Status and Trends of Amphibian Declines and Extinctions Worldwide

TLDR

The study presents the first global assessment of amphibians to contextualize the widespread phenomenon of amphibian declines. Amphibians are more threatened and decline faster than birds or mammals, with 48 % of rapidly declining species affected by unknown drivers; declines are concentrated in Neotropical montane, stream‑associated species, and the lack of conservation measures threatens hundreds of species toward extinction.

Abstract

The first global assessment of amphibians provides new context for the well-publicized phenomenon of amphibian declines. Amphibians are more threatened and are declining more rapidly than either birds or mammals. Although many declines are due to habitat loss and overutilization, other, unidentified processes threaten 48% of rapidly declining species and are driving species most quickly to extinction. Declines are nonrandom in terms of species' ecological preferences, geographic ranges, and taxonomic associations and are most prevalent among Neotropical montane, stream-associated species. The lack of conservation remedies for these poorly understood declines means that hundreds of amphibian species now face extinction.