierarchical. Does this sound backward to you?

You’ve got some provocative ideas about language and how it demeans or diminishes experience.

Every symbolic dimension — time, language, art, number — is a mediation between ourselves and reality. We lived more directly, immediately before these dimensions arrived, fairly recently. Freud, the arch-rationalist, thought that we once communicated telepathically, though I concede that my critique of language is the most speculative of my forays into the symbolic.

You argue that a hunter-gatherer lifestyle is as close to the ideal state of being as is possible. The Amish, on the other hand, have drawn the line at industrialization, and they’ve subsequently adopted an agrarian lifestyle. What is it about the advent of agriculture and domestication that’s so problematic?

In the 1980s Jared Diamond called the move to domestication or agriculture “the worst mistake humans ever made.” A fundamental shift away from taking what nature gives to the domination of nature. The inner logic of domestication of animals and plants is an unbroken progression, which always deepens and extends the ethos of control. Now of course control has reached the molecular level with nanotechnology, and the sphere of what I think is the very unhealthy fantasies of transhumanist neuroscience and AI.

In which ways can anarcho-primitivism be seen as the ultimate green movement? Do you see it that way?

We are destroying the biosphere at a fearful rate. Anarcho-primitivism seeks the end of the primary institutions that drive the destruction: domestication/civilization and industrialization. To accept “green” and “sustainable” illusions ignores the causes of the all-enveloping undermining of nature, including our inner nature. Anarcho-primitivism insists on a deeper questioning and helps identify the reasons for the overall crisis.

Tell us about the anarcho-primitivist position on science.

The reigning notion of what is science is an objectifying method, which magnifies the subject-object split. “Science” for hunter-gatherers is very basically different. It is based on participation with living nature, intimacy with it. Science in modernity mainly breaks reality down into now dead, inert fragments to “unlock” its “secrets.” Is that superior to a forager who knows a number of things from the way a blade of grass is bent?

Well, being trapped in an endless cycle of Darwinian processes doesn’t seem like the most enlightened or moral path for our species to take. Civilization and industrialization have most certainly introduced innumerable problems, but our ability to remove ourselves from the merciless “survival of the fittest” paradigm is a no-brainer. How could you ever convince people to relinquish the gifts of modernity — things like shelter, food on-demand, vaccines, pain relief, anesthesia, and ambulances at our beckon call?

It is reality that will “convince” people — or not. Conceivably, denial will continue to rule the day. But maybe only up to a point. If/when it can be seen that their reality is worsening qualitatively in every sphere a new perspective may emerge. One that questions the deep un-health of mass society and its foundations. Again, non-robust, de-skilled folks may keep going through the motions, stupefied by techno-consumerism and drugs of all kinds. Do you think that can last?

Most futurists would answer that things are getting better — and that through responsible foresight and planning we’ll be able to create the future we imagine.

“Things are getting better”? I find this astounding. The immiseration surrounds us: anxiety, depression, stress, insomnia, etc. on a mass scale, the rampage shootings now commonplace. The progressive ruin of the natural world. I wonder how anyone who even occasionally picks up a newspaper can be so in the dark. Of course I haven’t scratched the surface of how bad it is becoming. It is deeply irresponsible to promote such ignorance and projections.

That’s a very presentist view. Some left-leaning futurists argue, for example, that ongoing technological progress (both in robotics and artificial intelligence) will lead to an automation revolution — one that will free us from dangerous and demeaning work. It’s very possible that we’ll be able to invent our way out of the current labor model that you’re so opposed to.

Technological advances have only meant MORE work. That is the record. In light of this it is not quite cogent to promise that a more technological mass society will mean less work. Again, reality anyone??

Transhumanists advocate for the iterative improvement of the human species, things like enhanced intelligence and memory, the elimination of psychological disorders (including depression), radical life extension, and greater physical capacities. Tell us why you’re so opposed to these things.

Why I am opposed to these things? Let’s take them in order:

Enhanced intelligence and memory? I think it is now quite clear that advancing technology in fact makes people stupider and reduces memory. Attention span is lessened by Tweet-type modes, abbreviated, illiterate means of communicating. People are being trained to stare at screens at all times, a techno-haze that displaces life around them. I see zombies, not sharper, more tuned in people.

Elimination of psychological disorders? But narcissism, autism and all manner of such disabilities are on the rise in a more and more tech-oriented world.

Radical life extension? One achievement of modernity is increased longevity, granted. This has begun to slip a bit, however, in some categories. And one can ponder what is the quality of life? Chronic conditions are on the rise though people can often be kept alive longer. There’s no evidence favoring a radical life extension.

Greater physical capacities? Our senses were once acute and we were far more robust than we are now under the sign of technology. Look at all the flaccid, sedentary computer jockeys and extend that forward. It is not I who doesn’t want these thing; rather, the results are negative looking at the techno project, eh?

Do you foresee the day when a state of anarcho-primitivism can be achieved (even partially by a few enthusiasts)?

A few people cannot achieve such a future in isolation. The totality infects everything. It all must go and perhaps it will. Do you think people are happy with it?

Final Thoughts

Zerzan’s critique of civilization is certainly interesting and worthy of discussion. There’s no doubt that technology has taken humanity along a path that’s resulted in massive destruction and suffering, both to ourselves and to our planet and its animal inhabitants.

But there’s something deeply unsatisfying with the anarcho-primitivist prescription — that of erasing our technological achievements and returning to a state of nature. It’s fed by a cynical and defeatist world view that buys into the notion that everything will be okay once we regress back to a state where our ecological and sociological footprints are reduced to practically nil. It’s a way of eliminating our ability to make an impact on the world — and onto ourselves.

It’s also an ideological view that fetishizes our ancestral past. Despite Zerzan’s cocksure proclamations to the contrary, our paleolithic forebears were almost certainly hierarchical and socially stratified. There isn’t a single social species on this planet — whether they’re primates or elephants or cetaceans — that doesn’t organize its individuals according to capability, influence, or level of reproductive fitness. Feeling “alienated,” “frustrated,” and “controlled” is an indelible part of the human condition, regardless of whether we live in tribal arrangements or in the information age. The anarcho-primitivist fantasy of the free and unhindered noble savage is just that — a fantasy. Hunter-gatherers were far from free, coerced by the demands of biology and nature to mete out an existence under the harshest of circumstances.

Study traces ecological collapse over 6,000 years of Egyptian history (Science Daily)

Date: September 8, 2014

Source: University of California – Santa Cruz

Summary: Depictions of animals in ancient Egyptian artifacts have helped scientists assemble a detailed record of the large mammals that lived in the Nile Valley over the past 6,000 years. A new analysis of this record shows that species extinctions, probably caused by a drying climate and growing human population in the region, have made the ecosystem progressively less stable. 

Carved rows of animals, including elephants, lions, a giraffe, and sheep, cover both sides of the ivory handle of a ritual knife from the Predynastic Period in Egypt. Credit: Charles Edwin Wilbour Fund, Brooklyn Museum

Depictions of animals in ancient Egyptian artifacts have helped scientists assemble a detailed record of the large mammals that lived in the Nile Valley over the past 6,000 years. A new analysis of this record shows that species extinctions, probably caused by a drying climate and growing human population in the region, have made the ecosystem progressively less stable.

The study, published September 8 in Proceedings of the National Academy of Sciences (PNAS), found that local extinctions of mammal species led to a steady decline in the stability of the animal communities in the Nile Valley. When there were many species in the community, the loss of any one species had relatively little impact on the functioning of the ecosystem, whereas it is now much more sensitive to perturbations, according to first author Justin Yeakel, who worked on the study as a graduate student at the University of California, Santa Cruz, and is now a postdoctoral fellow at the Santa Fe Institute.

Around six millennia ago, there were 37 species of large-bodied mammals in Egypt, but only eight species remain today. Among the species recorded in artwork from the late Predynastic Period (before 3100 BC) but no longer found in Egypt are lions, wild dogs, elephants, oryx, hartebeest, and giraffe.

“What was once a rich and diverse mammalian community is very different now,” Yeakel said. “As the number of species declined, one of the primary things that was lost was the ecological redundancy of the system. There were multiple species of gazelles and other small herbivores, which are important because so many different predators prey on them. When there are fewer of those small herbivores, the loss of any one species has a much greater effect on the stability of the system and can lead to additional extinctions.”

The new study is based on records compiled by zoologist Dale Osborne, whose 1998 book The Mammals of Ancient Egypt provides a detailed picture of the region’s historical animal communities based on archaeological and paleontological evidence as well as historical records. “Dale Osborne compiled an incredible database of when species were represented in artwork and how that changed over time. His work allowed us to use ecological modeling techniques to look at the ramifications of those changes,” Yeakel said.

The study had its origins in 2010, when Yeakel visited a Tutankhamun exhibition in San Francisco with coauthor Nathaniel Dominy, then an anthropology professor at UC Santa Cruz and now at Dartmouth. “We were amazed at the artwork and the depictions of animals, and we realized they were recording observations of the natural world. Nate was aware of Dale Osborne’s book, and we started thinking about how we could take advantage of those records,” Yeakel said.

Coauthor Paul Koch, a UCSC paleontologist who studies ancient ecosystems, helped formulate the team’s approach to using the records to look at the ecological ramifications of the changes in species occurrences. Yeakel teamed up with ecological modelers Mathias Pires of the University of Sao Paolo, Brazil, and Lars Rudolf of the University of Bristol, U.K., to do a computational analysis of the dynamics of predator-prey networks in the ancient Egyptian animal communities.

The researchers identified five episodes over the past 6,000 years when dramatic changes occurred in Egypt’s mammalian community, three of which coincided with extreme environmental changes as the climate shifted to more arid conditions. These drying periods also coincided with upheaval in human societies, such as the collapse of the Old Kingdom around 4,000 years ago and the fall of the New Kingdom about 3,000 years ago.

“There were three large pulses of aridification as Egypt went from a wetter to a drier climate, starting with the end of the African Humid Period 5,500 years ago when the monsoons shifted to the south,” Yeakel said. “At the same time, human population densities were increasing, and competition for space along the Nile Valley would have had a large impact on animal populations.”

The most recent major shift in mammalian communities occurred about 100 years ago. The analysis of predator-prey networks showed that species extinctions in the past 150 years had a disproportionately large impact on ecosystem stability. These findings have implications for understanding modern ecosystems, Yeakel said.

“This may be just one example of a larger pattern,” he said. “We see a lot of ecosystems today in which a change in one species produces a big shift in how the ecosystem functions, and that might be a modern phenomenon. We don’t tend to think about what the system was like 10,000 years ago, when there might have been greater redundancy in the community.”

 

Journal Reference:

  1. Justin D. Yeakel, Mathias M. Pires, Lars Rudolf, Nathaniel J. Dominy, Paul L. Koch, Paulo R. Guimarães, Jr., and Thilo Gross. Collapse of an ecological network in Ancient Egypt. PNAS, September 8, 2014 DOI: 10.1073/pnas.1408471111

Atmospheric mercury review raises concerns of environmental impact (Science Daily)

Date: August 28, 2014

Source: University of Arkansas at Little Rock

Summary: The cycling of mercury through soil and water has been studied as it impacts atmospheric loadings, researchers report. Recent studies that show increasing levels of mercury in the ocean’s upper levels, along with news reports of Arkansas lakes as a hotspot for mercury in fish, have heightened awareness of the potential harm mercury poses. 


The professor and chair of the University of Arkansas at Little Rock Department of Chemistry has recently completed an in-depth review of atmospheric mercury in Energy and Emissions Control Technologies, an open access peer-review journal published by Dove Press.

Dr. Jeffrey S. Gaffney and his co-author Nancy A. Marley stressed in their article the many forms that atmospheric mercury takes and how its levels are in balance with mercury levels found in our water, soil, and the biosphere.

Recent studies that show increasing levels of mercury in the ocean’s upper levels, along with news reports of Arkansas lakes as a hotspot for mercury in fish, have heightened awareness of the potential harm mercury poses.

The article, titled “In-depth review of atmospheric mercury: sources, transformations, and potential sink,” has seen extensive online traffic since it was first published Aug. 6.

Gaffney said the high volume of page visits was likely tied to the recent news concerning the rising levels of mercury in the oceans. Mercury is a toxic, heavy metal found naturally throughout the global environment.

Increased levels of mercury in the water could be caused by atmospheric deposition primarily in precipitation, something not usually considered when measuring mercury levels, according to the authors.

This timely review outlines the chemistry of mercury in gas, aqueous, and solid phases, including inorganic, organic, and complexed mercury species. The research particularly brings attention to the wet reaction of gaseous mercury with hydrogen peroxide that can occur in clouds and on wet aerosol surfaces.

