Climate Change and Frog Deaths

Biologists agree that amphibian populations are undergoing massive extinctions - they just can't agree on why.

Written byJonathan Scheff
| 4 min read

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Scientists became aware of extinctions in various frog species in the 1980s, when J. Alan Pounds and colleagues reported the disappearances of golden toads (Bufo periglenes) and harlequin frogs (Atelopus) in the Monteverde Cloud Forest Reserve of Costa Rica.1 It wasn't until the late 1990s that researchers found a suspect for the mysterious case of global frog declines: an infectious disease, chytridiomycosis, caused by the chytrid fungus, Batrachochytrium dendrobatidis.

Two years ago Pounds, a resident scientist at the Monteverde Cloud Forest Reserve, and his colleagues implicated another factor in frog deaths. In this Hot Paper, they compiled data from multiple sources and found a correlation between unusually warm years and the disappearance of frog species. They concluded that climate change is creating an environment more favorable to the chytrid fungus, thus contributing to amphibian extinction2 - a conclusion that some celebrate as essential progress in the dialogue of climate change, ...

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