New research from the American Museum of Natural History says that global warming is forcing species to move up tropical mountains. Christopher Raxworthy, Associate Curator in the Department of Herpetology, predicts that at least three species of amphibians and reptiles found in Madagascar's mountainous north could go extinct between 2050 and 2100 because of habitat loss associated with rising global temperatures.
These species, currently moving up-slope to compensate for habitat loss at lower and warmer altitudes, will eventually have no place to move to. The mountains can only go so high.
In a paper published this month in Global Change Biology, Raxworthy and colleagues found overall trends for elevation changes among 30 species of amphibians and reptiles. Uphill movement is a predicted response to increased temperatures, and other studies, including that of J. Alan Pounds in Costa Rica, have provided some empirical evidence of how tropical animals respond to climate change.