Study: Amphibians disappearing at alarming rate
GRANTS PASS, Ore. (AP) — A new study has determined for the first time just how quickly frogs and other amphibians are disappearing around the United States, and the news is not good.
The U.S. Geological Survey said Thursday that populations of frogs, salamanders and toads have been vanishing from places where they live at a rate of 3.7 percent a year.
That puts them on a path to disappearing from half their inhabited sites nationwide in 20 years.
USGS ecologist Michael J. Adams said the alarming news is that even species thought to be doing OK are declining, though at a slower rate, 2.7 percent a year.
"These are really ancient species that have been surviving a long time on earth through all kinds of changes," Adams said. "It's just a concern to see."
The data showed that species on the International Union for Conservation of Nature red list of declining species were disappearing from sites at an even higher rate, 11.6 percent a year. That would result in half the sites being unoccupied in six years. A third of amphibian species are on the red list.
"They just disappear," Admas said. "Populations are going away." [continue]