assessments simply categorize extinction risk, providing little information on the rate of
population losses. We conducted the first analysis of the rate of change in the probability that
amphibians occupy ponds and other comparable habitat features across the United States.
We found that overall occupancy by amphibians declined 3.7% annually from 2002 to 2011.
Species that are Red-listed by the International Union for Conservation of Nature (IUCN) …