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Catastrophic amphibian declines have multiple causes, no simple solution
Date:4/25/2011

, because they have been one of Earth's great survivors evolving about 400 million years ago before the dinosaurs, persisting through ice ages, asteroid impacts, and myriad other ecological and climatic changes.

Their rapid disappearance now suggests that the variety and rate of change exceeds anything they have faced before, the researchers said.

"Modern selection pressures, especially those associated with human activity, may be too severe and may have arisen too rapidly for amphibians to evolve adaptations to overcome them," the researchers concluded.


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Contact: Andrew Blaustein
blaustea@science.oregonstate.edu
541-737-9869
Oregon State University
Source:Eurekalert

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