Brett Addis, a Ph.D candidate at the University of Montana, records data while obtaining samples from a vernal pond Feb 13, 2017 at Travis Air Force Base, Calif. Addis, part of a two-person team, is the field coordinator for a “habitat quality assessment” project to determine if Travis has a viable environment for the western spadefoot toad. The assessment includes recording data for vegetation type, soil friability and a visual check for mammal burrows and WST predators. The team will also collect DNA samples from several ephemeral vernal pools through a filter that will go back to a genetics lab to determine if any DNA from the WST is floating around the pool, indicating the toads have been there. (U.S. Air Force photo/ Heide Couch)
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