1. Wildlife Biology Program; Department of Ecosystem and Conservation Sciences; College of Forestry and Conservation; University of Montana; Missoula MT USA
2. U.S. Forest Service, Northern Research Station; University of Massachusetts; Amherst MA USA
3. Harrisonburg VA USA
4. U.S. Geological Survey; Leetown Science Center; S.O. Conte Anadromous Fish Research Center; Turners Falls MA USA