The sources and fate of mercury in the atmosphere, including the cycling of mercury through soil and water as it impacts atmospheric loadings, are also examined in the review, as well as recommendations for future studies.

 

Journal Reference:

  1. Jeffrey Gaffney, Nancy Marley. In-depth review of atmospheric mercury: sources, transformations, and potential sinks. Energy and Emission Control Technologies, 2014; 1 DOI: 10.2147/EECT.S37038

Ciência a serviço da exploração da natureza e dos trabalhadores (Portal do Meio Ambiente)

PUBLICADO 30 JULHO 2014.

Mesa: A destruição tem preço? Pode-se confiar nas garantias da Ciência? Exploração petroleira (de Yasuni a Coari / Juruá); Mineração (de Carajás a Madre de Dios). Lindomar Padilha (CIMI); Barbara Silva (militante da comunicação comunitária na Pan Amazônia), Raimundo G. Neto (CEPASP/Movimento dos Atingidos por Mineração); Simeon Velarde (Vanguardia Amazónica-Peru), Ana Patrícia (COMIN)

Na manhã do dia 24 de julho, ocorreu a mesa com o tema “A destruição tem preço? Pode-se confiar nas garantias da Ciência? Exploração petroleira (de Yasuni a Coari / Juruá); Mineração (de Carajás a Madre de Dios).”

Barbara Silva, militante da comunicação comunitária na Pan-Amazônia, destacou a ação da Petrobrás na Amazônia Equatoriana e seus impactos na floresta e em comunidades equatorianas: “A Petrobrás age em outros países de um modo diferente. Ela faz no Equador, Bolívia e Colômbia o que ela não faz no Brasil: invade terras indígenas, frauda laudos técnicos, contamina água e solos, afetando a saúde e a economia de populações inteiras” .

Barbara Silva (militante da comunicação comunitária na Pan-Amazônia)

Silva ainda nos convoca a pensar a relação homem e natureza a partir de um termo que vai além da ideia de cuidar da natureza: “A austeridade imprime uma ação sobre o cuidado que é necessário a natureza. Pensar sobre o que queremos para a região amazônica é pensar no modo que vivemos. Consumir menos é uma ação individual que reflete nossa ação de cuidado com a natureza”, finalizou.

“Precisamos avançar é na ‘perda de inocência’, o Estado Brasileiro não é a favor do povo trabalhadores brasileiro, nem ontem, nem hoje.”, aponta Raimundo Neto (CEPASP/Movimento dos Atingidos por Mineração), após realizar um panorama das políticas e projetos de mineração no Pará.

Lindomar Padilha (CIMI); Simeon Velarde (Vanguardia Amazónica-Peru), Ana Patrícia (COMIN)

Simeon Velarde, da Vanguardia Amazónica-Peru, diz que a empresa petroleira Pluspetrol contamina os rios da amazônia peruana, mas diz que é de forma responsável. “O Peru é rico em matéria primas, em petróleo, gás, minério e essa realidade produz um crescimento econômico interessante para o país, mas esse crescimento não se redistribui socialmente. Eles dizem que vão fazer escolas, programas de inclusão de jovens, mas isso não acontece. O presidente vai aos meios de comunicações para defender essas empresas, pois com elas o país terá mais desenvolvimento, e segue mentindo à população”.

Fotos: Talita Oliveira

Fonte: ADUFAC.

Impact of Deepwater Horizon oil spill on coral is deeper and broader than predicted (Science Daily)

Date: July 28, 2014

Source: Penn State

Summary: A new discovery of two additional coral communities showing signs of damage from the Deepwater Horizon oil spill expands the impact footprint of the 2010 spill in the Gulf of Mexico.


A new discovery of two additional coral communities showing signs of damage from the Deepwater Horizon oil spill expands the impact footprint of the 2010 spill in the Gulf of Mexico. The discovery was made by a team led by Charles Fisher, professor of biology at Penn State University. A paper describing this work and additional impacts of human activity on corals in the Gulf of Mexico will be published during the last week of July 2014 in the online Early Edition of the journal Proceedings of the National Academy of Sciences. Several colonies of coral with attached anemones and brittle star from a previously discovered coral community 13 km from the spill site showing damage from the Deepwater Horizon oil spill. Corals from this community were used as models to identify damage from the oil spill in two newly discovered coral communities. The extensive brown growth on the normally gold-colored coral is not found on healthy colonies. Credit: Fisher lab, Penn State University

A new discovery of two additional coral communities showing signs of damage from the Deepwater Horizon oil spill expands the impact footprint of the 2010 spill in the Gulf of Mexico. The discovery was made by a team led by Charles Fisher, professor of biology at Penn State University.

A paper describing this work and additional impacts of human activity on corals in the Gulf of Mexico will be published during the last week of July 2014 in the online Early Edition of the Proceedings of the National Academy of Sciences.

“The footprint of the impact of the spill on coral communities is both deeper and wider than previous data indicated,” said Fisher. “This study very clearly shows that multiple coral communities, up to 22 kilometers from the spill site and at depths over 1800 meters, were impacted by the spill.”

The oil from the spill in the Gulf of Mexico has largely dissipated, so other clues now are needed to identify marine species impacted by the spill. Fisher’s team used the current conditions at a coral community known to have been impacted by the spill in 2010 as a model “fingerprint” for gauging the spill’s impact in newly discovered coral communities.

Unlike other species impacted by the spill whose remains quickly disappeared from the ocean floor, corals form a mineralized skeleton that can last for years after the organism has died. “One of the keys to coral’s usefulness as an indicator species is that the coral skeleton retains evidence of the damage long after the oil that caused the damage is gone,” said Fisher. The scientists compared the newly discovered coral communities with one they had discovered and studied around the time of the oil spill, using it as a model for the progression of damage caused by the spill over time. “We were able to identify evidence of damage from the spill in the two coral communities discovered in 2011 because we know exactly what our model coral colonies, impacted by the oil spill in 2010, looked like at the time we found the new communities.”

Corals are sparse in the deep waters of the Gulf of Mexico, but because they act as an indicator species for tracking the impact of environmental disasters like the Deepwater Horizon blowout, the effort to find them pays off in useful scientific data. “We were looking for coral communities at depths of over 1000 meters that are often smaller than the size of a tennis court,” said Fisher. “We needed high-resolution images of the coral colonies that are scattered across these communities and that range in size from a small houseplant to a small shrub.”

To begin the search, the team used 3D seismic data from the Bureau of Ocean Energy Management to identify 488 potential coral habitats in a 40 km radius around the spill site. From that list they chose the 29 sites they judged most likely to contain corals impacted by the spill. The team then used towed camera systems and Sentry, an autonomous underwater vehicle (AUV), which they programmed to autonomously travel back-and-forth across specific areas collecting images of the sites from just meters above the ocean floor. Finally, the team used a Shilling ultra-heavy-duty remote-operated vehicle (ROV), to collect high-resolution images of corals at the sites where they were discovered.

“With the cameras on board the ROV we were able to collect beautiful, high-resolution images of the corals,” said Fisher. “When we compared these images with our example of known oil damage, all the signs were present providing clear evidence in two of the newly discovered coral communities of the impact of the Deepwater Horizon oil spill.”

In searching for coral communities impacted by the Deepwater Horizon oil spill, the team also found two coral sites entangled with commercial fishing line. These additional discoveries serve as a reminder that the Gulf is being impacted by a diversity of human activities.

In addition to Fisher, the research team included Pen-Yuan Hsing, Samantha P. Berlet, Miles G. Saunders and Elizabeth A. Larcom from Penn State; Carl L. Kaiser, Dana R. Yoerger, and Timothy M. Shank from the Woods Hole Oceanographic Institution; Harry H. Roberts from Louisiana State University; William W. Shedd from the Bureau of Ocean Energy Management; Erik E. Cordes from Temple University; and James M. Brooks from TDI-Brooks International Inc.

The research was supported by the Assessment and Restoration Division of the National Oceanic and Atmospheric Administration (NOAA), the Gulf of Mexico Research Initiative funding to support the Ecosystem Impacts of Oil and Gas Inputs to the Gulf (ECOGIG) consortium administered by the University of Mississippi, and B P as part of the Deepwater Horizon Oil Spill Natural Resource Damage Assessment.

Journal Reference:

  1. Charles R. Fisher, Pen-Yuan Hsing, Carl L. Kaiser, Dana R. Yoerger, Harry H. Roberts, William W. Shedd, Erik E. Cordes, Timothy M. Shank, Samantha P. Berlet, Miles G. Saunders, Elizabeth A. Larcom, and James M. Brooks. Footprint of Deepwater Horizon blowout impact to deep-water coral communities.Proceedings of the National Academy of Sciences, 2014; DOI:10.1073/pnas.1403492111

Luxury cruise line accused of offering ‘environmental disaster tourism’ with high-carbon footprint Arctic voyage (The Independent)

Cruise passengers will pay upwards of £12,000 to see polar bears and humpback whales in their natural habitat – before it disappears

ADAM WITHNALL
Tuesday 29 July 2014

A luxury cruise operator in the US has announced it will offer a “once-in-a-lifetime” trip to experience the environmental devastation of the Arctic – using a mode of transport that emits three times more CO2 per passenger per mile than a jumbo jet.

It will be the first ever leisure cruise through the Northwest Passage, only accessible now because of the melting of polar ice, and is being marketed at those with an interest in witnessing the effects of climate change first-hand.

Tickets for the trip, scheduled for 16 August 2016 and organised by Crystal Cruises, will cost between $20,000 (£12,000) and $44,000.

Yet there is no mention on Crystal Cruises’ promotion or FAQ for the journey of the boat’s own carbon footprint.

Up to 1,070 passengers will be taken on the 32-day expedition to see seals, walruses, humpback whales and musk-ox – though the company admits there is “no guarantee” of catching a glimpse of a polar bear.

The bulk of the voyage will take place on the Crystal Serenity, a 68,000-ton, 13-deck ship, though it will also be accompanied by an escort vessel and a helicopter.

Popular Science described the trip as “environmental disaster tourism”, and quoted research which suggests that the carbon footprint of a cruise ship, per passenger per mile covered, is triple that of a Boeing 747 flight.

The company said passengers may be able to see endangered polar bears while on the cruise

The company said passengers may be able to see endangered polar bears while on the cruise

The cruise promotion was criticised by social media users for giving people the opportunity to “see/help ruin the environment”, “watch the ravages of global warming in person and become a human vulture” and take a “high-carbon-footprint cruise to watch polar bears drown”.

World Ocean Observatory wrote: “Is no place safe from our intrusion, waste, and consumption?”

In an FAQ on its website, Crystal Cruises said 14 experts would be accompanying guests on the cruise to give lectures about the impacts on the environment around them of climate change, as well as the “historic” nature of their inaugural journey down the Northern Passage.

Company executive Thomas Mazloum told the website GCaptain: “During this voyage, speakers will enlighten guests on information regarding climate change, and how it has impacted this passage.

“With the recent retreat of polar ice, the time is right for us to lead the way within the travel industry, as Crystal has done throughout our 25-year history.”

Under the heading of “Environmental” on its FAQ, Crystal Cruises said both the main ship and escort vessel would “voluntarily use Marine Gas Oil, a low-sulphur fuel… well in excess of the existing environmental regulations”.

Global wildlife decline driving slave labor, organized crime (Science Daily)

Date: July 24, 2014

Source: University of California – Berkeley

Summary: Global decline of wildlife populations is driving increases in violent conflicts, organized crime and child labor around the world, according to a experts. Researchers call for biologists to join forces with experts such as economists, political scientists, criminologists, public health officials and international development specialists to collectively tackle a complex challenge.


Global decline of wildlife populations is driving increases in violent conflicts, organized crime and child labor around the world, according to a policy paper led by researchers at the University of California, Berkeley. The authors call for biologists to join forces with experts such as economists, political scientists, criminologists, public health officials and international development specialists to collectively tackle a complex challenge.

The paper, to be published Thursday, July 24, in the journal Science, highlights how losses of food and employment from wildlife decline cause increases in human trafficking and other crime, as well as foster political instability.

“This paper is about recognizing wildlife decline as a source of social conflict rather than a symptom,” said lead author Justin Brashares, associate professor of ecology and conservation at UC Berkeley’s Department of Environmental Science, Policy and Management. “Billions of people rely directly and indirectly on wild sources of meat for income and sustenance, and this resource is declining. It’s not surprising that the loss of this critical piece of human livelihoods has huge social consequences. Yet, both conservation and political science have generally overlooked these fundamental connections.”

Fishing and the rise of piracy

Fewer animals to hunt and less fish to catch demand increasingly greater effort to harvest. Laborers — many of whom are children — are often sold to fishing boats and forced to work 18-20 hour days at sea for years without pay.

