A is for Amphibian Release Date: May 3, 2021 Did you know that the USGS Ecosystems Mission Area is the biological research arm of the U.S. Department of the Interior? USGS Ecosystems Mission Area scientists are leading research and monitoring efforts across the country and in some cases around the globe. Studying topics from amphibians to zoonotic diseases, they provide natural resource managers with the information and data needed to make decisions about the nation’s wildlife and wild places. In the Ecosystems A-Z series, we share just some of the work our scientists are leading from A-Z, starting with amphibians.