Status and trends of amphibian declines and extinctions worldwide.
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.
Stuart
Simon N
SN
IUCN Species Survival Commission/Conservation International Center for Applied Biodiversity Science Biodiversity Assessment Unit, 1919 M Street N.W., Washington, DC 20036, USA. s.stuart@conservation.org
Chanson
Janice S
JS
Cox
Neil A
NA
Young
Bruce E
BE
Rodrigues
Ana S L
AS
Fischman
Debra L
DL
Waller
Robert W
RW
D000663:Amphibians / Q000145:classification; D000818:Animals; D044822:Biodiversity; D003247:Conservation of Natural Resources; D017753:Ecosystem; D004777:Environment; D011157:Population Dynamics