“Impoverished families are relying upon these resources for their livelihoods, so we can’t apply economic models that prescribe increases in prices or reduced demand as supplies become scarce,” said Brashares. “Instead, as more labor is needed to capture scarce wild animals and fish, hunters and fishers use children as a source of cheap labor. Hundreds of thousands of impoverished families are selling their kids to work in harsh conditions.”

The authors connected the rise of piracy and maritime violence in Somalia to battles over fishing rights. What began as an effort to repel foreign vessels illegally trawling through Somali waters escalated into hijacking fishing — and then non-fishing — vessels for ransom.

“Surprisingly few people recognize that competition for fish stocks led to the birth of Somali piracy,” said Brashares. “For Somali fishermen, and for hundreds of millions of others, fish and wildlife were their only source of livelihood, so when that was threatened by international fishing fleets, drastic measures were taken.”

The authors also compared wildlife poaching to the drug trade, noting that huge profits from trafficking luxury wildlife goods, such as elephant tusks and rhino horns, have attracted guerilla groups and crime syndicates worldwide. They pointed to the Lord’s Resistance Army, al-Shabab and Boko Haram as groups known to use wildlife poaching to fund terrorist attacks.

Holistic solutions required

“This paper begins to touch the tip of the iceberg about issues on wildlife decline, and in doing so the authors offer a provocative and completely necessary perspective about the holistic nature of the causes and consequences of wildlife declines,” said Meredith Gore, a Michigan State University associate professor in the nascent field of conservation criminology who was not part of the study.

As potential models for this integrated approach, the authors point to organizations and initiatives in the field of climate change, such as the Intergovernmental Panel on Climate Change, and the United for Wildlife Collaboration. But the paper notes that those global efforts must also be accompanied by multi-pronged approaches that address wildlife declines at a local and regional scale.

“The most important bit from this article, I think, is that we need to better understand the factors that underlie fish and wildlife declines from a local perspective, and that interdisciplinary approaches are likely the best option for facilitating this understanding,” said Gore.

The authors give examples of local governments heading off social tension, such as the granting of exclusive rights to hunting and fishing grounds to locals in Fiji, and the control of management zones in Namibia to reduce poaching and improve the livelihoods of local populations.

“This prescribed re-visioning of why we should conserve wildlife helps make clearer what the stakes are in this game,” said UC Santa Barbara assistant professor Douglas McCauley, a co-author who began this work as a postdoctoral researcher in Brashares’ lab. “Losses of wildlife essentially pull the rug out from underneath societies that depend on these resources. We are not just losing species. We are losing children, breaking apart communities, and fostering crime. This makes wildlife conservation a more important job than it ever has been.”

Journal Reference:

  1. J. S. Brashares, B. Abrahms, K. J. Fiorella, C. D. Golden, C. E. Hojnowski, R. A. Marsh, D. J. McCauley, T. A. Nunez, K. Seto, L. Withey. Wildlife decline and social conflict. Science, 2014; 345 (6195): 376 DOI: 10.1126/science.1256734

The Pricing of Everything (The Guardian)

The Natural Capital Agenda looks like an answer to the environmental crisis. But it’s a delusion.

By George Monbiot, published on the Guardian’s website, 24th July 2014

This is the transcript of George Monbiot’s SPERI Annual Lecture, hosted by the Sheffield Political Economy Research Institute at the University of Sheffield. The lecture was delivered without notes, and transcribed afterwards, so a few small changes have been made for readability, but it’s more or less as given. You can watch the video here.

“Ladies and gentlemen, we are witnessing the death of both the theory and the practice of neoliberal capitalism. This is the doctrine which holds that the market can resolve almost all social, economic and political problems. It holds that people are best served, and their prosperity is best advanced, by the minimum of intervention and spending by the state. It contends that we can maximise the general social interest through the pursuit of self-interest.

To illustrate the spectacular crashing and burning of that doctrine, let me tell you the sad tale of a man called Matt Ridley. He was a columnist on the Daily Telegraph until he became – and I think this tells us something about the meritocratic pretensions of neoliberalism – the hereditary Chair of Northern Rock: a building society that became a bank. His father had been Chair of Northern Rock before him, which appears to have been his sole qualification.

While he was a columnist on the Telegraph he wrote the following:

The government “is a self-seeking flea on the backs of the more productive people of this world. … governments do not run countries, they parasitize them.”(1) He argued that taxes, bail-outs, regulations, subsidies, interventions of any kind are an unwarranted restraint on market freedom. When he became Chairman of Northern Rock, Mr Ridley was able to put some of these ideas into practice. You can see the results today on your bank statements.

In 2007 Matt Ridley had to go cap in hand to the self-seeking flea and beg it for what became £27 billion. This was rapidly followed by the first run on a British bank since 1878. The government had to guarantee all the deposits of the investors in the bank. Eventually it had to nationalise the bank, being the kind of parasitic self-seeking flea that it is, in order to prevent more or less the complete collapse of the banking system(2).

By comparison to Mr Ridley, the likes of Paul Flowers, our poor old crystal Methodist, were pretty half-hearted. In fact about the only things which distinguish Mr Flowers from the rest of the banking fraternity were that a) he allegedly bought his own cocaine and b) he singularly failed to bring the entire banking system to its knees.

Where’s Mr Ridley now? Oh, we don’t call him Mr Ridley any more. He sits in the House of Lords as a Conservative peer. That, ladies and gentlemen, is how our system works.

It is not just that neoliberalism has failed spectacularly in that this creed – which was supposed to prevent state spending and persuade us that we didn’t need state spending – has required the greatest and most wasteful state spending in history to bail out the deregulated banks. But also that it has singularly failed to create the great society of innovators and entrepreneurs that we were promised by the originators of this doctrine, by people like Friedrich Hayek and Milton Friedman, who insisted that it would create a society of entrepreneurs.

As Thomas Piketty, a name which is on everybody’s lips at the moment, so adeptly demonstrates in his new book, Capital in the Twenty-first Century, what has happened over the past thirty years or so has been a great resurgence of patrimonial capitalism, of a rentier economy, in which you make far more money either by owning capital or by positioning yourself as a true self-serving flea upon the backs of productive people, a member of an executive class whose rewards are out of all kilter with its performance or the value it delivers(3). You make far more money in either of those positions than you possibly can through entrepreneurial activity. If wealth under this system were the inevitable result of hard work and enterprise, every woman in Africa would be a millionaire.

So just at this moment, this perfect moment of the total moral and ideological collapse of the neoliberal capitalist system, some environmentalists stumble across it and say, “This is the answer to saving the natural world.” And they devise a series of ideas and theories and mechanisms which are supposed to do what we’ve been unable to do by other means: to protect the world from the despoilation and degradation which have done it so much harm.

I’m talking about the development of what could be called the Natural Capital Agenda: the pricing, valuation, monetisation, financialisation of nature in the name of saving it.

Sorry, did I say nature? We don’t call it that any more. It is now called natural capital. Ecological processes are called ecosystem services because, of course, they exist only to serve us. Hills, forests, rivers: these are terribly out-dated terms. They are now called green infrastructure. Biodiversity and habitats? Not at all à la mode my dear. We now call them asset classes in an ecosystems market. I am not making any of this up. These are the names we now give to the natural world.

Those who support this agenda say, “Look, we are failing spectacularly to protect the natural world – and we are failing because people aren’t valuing it enough. Companies will create a road scheme or a supermarket – or a motorway service station in an ancient woodland on the edge of Sheffield – and they see the value of what is going to be destroyed as effectively zero. They weigh that against the money to be made from the development with which they want to replace it. So if we were to price the natural world, and to point out that it is really worth something because it delivers ecosystems services to us in the form of green infrastructure and asset classes within an ecosystems market (i.e. water, air, soil, pollination and the rest of it), then perhaps we will be able to persuade people who are otherwise unpersuadable that this is really worth preserving.”

They also point out that through this agenda you can raise a lot of money, which isn’t otherwise available for conservation projects. These are plausible and respectable arguments. But I think they are the road to ruin – to an even greater ruin than we have at the moment.

Let me try to explain why with an escalating series of arguments. I say escalating because they rise in significance, starting with the relatively trivial and becoming more serious as we go.

Perhaps the most trivial argument against the Natural Capital Agenda is that, in the majority of cases, efforts to price the natural world are complete and utter gobbledygook. And the reason why they are complete and utter gobbledygook is that they are dealing with values which are non-commensurable.

They are trying to compare things which cannot be directly compared. The result is the kind of nonsense to be found in the Natural Capital Committee’s latest report, published a couple of weeks ago(4). The Natural Capital Committee was set up by this Government, supposedly in pursuit of better means of protecting the natural world.

It claimed, for example, that if fresh water ecosystems in this country were better protected, the additional aesthetic value arising from that protection would be £700 million. That’s the aesthetic value: in other words, what it looks like. We will value the increment in what it looks like at £700 million. It said that if grassland and sites of special scientific interest were better protected, their wildlife value would increase by £40 million. The value of their wildlife – like the chalk hill blues and the dog violets that live on protected grasslands – would be enhanced by £40 million.

These figures, ladies and gentlemen, are marmalade. They are finely shredded, boiled to a pulp, heavily sweetened … and still indigestible. In other words they are total gibberish.

But they are not the worst I’ve come across. Under the last Government, the Department for Transport claimed to have discovered “the real value of time.” Let me read you the surreal sentence in which this bombshell was dropped. “Forecast growth in the real value of time is shown in Table 3.”(5) There it was, the real value of time – rising on a graph.

The Department for Environment, when it launched the National Ecosystem Assessment in 2011, came out with something equally interesting. It said it had established “the true value of nature for the very first time”(6). Unfortunately it wasn’t yet able to give us a figure for “the true value of nature”, but it did manage to provide figures for particular components of that value of nature. Let me give you just one of these. It said that if we looked after our parks and greens well they would enhance our well-being to the tune of £290 per household per year in 2060.

What does it mean? It maintained that the increment in well-being is composed of “recreation, health and solace”; natural spaces in which “our culture finds its roots and sense of place”; “shared social value” arising from developing “a sense of purpose” and being “able to achieve important personal goals and participate in society” enhanced by “supportive personal relationships” and “strong and inclusive communities”(7). So you put solace and sense of place and social value and personal goals and supportive personal relationships and strong and inclusive communities all together into one figure and you come out with £290 per household per year.

All we require now is for the Cabinet Office to give us a price for love and a true value for society and we will have a single figure for the meaning of life.

I know what you’re thinking: it’s 42(8). But Deep Thought failed to anticipate the advent of Strictly Come Dancing, which has depreciated the will to live to the extent that it’s now been downgraded to 41.

It is complete rubbish, and surely anyone can see it’s complete rubbish. Not only is it complete rubbish, it is unimprovable rubbish. It’s just not possible to have meaningful figures for benefits which cannot in any sensible way be measured in financial terms.

Now there are some things that you can do. They are pretty limited, but there are some genuinely commensurable pay-offs that can be assessed. So, for instance, a friend of mine asked me the other day, “What’s the most lucrative investment a land owner can make?”. I didn’t know. “An osprey! Look at Bassenthwaite in the Lake District where there’s a pair of ospreys breeding and the owners of the land have 300,000 people visiting them every year. They charge them for car parking and they probably make a million pounds a year.”

You can look at that and compare it to what you were doing before, such as rearing sheep, which is only viable because of farm subsidies: you actually lose money by keeping sheep on the land. So you can make a direct comparison because you’ve got two land uses which are both generating revenue (or losing revenue) that is already directly costed in pounds. I’ve got no problem with that. You can come out and say there is a powerful economic argument for having ospreys rather than sheep.

There are a few others I can think of. You can, for instance, look at watersheds. There is an insurance company which costed Pumlumon, the highest mountain in the Cambrian mountains, and worked out that it would be cheaper to buy Pumlumon and reforest it in order to slow down the flow of water into the lowlands than to keep paying out every year for carpets in Gloucester.

There were quite a few assumptions in there, as we don’t yet have all the hydrological data we need, but in principle you can unearth some directly commensurable values – the cost of insurance pay-outs, in pounds, versus the cost of buying the land, in pounds – and produce a rough ballpark comparison. But in the majority of cases you are not looking at anything remotely resembling financial commensurability.

So that is Problem One, and that is the most trivial of the problems.

Problem Two is that you are effectively pushing the natural world even further into the system that is eating it alive. Dieter Helm, the Chairman of the Natural Capital Committee, said the following in the same report I quoted from just a moment ago. “The environment is part of the economy and needs to be properly integrated into it so that growth opportunities will not be missed.”(9)

There, ladies and gentlemen, you have what seems to me the Government’s real agenda. This is not to protect the natural world from the depredations of the economy. It is to harness the natural world to the economic growth that has been destroying it. All the things which have been so damaging to the living planet are now being sold to us as its salvation; commodification, economic growth, financialisation, abstraction. Now, we are told, these devastating processes will protect it.

