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In carbon sequestration, money grows on trees

Guyana’s tropical rainforests protected under the REDD program provide not just natural resources but an income stream to the country. Two hours south of Georgetown, Guyana, a paved highway recedes, giving way to a rutted red road gushing through thick rainforest. In its muddiest spots, the road swallows trucks and spits them out at dangerous angles. Many hours later, it leads to an area of protected land called Iwokrama, a Rhode Island-size forest in the heart of Guyana, crowded with ancient buttress-trunked trees draped in liana vines. [media-credit name=”Hannah Hoag” align=”alignleft” width=”300″][/media-credit]Since 2003, Jake Bicknell has been a fixture within … Read more…

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Arctic Ocean full up with carbon dioxide

Loss of sea ice is unlikely to enable Arctic waters to mop up more carbon dioxide from the air. As climate scientists watched the Arctic’s sea-ice cover shrink year after year, they thought there might be a silver lining: an ice-free Arctic Ocean could soak up large amounts of CO2 from the atmosphere, slowing down the accumulation of greenhouse gases and climate change. But research published in Science today suggests that part of the Arctic Ocean has already mopped up so much CO2 that it could have almost reached its limit1. Wei-Jun Cai, a biogeochemist at the University of Georgia … Read more…

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Report maps perils of warming

Degree-by-degree breakdown of climate effects published. As the US Senate gears up to debate the latest incarnation of proposed climate legislation next week, a blue-ribbon panel has released what it hopes will be a definitive guide to the consequences of climate change for lawmakers and the public. In offering a degree-by-degree breakdown of the potential impacts of temperature change, the report aims to highlight the effects of stabilizing greenhouse gases at a chosen target level. Yet few are optimistic that the report will influence the fate of the scaled-back climate bill, which would cap emissions from electricity utility companies. The … Read more…

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Dying trees could exacerbate climate change

Forests could emit more carbon than they store if temperatures rise. Forestry experts have again warned that climate change could transform forests from sinks to sources of carbon. The carbon storing capacity of global forests could be lost entirely if the earth heats up 2.5° Celsius above pre-industrial levels, according to a new report. The analysis by the International Union of Forest Research Organizations (IUFRO) is a synthesis of existing information. “This is the first time it has been put together on a global scale,” says Alexander Buck, IUFRO deputy executive director, in Vienna. “It is the most thorough assessment … Read more…