One-Third of Amphibian Species Threatened

One-third of the world's amphibian species face extinction, according to a paper published in the journal Science. Research has found that 122 species have either gone extinct or have not been sighted in the wild since 1980.

Scientists are particularly alarmed at this study because frogs, newts, salamanders and other amphibians are especially sensitive to their environment. Amphibians are therefore often seen as barometers that provide early warnings about the health of their immediate habitats.

Exactly what is causing the declines is not clear. Loss of habitat is one reason, but population declines are seen in remote areas of the world as well. Amphibians are also susceptible to fungal infections that increase when the animals are under stress.