(Sorry, did I say the living planet? I keep getting confused about this. I meant asset classes within an ecosystem market.)

It gets worse still when you look at the way in which this is being done. Look at the government’s Ecosystems Markets Task Force, which was another of these exotic vehicles for chopping up nature and turning it into money. From the beginning it was pushing nature towards financialisation. It talked of “harnessing City financial expertise to assess the ways that these blended revenue streams and securitisations enhance the return on investment of an environmental bond.”(10) That gives you an idea of what the agenda is – as well as the amount of gobbledygook it is already generating.

What we are talking about is giving the natural world to the City of London, the financial centre, to look after. What could possibly go wrong? Here we have a sector whose wealth is built on the creation of debt. That’s how it works, on stacking up future liabilities. Shafting the future in order to serve the present: that is the model. And then that debt is sliced up into collateralised debt obligations and all the other marvellous devices that worked so well last time round.

Now nature is to be captured and placed in the care of the financial sector, as that quote suggests. In order for the City to extract any value from it, the same Task Force says we need to “unbundle” ecosystem services so they can be individually traded(11).

That’s the only way in which it can work – this financialisation and securitisation and bond issuing and everything else they are talking about. Nature has to be unbundled. If there is one thing we know about ecosystems, and we know it more the more we discover about them, it’s that you cannot safely disaggregate their functions without destroying the whole thing. Ecosystems function as coherent holistic systems, in which the different elements depend upon each other. The moment you start to unbundle them and to trade them separately you create a formula for disaster.

Problem Three involves what appears to be a very rude word, because hardly anyone uses it, certainly not in polite society. It begins with a ‘p’ and it’s five letters long and most people seem unable to utter it. It is, of course, power.

Power is the issue which seems to get left out of the Natural Capital Agenda. And because it gets left out, because it it is, I think, deliberately overlooked, what we are effectively seeing is the invocation of money as a kind of fairy dust, that you sprinkle over all the unresolved problems of power in the hope that they will magically resolve themselves. But because they are unresolved, because they are unaddressed, because they aren’t even acknowledged; the natural capital agenda cannot possibly work.

Let me give you an example of a system which doesn’t work because of this problem, despite high commensurability, simple and straightforward outputs and a simple and straightforward monitoring system. That is the European Emissions Trading System, which seeks to reduce carbon emissions by creating a carbon price.

I am not inherently opposed to it. I can see it is potentially as good a mechanism as any other for trying gradually to decarbonise society. But it has failed. An effective price for carbon begins at about £30 a ton. That is the point at which you begin to see serious industrial change and the disinvestment in fossil fuels we so desperately need to see.

Almost throughout the history of the European Emissions Trading System, the price of carbon has hovered around five Euros. That is where it is today. The reason is an old-fashioned one. The heavily polluting industries, the carbon-intensive industries, which were being asked to change their practices, lobbied the European Union to ensure that they received an over-allocation of carbon permits. Far too many permits were issued. When the European Parliament started talking about withdrawing some of those permits, it too was lobbied and it caved in and failed to withdraw them. So the price has stayed very low.

What we see here is the age-old problem of power. Governments and the Commission are failing to assert political will. They are failing to stand up for themselves and say, “This is how the market is going to function. It is not going to function without a dirigiste and interventionist approach.” Without that dirigiste and interventionist approach we end up with something which is almost entirely useless. In fact worse than useless because I don’t think there has been a single coal-burning power station, motorway or airport in the European Union approved since the ETS came along, which has not been justified with reference to the market created by the trading system.

You haven’t changed anything by sprinkling money over the problem, you have merely called it something new. You have called it a market as opposed to a political system. But you still need the regulatory involvement of the state to make that market work. Because we persuade ourselves that we don’t need it any more because we have a shiny new market mechanism, we end up fudging the issue of power and not addressing those underlying problems.

Let me give you another example: The Economics of Ecosystems and Biodiversity project, overseen by Pavan Sukhdev from Deutsche Bank. This huge exercise came up with plenty of figures, most of which I see as nonsense. But one or two appeared to be more more plausible. Among the most famous of these was its valuation of mangrove forests. It maintained that if a businessman or businesswoman cuts down a mangrove forest and replaces it with a shrimp farm, that will be worth around $1,200 per hectare per year to that person. If we leave the mangrove forest standing, because it protects the communities who live on the coastline and because it is a wonderful breeding ground for fish and crustaceans, it will be worth $12,000 per hectare per year(12). So when people see the figures they will conclude that it makes sense to save the mangrove forests, and hey presto, we have solved the problem. My left foot!

People have known for centuries the tremendous benefits that mangrove forests deliver. But has that protected them from being turned into shrimp farms or beach resorts? No, it hasn’t. And the reason it hasn’t is that it might be worth $12,000 to the local impoverished community of fisher folk, but if it’s worth $1,200 to a powerful local politician who wants to turn it into shrimp farms, that counts for far more. Putting a price on the forest doesn’t in any way change that relationship.

You do not solve the problem this way. You do not solve the problem without confronting power. But what we are doing here is reinforcing power, is strengthening the power of the people with the money, the power of the economic system as a whole against the power of nature.

Let me give you one or two examples of that. Let’s start on the outskirts of Sheffield with Smithy Wood. This is an ancient woodland, which eight hundred years ago was recorded as providing charcoal for the monks who were making iron there. It is an important part of Sheffield’s history and culture. It is full of stories and a sense of place and a sense of being able to lose yourself in something different. Someone wants to turn centre of Smithy Wood into a motorway service station(13).

This might have been unthinkable until recently. But it is thinkable now because the government is introducing something called biodiversity offsets. If you trash a piece of land here you can replace its value by creating some habitat elsewhere. This is another outcome of the idea that nature is fungible and tradeable, that it can be turned into something else: swapped either for money or for another place, which is said to have similar value.

What they’ve said is, “We’re going to plant 60,000 saplings, with rabbit guards around them, in some other place, and this will make up for trashing Smithy Wood.” It seems to me unlikely that anyone would have proposed trashing this ancient woodland to build a service station in the middle of it, were it not for the possibility of biodiversity offsets. Something the Government has tried to sell to us as protecting nature greatly threatens nature.

Let me give you another example. Say we decide that we’re going to value nature in terms of pounds or dollars or euros and that this is going to be our primary metric for deciding what should be saved and what should not be saved. This, we are told, is an empowering tool to protect the natural world from destruction and degradation. Well you go to the public enquiry and you find that, miraculously, while the wood you are trying to save has been valued at £x, the road, which they want to build through the wood, has been valued at £x+1. And let me tell you, it will always be valued at £x+1 because cost benefit analyses for such issues are always rigged.

The barrister will then be able to say, “Well there you are, it is x+1 for the road and x for the wood. End of argument.” All those knotty issues to do with values and love and desire and wonder and delight and enchantment, all the issues which are actually at the centre of democratic politics, are suddenly ruled out. They are outside the box, they are outside the envelope of discussion, they no longer count. We’ve been totally disempowered by that process.

So that was Problem Three. But the real problem, and this comes to the nub of the argument for me, is over the issues which I will describe as values and framing. Am I allowed to mention Sheffield Hallam? Too late. In response to an article I wrote that was vaguely about this issue last week, Professor Lynn Crowe from Sheffield Hallam University wrote what I thought was a very thoughtful piece(14). She asked this question: “How else can we address the challenge of convincing those who do not share the same values as ourselves of our case?”.

In other words, we are trying to make a case to people who just don’t care about the natural world. How do we convince them, when they don’t share those values, to change their minds? To me the answer is simple. We don’t.

We never have and we never will. That is not how politics works. Picture a situation where Ed Miliband stands up in the House of Commons and makes such a persuasive speech that David Cameron says, “You know, you’ve completely won me over. I’m crossing the floor and joining the Labour benches.”

That’s not how it works. That is not how politics has ever proceeded, except in one or two extremely rare cases. You do not win your opponents over. What you do to be effective in politics is first, to empower and mobilise people on your own side and secondly, to win over the undecided people in the middle. You are not going to win over the hard core of your opponents who are fiercely opposed to your values.

This is the horrendous mistake that New Labour here and the Democratic Party in the United States have made. “We’ve got to win the next election so we’ve got to appease people who don’t share our values, so we’re going to become like them. Instead of trying to assert our own values, we are going to go over to them and say, ‘Look, we’re not really red; we’re not scary at all. We are actually conservatives.’” That was Tony Blair’s message. That was Bill Clinton’s message. That, I’m afraid, is Barack Obama’s message.

Triangulation possibly won elections – though in 1997 a bucket on a stick would have won – but it greatly eroded the Labour vote across the intervening years. We’ve ended up with a situation where there are effectively no political alternatives to the neoliberalism being advanced by the coalition government. In which the opposition is, in almost every case, failing to oppose. It is in this position because it has progressively neutralised itself by trying to appease people who do not share its values.

As George Lakoff, the cognitive linguist who has done so much to explain why progressive parties keep losing the elections that they should win and keep losing support even in the midst of a multiple crisis caused by their political opponents, points out, you can never win by adopting the values of your opponents(15).

You have to leave them where they are and project your own values to people who might be persuaded to come over to your side. That is what conservatives have done on both sides of the Atlantic. They have been extremely good at it, especially in the United States, where they have basically crossed their arms and said, “We’re over here and we don’t give a damn about where you are. We don’t care about what you stand for, you hippies on the Left. This is what we stand for and we are going to project it, project it, project it, until the electoral arithmetic our stance creates means that you have to come to us.”

So what we’ve got there is a Democratic Party that is indistinguishable from where the Republicans were ten years ago. It has gone so far to the right that it has lost its core values. I think you could say the same about the Labour Party in this country.

This, in effect, is what we are being asked to do through the natural capital agenda. We are saying “because our opponents don’t share our values and they are the people wrecking the environment, we have to go over to them and insist that we’re really in their camp. All we care about is money. We don’t really care about nature for its own sake. We don’t really believe in any of this intrinsic stuff. We don’t believe in wonder and delight and enchantment. We just want to show that it’s going to make money.”

In doing so, we destroy our own moral authority and legitimacy. In a recent interview George Lakoff singled out what he considered to be the perfect example of the utter incompetence of progressives hoping to defend the issues they care about. What was it? The Natural Capital Agenda(16).

As Lakoff has pointed out, these people are trying to do the right thing but they are completely failing to apply a frames analysis. A frame is a mental structure through which you understand an issue. Instead of framing the issue with our own values and describing and projecting our values – which is the only thing in the medium- to long-term that ever works – we are abandoning them and adopting instead the values of the people who are wrecking the environment. How could there be any long-term outcome other than more destruction?

There’s another way of looking at this, which says the same thing in a different ways. All of us are somewhere along a spectrum between intrinsic values and extrinsic values. Extrinsic values are about reputation and image and money. They’re about driving down the street in your Ferrari and showing it to everyone. They are about requiring other people’s approbation for your own sense of well-being.

Intrinsic values are about being more comfortable with yourself and who you are. About being embedded in your family, your community, among your friends, and not needing to display to other people in order to demonstrate to yourself that you are worth something(17).

Research in seventy countries produces remarkably consistent results: these values are highly clustered(18). So, for instance, people who greatly value financial success tend to have much lower empathy than those with a strong sense of intrinsic values. They have much less concern about the natural world, they have a stronger attraction towards hierarchy and authority. These associations are very strongly clustered.

But we are not born with these values. They are mostly the product of our social and political environment. What the research also shows is that if you change that environment, people’s values shift en masse with that change. For instance, if you have a good, functioning public health system where no one is left untreated, that embeds and imbues among the population a strong set of intrinsic values. The subliminal message is “I live in a society where everyone is looked after. That must be a good thing because that is the society I live in.” You absorb and internalise those values.

If on the other hand you live in a devil-take-the-hindmost society where people, as they do in the United States, die of treatable conditions because they cannot afford medical care, that will reinforce extrinsic values and push you further towards that end of the spectrum. The more that spectrum shifts, the more people’s values shift with it.

People on the right understand this very well. Mrs Thatcher famously said, “Economics are the method; the object is to change the heart and soul.”(19) She understood the political need to change people’s values – something the left has seldom grasped.

If we surrender to the financial agenda and say, “This market-led neoliberalism thing is the way forward,” then we shift social values. Environmentalists are among the last lines of defence against the gradual societal shift towards extrinsic values. If we don’t stand up and say, “We do not share those values, our values are intrinsic values. We care about people. We care about the natural world. We are embedded in our communities and the people around us and we want to protect them, not just ourselves. We are not going to be selfish. This isn’t about money”, who else is going to do it?

So you say to me, “Well what do we do instead? You produce these arguments against trying to save nature by pricing it, by financialisation, by monetisation. What do you do instead?”

