Global
Amphibian Assessment 2004
(IUCN Stuart et al Science 306, 2004)
(IUCN Stuart et al Science 306, 2004)
32% of amphibian species
are threatened (1856 species),
7.4% are Critically Endangered.
122 species possibly extinct,
mostly since 1980.
The largest group of
threatened frogs fit into the category
of “enigmatic decline” – i.e., declining even where suitable habitat remains.
“Enigmatic-decline
species present the greatest challenge
for conservation, because there are currently no known techniques for ensuring their survival in the wild”
“Unless these declines
are quickly understood and reversed,
hundreds of species of amphibian can be expected to become extinct over the next few decades”