Bosch, J; Fernández-Beaskoetxea, S; Garner, TWJ; Carrascal, LM; (2018) Long-term monitoring of an amphibian community after a climate change- and infectious disease-driven species extirpation. Global Change Biology , 24 (6) pp. 2622-2632. 10.1111/gcb.14092.

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Abstract

Infectious disease and climate change are considered major threats to biodiversity and act as drivers behind the global amphibian decline. This is to a large extent based on short term studies that are designed to detect the immediate and strongest biodiversity responses to a threatening process. What few long term studies are available, although typically focussed on single species, report outcomes that often diverge significantly from the short term species responses. Here we report the results of an 18 year survey of an amphibian community exposed to both climate warming and the emergence of lethal chytridiomycosis. Our study shows that the impacts of infectious disease is ongoing but restricted to two out of nine species that form the community, despite the fact all species can become infected with the fungus. Climate warming appears to be affecting four out of the nine species, but the response of three of these is an increase in abundance. Our study supports a decreasing role of infectious disease on the community, and an increasing and currently positive effect of climate warming. We caution that if the warming trends continue, the net positive effect will turn negative as amphibian breeding habitat becomes unavailable as water bodies dry, a pattern that already may be underway.

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