Well, ladies and gentlemen, it is no mystery. It is the same answer that it has always been. The same answer that it always will be. The one thing we just cannot be bothered to get off our bottoms to do, which is the only thing that works. Mobilisation.

It is the only thing that has worked, the only thing that can work. Everything else is a fudge and a substitute and an excuse for not doing that thing that works. And that applies to attempts to monetise and financialise nature as much as it does to all the other issues we are failing to tackle. Thank you.”

http://www.monbiot.com

References:

1. Matt Ridley, 22nd July 1996. Power to the people: we can’t do any worse than government. The Daily Telegraph.

2. http://www.theguardian.com/commentisfree/2010/may/31/state-market-nothern-rock-ridley

3. http://www.hup.harvard.edu/catalog.php?isbn=9780674430006

4. http://nebula.wsimg.com/d512efca930f81a0ebddb54353d9c446?AccessKeyId=68F83A8E994328D64D3D&disposition=0&alloworigin=1

5. http://www.persona.uk.com/bexhill/HA_DOCS/HA-05.pdf

6. http://www.defra.gov.uk/news/2011/06/02/hidden-value-of-nature-revealed/

7. http://uknea.unep-wcmc.org/LinkClick.aspx?fileticket=ryEodO1KG3k%3d&tabid=82

8. http://www.bbc.co.uk/cult/hitchhikers/guide/answer.shtml

9. http://nebula.wsimg.com/d512efca930f81a0ebddb54353d9c446?AccessKeyId=68F83A8E994328D64D3D&disposition=0&alloworigin=1

10. http://webarchive.nationalarchives.gov.uk/20130822084033/http://www.defra.gov.uk/ecosystem-markets/files/EMTF-VNN-STUDY-FINAL-REPORT-REV1-14.06.12.pdf

11. http://webarchive.nationalarchives.gov.uk/20130822084033/http://www.defra.gov.uk/ecosystem-markets/files/EMTF-VNN-STUDY-FINAL-REPORT-REV1-14.06.12.pdf

12. http://www.unep.org/documents.multilingual/default.asp?DocumentID=602&ArticleID=6371&l=en&t=long

13. http://www.sheffieldmotorwayservices.co.uk/

14. http://lynncroweblog.wordpress.com/category/valuing-nature/

15. George Lakoff, 2004. Don’t think of an elephant!: know your values and frame the debate. Chelsea Green, White River Junction, VT, USA.

16. http://www.theguardian.com/books/2014/feb/01/george-lakoff-interview

17. http://assets.wwf.org.uk/downloads/common_cause_report.pdf

18. http://assets.wwf.org.uk/downloads/common_cause_report.pdf

19. http://www.margaretthatcher.org/document/104475

Edição especial da Science alerta para 6º Grande Extinção (Carbono Brasil)

28/7/2014 – 11h10

por Fernanda B. Müller, do CarbonoBrasil

Vanishing Fauna Edição especial da Science alerta para 6º Grande Extinção

Em uma coletânea de estudos sobre a crise e os desafios do imenso número de extinções causadas pelos humanos, revista ressalta as implicações da ‘defaunação’ dos ecossistemas.

A triste conclusão de que as nossas florestas, além de estarem em um processo contínuo de desmatamento, estão vazias, cada vez mais depauperadas da vida que as constitui, é o foco de uma série especial da revista Science.

A publicação chama a atenção para um termo que deve se tornar cada vez mais conhecido, a ‘defaunação’: a atual biodiversidade animal, produto de 3,5 bilhões de anos de evolução, apesar da extrema riqueza, está decaindo em níveis que podem estar alcançando um ponto sem volta.

Segundo cientistas, tal perda parece estar contribuindo com o que classificam como o início do sexto evento de extinção biológica em massa – ao contrário dos outros, que tiveram causas naturais, nós seríamos os culpados, devido às chamadas atividades antrópicas.

“Muito permanece desconhecido sobre a ‘defaunação do antropoceno’; essas brechas no conhecimento prejudicam a nossa capacidade de prever e limitar os seus impactos. Porém, claramente, a defaunação é tanto um componente perverso da sexta extinção em massa do planeta quanto uma grande causadora da mudança ecológica global”, concluíram pesquisadores no artigo ‘Defaunação no Antropoceno‘.

Na abertura da revista, um dos editores, Sacha Vignieri, lembra que, há alguns milhares de anos, o planeta servia de lar para espetaculares animais de grande porte, como mamutes, tartarugas gigantes, tigres-dente-de-sabre, entre outros.

Porém, evidências apontam o ser humano como o grande culpado pelo desaparecimento desses animais, afirma o editor.

E infelizmente, a tendência parece longe de mudar, e com ela, toda uma série de funções dos ecossistemas, das quais depende a nossa vida, são alteradas de formas dramáticas.

Como mostram os artigos na Science, os impactos da perda da fauna vão desde o empobrecimento da cobertura vegetal até a redução na produção agrícola devido à falta de polinizadores, passando pelo aumento de doenças, a erosão do solo, os impactos na qualidade da água, entre outros. Ou seja, os efeitos da perda de uma única espécie são sistêmicos.

MacacoCR Edição especial da Science alerta para 6º Grande ExtinçãoNúmeros

De acordo com o estudo ‘Defaunação no Antropoceno‘, as populações de vertebrados declinaram em uma média de mais de um quarto nos últimos quarenta anos. Isso fica extremamente evidente quando qualquer um de nós caminha nos remanescentes de Mata Atlântica: é realmente muito difícil encontrar animais de médio e grande portes.

Pelo menos 322 espécies de vertebrados foram extintas desde 1500, e esse número só não é maior porque não conhecemos todas as espécies que já habitaram ou ainda residem em nossas florestas.

Se a situação é complicada para os vertebrados, que são muito mais conhecidos, é angustiante imaginar o tamanho da crise para os invertebrados, como os insetos, muito menos estudados.

“Apesar de menos de 1% das 1,4 milhão de espécies de invertebrados descritas terem sido avaliadas quanto à ameaça pela IUCN, das analisadas, cerca de 40% são consideradas ameaçadas”, afirma o estudo.

Solução?

Certamente, a resolução dessa crise do Antropoceno não é simples.

As causas dessas perdas são bem conhecidas – caça, fragmentação dos habitats, uso de agrotóxicos, poluição, etc. –, e as tentativas para reverter essas tendências estão aumentando, como a reintrodução da fauna.

araraFACostaR Edição especial da Science alerta para 6º Grande ExtinçãoNo artigo ‘Revertendo a defaunação: restaurando espécies em um mundo mutante’, pesquisadores revisam uma série de translocações conservacionistas, como o reforço, a reintrodução e métodos mais controversos que buscam restaurar populações fora do seu habitat natural ou substituir espécies extintas.

Os autores escrevem que a meta mais tradicional, de ter populações selvagens autosustentadas em paisagens pristinas intocadas pela influência humana, é “cada vez mais inalcançável”. Assim, eles sugerem que criar a “selva”, em vez de restaurá-la, é o caminho mais prático para avançar.

Entretanto, os desafios para reverter as extinções estão se mostrando muito desafiadores, e as pesquisas atuais mostram que, “se não conseguirmos acabar ou reverter as taxas dessas perdas, significará mais para o nosso futuro do apenas que corações desiludidos ou uma floresta vazia”, disse Vignieri, o editor do especial na Science.

Rodolfo Dirzo, professor da Universidade de Stanford – um dos autores de Defaunação no Antropoceno –, argumenta que reduzir imediatamente as taxas de alteração dos habitats e a sobre-exploração ajudaria, mas que isso precisaria ser feito de acordo com as características de cada região e situação.

Ele espera que a sensibilização sobre a atual extinção em massa e suas consequências ajude a desencadear mudanças.

“Os animais importam para as pessoas, mas no equilíbrio, eles importam menos do que a alimentação, emprego, energia, dinheiro e desenvolvimento. Enquanto continuarmos a enxergar os animais nos ecossistemas como tão irrelevantes para essas necessidades básicas, os animais perderão”, disseram Joshua Tewksbury e Haldre Rogers no artigo “Um futuro rico em animais”.

* Publicado originalmente no site CarbonoBrasil.

(CarbonoBrasil)

*   *   *

Pesquisadores alertam para riscos da defaunação promovida pelo homem (Fapesp)

28/07/2014

Agência FAPESP – A revista científica norte-americana Scienceacaba de publicar uma edição especial sobre as consequências do desaparecimento de espécies animais para a biodiversidade do planeta e para o próprio futuro da humanidade.

“Durante o Pleistoceno, apenas dezenas de milhares de anos atrás, nosso planeta sustentava animais grandes e espetaculares. Mamutes, ‘aves do terror’, tartarugas gigantes e tigres-dentes-de-sabre, bem como espécies muito menos conhecidas, como preguiças gigantes (algumas das quais chegavam a 7 metros de altura) e gliptodontes (que pareciam tatus do tamanho de automóveis), vagavam livremente”, diz a introdução do especial.

“Desde então, no entanto, o número e a diversidade de espécies animais na Terra têm declinado consistente e firmemente. Hoje, ficamos com uma fauna relativamente depauperada e continuamos a ver a rápida extinção de espécies animais. Embora algum debate persista, a maioria das evidências sugere que os seres humanos foram responsáveis pela extinção dessa fauna do Pleistoceno, e continuamos a induzir extinções de animais por meio da destruição de terras selvagens, da caça para consumo ou como luxo e da perseguição de espécies que vemos como ameaças ou concorrentes”, destaca o texto.

O especial traz artigos em que pesquisadores de diversos países citam espécies animais que estão desaparecendo, os complexos fatores por trás do processo de defaunação e as dificuldades para colocar em prática alternativas eficazes de conservação.

Um dos artigos do especial, Defaunation in the Anthropocene, tem entre seus autores o professor Mauro Galetti, do Departamento de Ecologia da Universidade Estadual Paulista (Unesp), campus de Rio Claro, responsável por projetos de pesquisa que integram o programa BIOTA-FAPESP.

O artigo de Galetti, produzido em colaboração com pesquisadores dos Estados Unidos, do México e do Reino Unido, ressalta que o mundo está passando por uma das maiores extinções de animais em sua história.

De acordo com os autores, a onda global de perda de biodiversidade tem a ação humana como principal causadora. Mas os impactos humanos sobre a biodiversidade animal representam uma forma ainda não reconhecida de mudanças ambientais globais.

“Dos vertebrados terrestres, 322 espécies se tornaram extintas desde 1500, e populações das espécies restantes mostram declínio médio de 25% em abundância”, dizem os autores.

“Tais declínios animais impactarão o funcionamento de ecossistemas e o bem-estar humano. Muito permanece desconhecido sobre a ‘defaunação antropocênica’. Essas lacunas de conhecimento dificultam a nossa capacidade de prever e limitar os impactos da defaunação. Claramente, no entanto, a defaunação é tanto um componente pervasivo da sexta extinção em massa do planeta como também um grande condutor de mudança ecológica global”, destacam.

Segundo Galetti e colegas, de todas as espécies animais atuais – estimadas entre 5 milhões e 9 milhões –, o mundo perde anualmente entre 11 mil e 58 mil espécies. E isso não inclui os declínios de abundância animal entre populações, ou seja, de espécies que agonizam lentamente.

“A ciência tem se preocupado com o impacto das extinções das espécies, mas o problema também envolve a extinção local de populações. Algumas espécies podem não estar globalmente ameaçadas mas podem estar extintas localmente. Essa extinção local de animais afeta o funcionamento dos ecossistemas naturais vitais ao homem. Nesse trabalho agora publicado, compilamos dados populacionais de grandes mamíferos, como rinocerontes, gorilas e leões, e também de invertebrados, como borboletas. Uma em cada quatro espécies de vertebrados tem suas populações reduzidas”, disse Galetti, em entrevista ao site da Unesp.

“A maioria dos pesquisadores analisa os efeitos humanos sobre a extinção das espécies e, nesse trabalho, nós enfocamos a extinção local de populações. A extinção de uma espécie tem um grande impacto, e a redução das populações animais causa um impacto maior ainda nos ecossistemas”, disse.

Itália enfrenta invasão de javalis radioativos quase 30 anos após Chernobyl (UOL)

Patrícia Araújo

Do UOL, em Roma

28/07/201406h00

Quase trinta anos após o desastre da usina de Chernobyl (Ucrânia), a maior tragédia radioativa da história continua a causar graves problemas na Europa e a deixar a população em alerta. Desta vez, o alarme foi soado em uma zona de caça livre no norte da Itália. Após um ano de pesquisas, o Instituto Zooprofilático Experimental de Piemonte, Ligúria e Valle d’Aosta – entidade ligada ao governo regional – divulgou a presença de traços de césio-137 acima dos limites permitidos pela União Européia em dezenas de javalis encontrados na província piemontesa de Verbano-Cusio-Ossola, especialmente na pequena comunidade de Valsesia. A carne do javali seria consumida pelos caçadores.

