4.8 Article

Ongoing declines for the world's amphibians in the face of emerging threats

Journal

NATURE
Volume 622, Issue 7982, Pages 308-+

Publisher

NATURE PORTFOLIO
DOI: 10.1038/s41586-023-06578-4

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The second Global Amphibian Assessment reveals that amphibians, especially salamanders in the Neotropics, are the most threatened vertebrate class, with 40.7% of species globally threatened. The deteriorating status of amphibians is predominantly driven by climate change, disease, and habitat loss.
Systematic assessments of species extinction risk at regular intervals are necessary for informing conservation action1,2. Ongoing developments in taxonomy, threatening processes and research further underscore the need for reassessment3,4. Here we report the findings of the second Global Amphibian Assessment, evaluating 8,011 species for the International Union for Conservation of Nature Red List of Threatened Species. We find that amphibians are the most threatened vertebrate class (40.7% of species are globally threatened). The updated Red List Index shows that the status of amphibians is deteriorating globally, particularly for salamanders and in the Neotropics. Disease and habitat loss drove 91% of status deteriorations between 1980 and 2004. Ongoing and projected climate change effects are now of increasing concern, driving 39% of status deteriorations since 2004, followed by habitat loss (37%). Although signs of species recoveries incentivize immediate conservation action, scaled-up investment is urgently needed to reverse the current trends. The second Global Amphibian Assessment finds that the status of amphibians is continuing to deteriorate globally, driven predominantly by climate change, disease and habitat loss.

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