terça-feira, 14 de setembro de 2010

Arctic species under threat, report warns


London, England (CNN) -- Polar bears clinging to melting ice sheets have become one of the most frequently used images to portray the perils of climate change.
But a new report by the U.S. Center for Biological Diversity (CBD) and UK-based Care for the Wild International (CWI) is bringing attention to the predicament of other equally endangered Arctic species.
Seventeen Arctic animals are highlighted in "Extinction: It's Not Just for Polar Bears".
Shaye Wolf, lead author and climate science director of the CBD told CNN: "The plight of the polar bear due to global warming is very well known and familiar. But many other Arctic species are suffering a similar fate -- from plankton all the way to the great whales".
The impacts of climate change are "unfolding far more rapidly in the Arctic than any other area on the planet" threatening its ecosystem, the report said.
A 2009 study by Donald K. Perovich and Jacqueline A Richter-Menge -- "Loss of Sea Ice in the Arctic" -- reported that the sea ice extent in 2007 was one million square miles below the average figure recorded between 1979 and 2000.
This, and other data suggests, say scientists, that summer sea ice could completely disappear in the Arctic by 2030.
The ice retreat is already spelling trouble for marine mammals like the Pacific walrus and the harp seal.
CNN