O instituto começou a investigar a área com maior rigor em março de 2013, após a descoberta de 27 animais contaminados. Em pouco mais de um ano, foram analisados 1.441 porcos selvagens e a constatação foi a de que mais de 10% da população (166 javalis) apresentam índice de radioatividade superior a 600 becquerel/quilo, limite máximo permitido pela UE em animais selvagens. O becquerel é a unidade usada internacionalmente para mediação de radioatividade.

Embora não tenha revelado precisamente o nível de radiação encontrado nos animais de Vasesia, Maria Caramelli, diretora do instituto, afirmou que as análises apresentaram traços de césio-137 “significativamente superiores” ao permitido pela comunidade europeia.

Nuvem radioativa

De acordo com a instituição, a contaminação dos javalis é consequência ainda da nuvem radioativa provocada pela explosão de Chernobyl em 1986. Nos dias decorrentes ao desastre, a nuvem se espalhou por dezenas de países da Europa. Na Itália, um mapeamento feito pelo CCR (Centro Comum de Pesquisa da União Européia) constatou que as regiões mais afetadas foram Lombardia e Piemonte. Fortes chuvas atingiram essas áreas naquele período fazendo com que o césio penetrasse maciçamente maciçamente no solo.

A atual propagação da substância radioativa entre a população de porcos selvagens, e não em outros animais, pode ser consequência dos hábitos alimentares dos javalis. Como eles se nutrem principalmente de raízes, escavam camadas profundas do solo em busca do alimento, expondo-se assim à radiação. Além disso, as raízes são por si próprias grandes concentradoras de radiatividade.

Após a descoberta, o instituto zooprofilático emitiu um alerta pedindo maior controle na zona de caça da província de Verbano-Cusio-Ossola. Atualmente, o Piemonte possui um plano de monitoramento da carne proveniente da caça na região. Porém, a fiscalização não atinge a totalidade dos animais abatidos em zonas selvagens antes de serem consumidos.

Índices subestimados

Para Massimo Bonfatti, coordenador na Itália do Projeto Humus, que trabalha com políticas de contenção de contaminação em áreas atingidas por radioatividade, a situação é ainda mais grave do que parece. Segundo o médico, dois fatores não estão sendo levados em consideração para avaliar precisamente o quadro. O primeiro deles seria a análise exclusiva de somente um isótopo radioativo.

“Um problema grave é que o índice de validação de contaminação na Europa é feito só com o césio-137, mas a nuvem que foi liberada por Chernobyl era cheia de outros elementos em proporções diversas. Não conseguimos nunca ter, por exemplo, o resultado da contaminação no norte da Itália por césio-134, que também pode causar sérios danos”.

Além disso, segundo o coordenador, o valor permitido de radiação de 600 becquerel por quilo de carne é extremamente elevado. “É complicado, mas estamos trabalhando na elaboração de uma proposta de projeto de lei para baixar esse índice para 10 bq/kg”

Maior rigor

Ainda de acordo com Bonfatti, os danos causados à saúde humana por contaminação radioativa são gigantescos. “Nós sustentamos que a grande epidemia de câncer que existe no mundo é provavelmente consequência da radiação que foi liberada do pós-guerra até hoje no planeta. Além disso, estudos já revelaram que o césio-137 se liga às fibras do coração provocando o surgimento de graves patologias cardíacas.”

A reportagem do UOL entrou em contato com as assessorias do governo da região do Piemonte e do Ministério da Saúde italiano para saber quais providências devem ser tomadas após a divulgação do estudo. A administração regional informou que o Instituto Zooprofilático Experimental é o único “ente responsável pela solução de casos do gênero” na área e que, portanto, apenas ele pode falar sobre o assunto. Já o Ministério da Saúde, embora tenha sido procurado diversas vezes ao longo da última semana, não se pronunciou até a publicação desta reportagem.

Dahr Jamail | The Brink of Mass Extinction (Truthout)

Monday, 21 July 2014 09:24

By Dahr Jamail, Truthout | News Analysis

Brink of extinction(Image: Polluted dawnice bergs via Shutterstock; Edited: JR/TO)

“We do not inherit the earth from our ancestors; we borrow it from our children.”
 – Native American proverb

March through June 2014 were the hottest on record globally, according to the Japan Meteorological Agency. In May – officially the hottest May on record globally – the average temperature of the planet was .74 degrees Celsius above the 20th century baseline, according to data from the National Oceanic and Atmospheric Administration. The trend is clear: 2013 was the 37th consecutive year of above-average global temperatures, and since the Industrial Revolution began, the earth has been warmed by .85 degrees Celsius. Several scientific reports and climate modeling show that at current trajectories (business as usual), we will see at least a 6-degree Celsius increase by 2100.

In the last decade alone, record high temperatures across the United States have outnumbered record low temperatures two to one, and the trend is both continuing and escalating.

While a single extreme weather event is not proof of anthropogenic climate disruption (ACD), the increasing intensity and frequency of these events are. And recent months have seen many of these.

A record-breaking heat wave gripped India in June, as temperatures hovered at 46 degrees Celsius, sometimes reaching 48 degrees Celsius. Delhi’s 22 million residents experienced widespread blackouts and rioting, as the heat claimed hundreds of lives.

Also in June, Central Europe cooked in unseasonably extreme heat, with Berlin experiencing temperatures over 32 degrees Celsius, which is more than 12 degrees hotter than normal.

At the same time, at least four people died in Japan, and another 1,637 were hospitalized as temperatures reached nearly 38 degrees Celsius.

NASA is heightening its efforts to monitor ACD’s impacts on the planet; recently, it launched the first spacecraft dedicated solely to studying atmospheric carbon dioxide.

The spacecraft will have plenty to study, since earth’s current carbon dioxide concentration is now the longest ever in recorded history.

Earth

recent report by the National Resource Defense Council warned that summers in the future are likely to bring increased suffering, with more poison ivy and biting insects, and decreasing quality of air and water.

As farmers struggle to cope with increasing demands for food as the global population continues to swell, they are moving towards growing crops designed to meet these needs as well as withstand more extreme climate conditions. However, a warning by an agricultural research group shows they may inadvertently be increasing global malnutrition by these efforts. “When I was young, we used to feed on amaranth vegetables, guava fruits, wild berries, jackfruits and many other crops that used to grow wild in our area. But today, all these crops are not easily available because people have cleared the fields to plant high yielding crops such as kales and cabbages which I am told have inferior nutritional values,” Denzel Niyirora, a primary school teacher in Kigali, said in the report.

The stunning desert landscape of Joshua Tree National Park is now in jeopardy, as Joshua trees are now beginning to die out due to ACD.

Another study, this one published in the journal Polar Biology, revealed that birds up on Alaska’s North Slope are nesting earlier in order to keep apace with earlier snowmelt.

Antarctic emperor penguin colonies could decline by more than half in under 100 years, according to a recent study – and another showed that at least two Antarctic penguin species are losing ground in their fight for survival amidst the increasing impacts of ACD, as the Antarctic Peninsula is one of the most rapidly warming regions on earth. The scientists who authored the report warned that these penguins’ fate is only one example of this type of impact from ACD on the planet’s species, and warned that they “expect many more will be identified as global warming proceeds and biodiversity declines.”

Water

Given that the planetary oceans absorb approximately 90 percent of our carbon dioxide emissions, it should come as no surprise that they are in great peril.

This is confirmed by a recent report that shows the world’s oceans are on the brink of collapse, and in need of rescue within five years, if it’s not already too late.

As the macro-outlook is bleak, the micro perspective sheds light on the reasons why.

In Cambodia, Tonle Sap Lake is one of the most productive freshwater ecosystems on earth. However, it is also in grave danger from overfishing, the destruction of its mangrove forests, an upstream dam and dry seasons that are growing both longer and hotter due to ACD.

Anomalies in the planet’s marine life continue. A 120-foot-long jellyfish is undergoing massive blooms and taking over wider swaths of ocean as the seas warm from ACD.

The Pacific island group of Kiribati – home to 100,000 people – is literally disappearing underwater, as rising sea levels swallow the land. In fact, Kiribati’s president recently purchased eight square miles of land 1,200 miles away on Fiji’s second largest island, in order to have a plan B for the residents of his disappearing country.

Closer to home here in the United States, most of the families living on Isle de Jean Charles, Louisiana, have been forced to flee their multi-generational home due to rising sea levels, increasingly powerful storms, and coastal erosion hurried along by oil drilling and levee projects.

Looking at the bigger picture, a recently released US climate report revealed that at least half a trillion dollars of property in the country will be underwater by 2100 due to rising seas.

Meanwhile, the tropical region of the planet, which covers 130 countries and territories around the equator, is expanding and heating up as ACD progresses.

Residential neighborhoods in Oakland, California – near the coast – are likely to be flooded by both rising seas and increasingly intense storms, according to ecologists and local area planners.

On the East Coast, ocean acidification from ACD, along with lowered oxygen in estuaries, are threatening South Carolina’s coastal marine life and the seafood industry that depends upon it.

Record-setting “100-year” flooding events in the US Midwest are now becoming more the rule than the exception, thanks to ACD.

Even Fairbanks, Alaska received one-quarter of its total average annual rainfall in a 24-hour period earlier this summer – not long after the area had already received roughly half its average annual rainfall in just a two-week period.

Rising sea levels are gobbling up the coast of Virginia so quickly now that partisan political debate over ACD is also falling by the wayside, as both Republicans and Democrats are working together to figure out what to do about the crisis.

Reuters released a report showing how “Coastal flooding along the densely populated Eastern Seaboard of the United States has surged in recent years . . . with the number of days a year that tidal waters reached or exceeded NOAA flood thresholds more than tripling in many places during the past four decades.”

Flooding from rising seas is already having a massive impact in many other disparate areas of the world: After torrential rain and flooding killed at least a dozen people in Bulgaria this summer, the country continues to struggle with damage from the flooding as it begins to tally the economic costs of the disasters.

In China, rain and flooding plunged large areas of the Jiangxi and Hunan Provinces into emergency response mode. Hundreds of thousands were impacted.

The region of the globe bordering the Indian Ocean stretching from Indonesia to Kenya is now seen as being another bulls-eye target for ACD, as the impacts there are expected to triple the frequency of both drought and flooding in the coming decades, according to a recent study.

Another study revealed how dust in the wind, of which there is much more than usual, due to spreading drought, is quickening the melting of Greenland’s embattled ice sheet, which is already losing somewhere between 200 to 450 billion tons of ice annually. The study showed that increased dust on the ice will contribute towards another 27 billion tons of ice lost.

Down in Antarctica, rising temperatures are causing a species of moss to thrive, at the detriment of other marine creatures in that fragile ecosystem.

Up in the Arctic, the shrinking ice cap is causing drastic changes to be made in the upcoming 10th edition of the National Geographic Atlas of the World. Geographers with the organization say it is the most striking change ever seen in the history of the publication.

A UK science team predicted that this year’s minimum sea ice extent will likely be similar to last year’s, which is bad news for the ever-shrinking ice cap. Many scientists now predict the ice cap will begin to vanish entirely for short periods of the summer beginning next year.

Canada’s recently released national climate assessment revealed how the country is struggling with melting permafrost as ACD progresses. One example of this occurred in 2006 when the reduced ice layer of ice roads forced a diamond mine to fly in fuel rather than transport it over the melted ice roads, at an additional cost of $11.25 million.

Arctic birds’ breeding calendars are also being impacted. As ACD causes earlier Arctic melting each season, researchers are now warning of long-ranging adverse impacts on the breeding success of migratory birds there.

In addition to the aforementioned dust causing the Greenland ice sheet to melt faster, industrial dust, pollutants and soil, blown over thousands of miles around the globe, are settling on ice sheets from the Himalaya to the Arctic, causing them to melt faster.

At the same time, multi-year drought continues to take a massive toll across millions of acres across the central and western United States. It has caused millions of acres of federal rangeland to turn into dust, and has left a massive swath of land reaching from the Pacific Coast to the Rocky Mountains desolated. ACD, invasive plants and now continuously record-breaking wildfire seasons have brought ranchers to the breaking point across the West.

Drought continues to drive up food prices across the United States, and particularly prices of produce grown in California’s Central Valley. As usual, it is the poor who suffer the most, as increasing food prices, growing unemployment and more challenging access to clean water continue to escalate their struggle to survive.

California’s drought continues to have a massive and myriad impact across the state, as a staggering one-third of the state entered into the worst stage of drought. Even colonies of honeybees are collapsing due, in part, to there being far less natural forage needed to make their honey.

The snowpack in California is dramatically diminished as well. While snowpack has historically provided one-third of the state’s water supply, after three years of very low snowfall, battles have begun within the state over how to share the decreasing water from what used to be a massive, frozen reservoir of water.

The drought in Oklahoma is raising the specter of a return to the nightmarish dust bowl conditions there in the 1930s.

Recently, and for the first time, the state of Arizona has warned that water shortages could hit Tucson and Phoenix as soon as five years from now due to ongoing drought, increasing demand for water and declining water levels in Lake Mead.

This is a particularly bad outlook, given that the Lake Mead reservoir, the largest in the country, dropped to its lowest level since it was filled in the 1930s. Its decline is reflective of 14 years of ongoing drought, coupled with an increasing disparity between the natural flow rate of the Colorado River that feeds it and the ever-increasing demands for its water from the cities and farms of the increasingly arid Southwest.

Given the now chronic water crises in both Arizona and California, the next water war between the two states looms large. The one-two punch of ACD and overconsumption has combined to find the Colorado River, upon which both states heavily rely, in long-term decline.

Yet it is not just Arizona and California that are experiencing an ongoing water crisis due to ACD impacts – it is the entire southwestern United States. The naturally dry region is now experiencing dramatically extreme impacts that scientists are linkingto ACD.

The water crisis spawned by ACD continues to reverberate globally.

North Korea even recently mobilized its army in order to protect crops as the country’s reservoirs, streams and rivers ran dry amidst a long-term drought. The army was tasked with making sure residents did not take more than their standard allotment of water.

The converging crises of the ongoing global population explosion, the accompanying burgeoning middle class, and increasingly dramatic impacts caused by ACD is straining global water supplies more than ever before, causing governments to examine how to manage populations in a world with less and less water.

Air

A recent report provides a rather apocalyptic forecast for people living in Arizona: It predicts diminishing crop production, escalating electricity bills and thousands of people dying of extreme heat in that state alone.

In fact, another report from the Natural Resources Defense Council found experts predicting that excessive heat generated from ACD will likely kill more than 150,000 Americans by the end of the century, and that is only in the 40 largest cities in the country.

Poor air quality – and the diseases it triggers – are some of the main reasons why public health experts in Canada now believe that ACD is the most critical health issue facing Canadians.

Another recent study shows, unequivocally, that city-dwellers around the world should expect more polluted air that lingers in their metropolis for days on end, as a result of ACD continuing to change wind and rainfall patterns across the planet.

As heat and humidity increase with the growing impacts of ACD, we can now expect to see life-altering results across southern US cities, as has long been predicted. However, we can expect this in our larger northern cities as well, including Seattle, Chicago and New York; the intensifications are on course to make these areas unsuitable for outdoor activity during the summer.

Recently generated predictive mapping shows how many extremely hot days you might have to suffer through when you are older. These show clearly that if we continue along with business as usual – refusing to address ACD with the war-time-level response warranted to mitigate the damage – those being born now who will be here in 2100, will be experiencing heat extremes unlike anything we’ve had to date when they venture outside in the summer.

Lastly for our air section, June was the third month in a row with global average carbon dioxide levels above 400 parts per million. Levels of carbon dioxide in the atmosphere haven’t been this high in somewhere between 800,000 and 15 million years.

Fire

A new study published in Nature Geoscience revealed how increasing frequency and severity of forest fires across the planet are accelerating the melting of the Greenland ice sheet, as soot landing on the ice reduces its reflectivity. Melting at ever increasing speed, if the entire Greenland ice sheet melts, sea levels will rise 24 feet globally.

Down in Australia, the southern region of the country can now expect drier winters as a new study linked drying trends there, which have been occurring over the last few decades, to ACD.

On the other side of the globe, in Canada’s Northwest Territories, the region is battling its worst fires since the 1990s, bringing attention to the likelihood that ACD is amplifying the severity of northern wildfires.

A recently published global atlas of deaths and economic losses caused by wildfires, drought, flooding and other ACD-augmented weather extremes, revealed how such disasters are increasing worldwide, setting back development projects by years, if not decades, according to its publishers.

Denial and Reality

Never underestimate the power of denial.

Rep. Jeff Miller (R-Florida) was asked by an MSNBC journalist if he was concerned about the fact that most voters believe scientists on the issue of ACD. His response, a page out of the Republican deniers handbook, is particularly impressive:

Miller: It changes. It gets hot; it gets cold. It’s done it for as long as we have measured the climate.

MSNBC: But man-made, isn’t that the question?

Miller: Then why did the dinosaurs go extinct? Were there men that were causing – were there cars running around at that point, that were causing global warming? No. The climate has changed since earth was created.

Another impressive act of denial came from prominent Kentucky State Senate Majority Whip Republican Brandon Smith. At a recent hearing, Smith argued that carbon emissions from coal burning power plants couldn’t possibly be causing ACD because Mars is also experiencing a global temperature rise, and there are no coal plants generating carbon emissions on Mars. He even stated that Mars was the same temperature of Earth.

“I think that in academia, we all agree that the temperature on Mars is exactly as it is here. Nobody will dispute that,” Smith said.

On average, the temperature on Mars is about minus 80 degrees Fahrenheit.

“Yet there are no coal mines on Mars; there’s no factories on Mars that I’m aware of,” he added. “So I think what we’re looking at is something much greater than what we’re going to do.”

During a recent interview on CNBC, Princeton University professor and chairman of the Marshall Institute William Happer was called out on the fact that ExxonMobil had provided nearly $1 million for the Institute.

Happer compared the “hype” about ACD to the Holocaust, and when asked about his 2009 comparison of climate science to Nazi propaganda, he said, “The comment I made was, the demonization of carbon dioxide is just like the demonization of the poor Jews under Hitler. Carbon dioxide is actually a benefit to the world, and so were the Jews.”

Happer, who was introduced as an “industry expert” on the program, has not published one peer-reviewed paper on ACD.

The ACD-denier group that supports politicians and “scientists” of this type, Heartland (a free-market think tank with a $6 million annual budget) hosted a July conference in Las Vegas for deniers. One of Heartland’s former funders is ExxonMobil, and one of the panels at the conference was titled, “Global Warming As a Social Movement.” The leaders of the conference vowed to “keep doubt alive.”

Australian Prime Minister Tony Abbott used a current trip abroad to attempt to build support for a coalition aimed at derailing international efforts towards dealing with ACD.

He is simply following the lead of former Prime Minister John Howard, who teamed up with former US President George W. Bush and Canadian Prime Minister Stephen Harper to form a climate-denial triumvirate whose goal was to stop efforts aimed at dealing with ACD, in addition to working actively to undermine the Kyoto Protocol.

Meanwhile, Rupert Murdoch has said that ACD should be approached with great skepticism. He said that if global temperatures increased 3 degrees Celsius over the next 100 years, “At the very most one of those [degrees] would be manmade.” He did not provide the science he used to generate this calculation.

In Canada, Vancouver-based Pacific Future Energy Corporation claimed that a $10 billion oil sands refinery it wants to build on the coast of British Columbia would be the “world’s greenest.”

Miami, a low-lying city literally on the front lines of ACD impacts, is being inundated by rising sea levels as its predominantly Republican leadership – made up of ACD deniers – are choosing to ignore the facts and continue forward with major coastal construction projects.

Back to reality, the BBC recently ordered its journalists to cease giving any more TV airtime to ACD deniers.

Brenton County, Oregon has created a Climate Change Adaptation Plan that provides strategies for the communities there to deal with future impacts of ACD.

Despite the millions of dollars annually being pumped into ACD denial campaigns, a recent poll shows that by a 2-to-1 margin, Americans would be willing to pay more to combat ACD impacts, and most would also vote to support a candidate who aims to address the issue.

Another recent report on the economic costs that ACD is expected to generate in the United States over the next 25 years pegged an estimate well into the hundreds of billions of dollars by 2100. Property losses from hurricanes and coastal storms are expected to total around $35 billion, crop yields are expected to decline by 14 percent, and increased electricity costs to keep people cooler are expected to increase by $12 billion annually, to name a few examples.

The bipartisan report also noted that more than a million coastal homes and businesses could flood repeatedly before ultimately being destroyed.

The World Council on Churches, a group that represents more than half a billion Christians, announced that it would pull all its investments out of fossil fuels because the investments were no longer “ethical.”

US Interior Secretary Sally Jewell told reporters recently that she is witnessing ACD’s impacts in practically every national park she visits.

A June report by the UN University’s Institute for Environment and Human Security warned that ACD-driven mass migrations are already happening, and urged countries to immediately create adaption plans to resettle populations and avoid conflict.

For anyone who wonders how much impact humans have on the planet on a daily basis, take a few moments to ponder what just the impact of commercial airline emissions are in a 24-hour period by watching this astounding video.

Lastly, a landmark study released in June by an international group of scientists concluded that Earth is on the brink of a mass extinction event comparable in scale to that which caused the dinosaurs to go extinct 65 million years ago.

The study says extinction rates are now 1,000 times higher than normal, and pegged ACD as the driving cause.

Ciência Hoje On-line: Pelas abelhas

JC e-mail 4991, de 17 de julho de 2014

Campanha internacional criada por brasileiros chama atenção para o desaparecimento de colmeias e seu impacto sobre o ambiente e a segurança alimentar dos humanos

A notícia de que a população mundial de abelhas tem se reduzido pode até ser novidade para alguns, mas não aqui na CH On-line. Esses insetos vêm desaparecendo nos últimos 60 anos e 13 espécies foram extintas do planeta – das cerca de 20 mil existentes. O que parece uma boa notícia para os alérgicos é, no entanto, preocupante para o futuro da humanidade. Por isso, pesquisadores brasileiros lançaram uma campanha global para divulgar o sumiço de abelhas batizada de Bee or not to be? – um trocadilho em inglês com o verbo ‘ser’ (to be) e a palavra ‘abelha’ (bee) baseado na famosa frase de William Shakespeare: “Ser ou não ser, eis a questão.”

Os pesquisadores chamam a atenção para um fenômeno mundial denominado ‘síndrome do desaparecimento das abelhas’, decorrente de um problema no sistema nervoso desses insetos que faz com que eles ‘esqueçam’ o caminho de volta para sua colmeia e morram ao relento. Essa alteração está relacionada principalmente ao uso na agricultura de uma classe de pesticidas à base de nicotina, os neonicotinoides. Ao tentar polinizar os vegetais tratados com esses pesticidas, as abelhas se contaminam e desenvolvem o problema.

Leia o post completo na CH On-line, que tem conteúdo exclusivo atualizado diariamente: http://cienciahoje.uol.com.br/blogues/bussola/2014/07/pelas-abelhas

Brasil vacila em ratificar protocolo sobre biodiversidade (Greenpeace)

16/7/2014 – 12h07

por Redação do Greenpeace

indigenas Brasil vacila em ratificar protocolo sobre biodiversidade

 

A demora do Congresso Nacional em votar a ratificação do Protocolo de Nagoya, assinado pelo País em 2010, pode custar a cadeira brasileira na mesa de discussões da COP-12

O Brasil foi um dos primeiros países a assinar o Protocolo de Nagoya, proposto na 10ª Conferência das Partes da Convenção das Nações Unidas sobre Biodiversidade (COP-10), em 2010, como alternativa para regulamentação do uso de recursos da biodiversidade do planeta.

Depois de quatro anos, no entanto, o País acaba de perder a chance de participar ativamente da discussão sobre o assunto. As propostas contidas no protocolo não foram ratificadas pelo Congresso Nacional. Para entrar em vigor, 50 dos 92 signatários da Convenção sobre a Diversidade Biológica (CDB) precisavam confirmar sua validade, incorporando-o a legislação, até junho deste ano. O que aconteceu nesta segunda-feira 11, sem a participação do Brasil.

“O Brasil perdeu uma grande chance deixando de votar este projeto, uma vez que o País foi protagonista da proposta, junto com o próprio Japão. Mas se em casa a gente não consegue aprovar o que sugerimos internacionalmente, isso mostra que fomos muito bons de papo e pouco eficientes na ação”, avalia Marcio Astrini, coordenador da Campanha da Amazônia do Greenpeace Brasil. “De certa maneira isso é um reflexo da visão ambiental do atual governo, que ao invés de ver no Meio Ambiente uma oportunidade, vê nele um empecilho”, completa Astrini.

Parado desde 2012 no Congresso Nacional, o projeto foi designado para uma comissão especial, que nunca foi criada. O assunto sofre forte resistência por parte da bancada ruralista, que acredita que a ratificação da proposta poderia aumentar os custos do agronegócio no Brasil.

