1. U.S. Geological Survey, Northern Rocky Mountain Science Center, Missoula, Montana 59801, United States
2. Wildlife Biology Program, W. A. Franke College of Forestry & Conservation, University of Montana, Missoula, Montana 59812, United States
3. U.S. Geological Survey, Western Ecological Research Center, Dixon, California 95620, United States
4. U.S. