Publicado por: pongpesca | 2019/02/20

Rapid Warming of Antarctic Seas Shrinks Range of Key Species

Krill“Antarctic krill, the thumb-sized crustaceans that form the foundation of the Southern Ocean food web, are facing increasing pressure from climate change, underscoring the need to protect this keystone species and its habitat.
A study analyzing 90 years of data, published Jan. 21 in the journal Nature Climate Change, found that the center of the krill population near the Antarctic Peninsula has shifted about 440 kilometers (nearly 275 miles) southward, and that the number of juveniles has dropped since 1970. This news has huge implications: As warming waters and sea ice loss force krill to retreat toward the continent—where the landmass blocks further southward movement—their available habitat decreases, which might lead to further drops in their numbers, and cascading impacts on the entire Southern Ocean food web.”

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Fonte: Pew Charitable Trusts, 20 de fevereiro de 2019

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