Um dos pontos mais polêmicos refere-se ao pagamento de royalties a países pela repartição de benefícios aos detentores de conhecimentos tradicionais associado ao uso de recursos genéticos oriundos da biodiversidade, como povos indígenas e comunidades tradicionais. “O objetivo central do protocolo é aumentar a proteção sobre as reservas naturais do planeta e, para isso, deve criar uma série de regras para controlar a utilização dos recursos, estabelecendo, inclusive regras econômicas. Isso vai no caminho do que precisa ser feito no mundo todo e precisamos participar desta discussão”, observa Astrini.

O Brasil concentra aproximadamente 20% de toda a biodiversidade do planeta. A regulação contribuiria para o combate a biopirataria, com ganhos no campo da ciência e também para as populações tradicionais, que teriam seus saberes reconhecidos e valorizados.

Outro ponto importante do protocolo é o plano estratégico de preservação, que aumenta as áreas terrestres e marítimas a serem protegidas no planeta. As regiões terrestres protegidas passariam de 10% para 17% e as zonas marítimas de proteção ambiental passaria de 1% para 10% de seu total. O próximo encontro dos signatários da CDB será na 12ª Conferência das Partes (COP-12) da CDB, em Pyeongchang, República da Coréia, de 6 a 17 de outubro deste ano.

* Publicado originalmente no site Greenpeace.

O manguezal avança (Fapesp)

01.07.2014

O manguezal da Reserva Biológica de Guaratiba, no Rio de Janeiro, parece estar em migração continente adentro. O movimento é uma resposta à elevação no nível do mar, que pesquisadores do Núcleo de Estudos do Manguezal (Nema), da Universidade do Estado do Rio de Janeiro (Uerj), atribuem a mudanças globais no clima.

O oceanógrafo Gustavo Duque Estrada, do Nema, foi a campo com a equipe de vídeo de Pesquisa FAPESP para mostrar como o grupo vem monitorando essa floresta costeira desde os anos 1990. Na universidade, o coordenador do grupo, Mário Soares, explica o significado dos resultados de pesquisa para entender os manguezais, suas respostas às mudanças ambientais e sua influência sobre o ambiente, incluindo por meio da capacidade de armazenar carbono. “Áreas que antes eram planícies hipersalinas, lá no início da década de 1990, hoje já são florestas de mangue”, conta.

Projeto avalia os impactos de mudanças climáticas nos manguezais fluminenses (Faperj)

Débora Motta

10/07/2014

                                        Acervo Nema/Uerj
 1
 Árvores de raízes aéreas se destacam nos
mangues: agentes na captura do carbono
 do ar

O Brasil possui a segunda maior extensão territorial de manguezais, perdendo apenas para a Indonésia. Eles estão presentes em todo o litoral brasileiro, desde o Amapá até o município de Laguna, em Santa Catarina. Esses ecossistemas, com árvores de raízes aéreas e retorcidas, equilibradas na lama e na água salobra, são fundamentais para o equilíbrio ambiental. Afinal, são verdadeiros berçários naturais de diversas espécies, como peixes, moluscos e crustáceos, que neles encontram condições ideais para reprodução e abrigo. “Os manguezais protegem a costa contra os ventos e a inundação do mar, sendo fontes de subsistência de populações, pela pesca e turismo”, disse o oceanógrafo Mário Luiz Gomes Soares, coordenador do Núcleo de Estudos em Manguezais (Nema) e do programa de pós-graduação em Oceanografia da Universidade do Estado do Rio de Janeiro (Uerj).

Essa riqueza natural, contudo, pode ser comprometida pelas mudanças climáticas em curso no planeta. Para avaliar como o aquecimento global e outros fatores ambientais vêm afetando esses ecossistemas, Soares coordena pesquisas sobre o nível de vulnerabilidade dos manguezais, que tiveram início no estado do Rio de Janeiro, com apoio da FAPERJ, e se ampliaram para outros estados brasileiros, em projetos desenvolvidos com a rede de pesquisa do Instituto Nacional de Ciência e Tecnologia sobre Ambientes Marinhos (INCT-AmbTropic), coordenado por pesquisador vinculado à Universidade Federal da Bahia e destinado ao estudo das respostas do litoral brasileiro às mudanças climáticas.

O estudo, considerado como o marco inicial das pesquisas de Soares, vem sendo realizado desde o final da década de 1990, no manguezal de Guaratiba, localizado a cerca de 70 quilômetros a oeste da capital fluminense, na Baía de Sepetiba. Contemplado pela Fundação por meio dos editais Apoio à Pesquisa Básica (APQ 1), Apoio a Programas de Pós-Graduação Estaduais, Prioridade Rio e Apoio ao estudo de soluções para problemas relativos ao meio ambiente, o oceanógrafo foi também bolsista da FAPERJ pelo programa Jovem Cientista do Nosso Estado. O trabalho vem sendo financiado ainda pelo Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) e pela Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (Capes).

O manguezal de Guaratiba é o único no Brasil acompanhado em detalhes por pesquisadores durante um período tão extenso. “Em Guaratiba, nosso primeiro laboratório a céu aberto, observamos o impacto da elevação do nível médio do mar e dos ciclos climáticos sobre os manguezais. A partir desse modelo de estudo, a pesquisa foi ampliada para áreas de monitoramento em todo o Brasil, desde Santa Catarina até o Pará, e outras localidades no estado do Rio de Janeiro, incluindo os manguezais da Baía de Guanabara”, disse.

Em outras palavras, os ciclos climáticos regulam a vida nos manguezais. Durante os períodos mais úmidos, a chuva lava o solo, dilui o sal e as árvores conseguem se estabelecer nas planícies hipersalinas, conhecidas como apicuns – uma área descampada que lembra um deserto, extremamente salina, com solo duas a quatro vezes mais salgado do que a lama do manguezal, e sem a presença de vegetação arbórea. Já durante os períodos mais secos, ocorre o inverso e a vegetação do mangue fica prejudicada. “As mudanças climáticas podem alterar o regime de chuvas, fazendo com que elas fiquem mais escassas em algumas regiões e mais frequentes em outras. Em Guaratiba, por exemplo, observamos as respostas da floresta aos ciclos de clima. Nos anos mais úmidos ela cresce, e nos mais secos retrai”, destacou Soares. “Em algumas regiões sem aporte de rio, os manguezais dependem apenas da água da chuva. Quando chove menos que o normal, a vegetação do mangue fica prejudicada, e até morre”, completou.

Durante todos esses anos de pesquisa de campo, em que o oceanógrafo e a equipe do Nema deixa o conforto do Rio para fazer medições na lama e na mata fechada de Guaratiba, foi observada uma tendência comum em outros manguezais. “Ao longo dos anos, as espécies de vegetais do mangue e, consequentemente, de animais, começaram a colonizar uma área diferente, avançando em direção ao continente. Essa migração é uma resposta da floresta à elevação do nível médio do mar, devido a fatores como o aquecimento global. Para sobreviver, o manguezal precisa ir se adaptando conforme a subida das águas”, resumiu Soares.

Assim, as florestas de mangue vêm avançando continente adentro sobre os apicuns. Quando a maré sobe, o mar inunda essas planícies. A água empoçada, após sua evaporação, deposita sal em excesso no solo, o que inviabiliza a sobrevivência das espécies típicas do mangue. Apesar das condições de sobrevivência adversas, aos poucos as plantas se instalam ali, devido à inundação dessa área, cada vez mais frequente com o aumento do nível do mar. “Em Guaratiba, a floresta avançou rumo ao continente quase 80 metros, desde 1998”, detalhou Soares.

 Acervo Nema/Uerj
    2
Mário Soares, da Uerj, ressalta a importância
de políticas públicas para conservar manguezais   

Diante dessa observação, o desafio é avaliar se há espaço físico nos territórios que devem ser ocupados pelos manguezais, vizinhos a esses ecossistemas. “Prevendo esse movimento de migração dos manguezais, que vai se intensificar nos próximos anos, temos que ter políticas públicas, a longo prazo, para a gestão adequada da zona costeira. É preciso saber se essas áreas atrás dos manguezais, perto do continente, estão disponíveis. Muitas delas já foram ocupadas por empreendimentos imobiliários, o que deve ser uma fonte de preocupação”, explicou. E prosseguiu: “Em Sepetiba, a Companhia Siderúrgica do Atlântico foi construída exatamente na área onde o mangue deveria migrar. Daí a importância do planejamento urbano de ocupação territorial.”

Na Baía de Guanabara, há um problema de planejamento similar. Entre os manguezais estudados ao longo desse período pela equipe do Nema, os da região metropolitana do Rio apresentam, na maioria, alta vulnerabilidade à subida do nível do mar. “Em um estudo comandado pelo Instituto Nacional de Pesquisas Espaciais (Inpe), fizemos uma análise dos sistemas costeiros, mapeamos todos os manguezais dos municípios da Região Metropolitana do Rio de Janeiro e analisamos a vulnerabilidade deles no caso de elevação do nível do mar”, resumiu Soares. “As únicas áreas de vulnerabilidade intermediária na Baía de Guanabara são aquelas protegidas pela APA de Guapimirim e a Estação Ecológica Guanabara”, completou. (Veja o mapa da vulnerabilidade dos manguezais à elevação do nível do mar na região metropolitana do Rio de Janeiro, sendo que as áreas representadas em vermelho apresentam alta vulnerabilidade, as áreas em amarelo, média vulnerabilidade, e as áreas em verde, baixa vulnerabilidade, segundo as pesquisas do Nema:http://www.faperj.br/images/Mapeamento_manguezais_RJ.jpg).

Outra característica dos manguezais monitorados por Soares, de extrema relevância ambiental, é a sua importante capacidade de absorver carbono da atmosfera. Para estudar como os manguezais “sequestram” o carbono do ar, o grupo do Nema desenvolveu alguns modelos matemáticos para estimar a quantidade de carbono armazenada em cada espécie vegetal do mangue, ou mesmo na lama. O manguezal tem uma capacidade de armazenamento de carbono pouco menor que a de outras florestas tropicais. Em relação à Amazônia, o valor total só não é maior porque a área do ecossistema costeiro é muito menor (pouco mais de 1 milhão de hectares) do que a da Amazônia (aproximadamente 500 vezes maior) ou da mata atlântica.

Acervo Nema/Uerj
 3
 Equipe do Nema em trabalho de campo: estudo do manguezal
de Guaratiba foi a base para entender mangues em outros estados

“No entanto, se considerarmos a soma da quantidade de carbono aprisionado na biomassa aérea (a parte das árvores acima do solo), com a biomassa subterrânea (as raízes) e o sedimento (a lama), o manguezal ganha da Amazônia no armazenamento de carbono por unidade de área”, avaliou Soares. E prosseguiu: “É importante conservar os manguezais, que têm grande potencial para aprisionar o carbono e, quando um sistema com tanto carbono é destruído, libera esse carbono na atmosfera, o que aumenta os gases de efeito estufa responsáveis pelo aquecimento global”, alertou.

Com o aumento da temperatura do planeta, os manguezais também devem ampliar sua distribuição geográfica. A vegetação dos manguezais não cresce em baixas temperaturas, e por isso mais da metade desses ecossistemas do mundo está entre as latitudes 10°N e 10°S. “Como o sul do Brasil deve se tornar mais quente até o fim do século XXI, conforme as previsões climáticas, os manguezais devem ocupar latitudes mais altas e se expandir para regiões onde não existem hoje, ao sul do limite deles em Laguna”, disse Soares. Até o momento, conforme artigo do Nema publicado na renomada revista científica britânicaEstuarine, Coastal and Shelf Sciencenão houve expansão dos manguezais além dos limites latitudinais, nos últimos 30 anos.

Assim, pela importância ecológica, econômica e social, e pela vulnerabilidade das áreas costeiras onde preferencialmente ocorrem os adensamentos urbanos, empreendimentos portuários e industriais, e o cultivo de camarões, os manguezais merecem atenção especial. “Esperamos, dessa forma, contribuir, através da elaboração de um estudo aplicado, para a estruturação de políticas de conservação, restauração e monitoramento dos remanescentes de manguezal do Estado do Rio de Janeiro e do Brasil e, por conseguinte, dos bens e serviços vinculados a esses sistemas”, justificou o oceanógrafo.

Ao lado de Soares, participam do projeto os professores Felipe de Oliveira Chaves e Gustavo Calderucio Duque Estrada, ambos do Nema/Uerj; as professoras Cláudia Hamacher e Cássia Farias, do Laboratório de Geoquímica Orgânica Marinha da Uerj; e a professora Carla Madureira, da Universidade Federal do Rio de Janeiro (UFRJ), além de diversos alunos de pós-graduação do Nema/Uerj, como os doutorandos Viviane Fernandez, Paula Almeida, Daniel Medina, Michelle Passos e Marciel Estevam, além dos mestrandos Mayne Assunção, Brunna Tomaino, Carolina Cardoso e Ana Carolina Teixeira.

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