Affiliation: | 1. Department of Wildlife, Fisheries and Conservation Biology, University of Maine, 5755 Nutting Hall, Orono, ME, 04469 USA;2. Department of Environmental Conservation, University of Massachusetts, Amherst, 160 Holdsworth Way, Amherst, MA, 01003 USA;3. U.S. Geological Survey, Maine Cooperative Fish and Wildlife Research Unit, Orono, ME, USA;4. U.S. Geological Survey, West Virginia Cooperative Fish and Wildlife Research Unit, West Virginia University, Morgantown, WV, USA |