Muths, E., M.J. Adams, E.H.C. Grant, D. Miller, P.S. Corn, and L.C. Ball
Muths, E., M.J. Adams, E.H.C. Grant, D. Miller, P.S. Corn, and L.C. Ball. 2012. The state of amphibians in the United States. Fact Sheet 2012-3092. Reston, VA: U.S. Geological Survey. 4 p.
More than 25 years ago, scientists began to identify unexplained declines in amphibian populations around the world. Much has been learned since then, but amphibian declines have not abated and the interactions among the various threats to amphibians are not clear. Amphibian decline is a problem of local, national, and international scope that can affect ecosystem function, biodiversity, and commerce. This fact sheet provides a snapshot of the state of the amphibians and introduces examples to illustrate the range of issues in the United States.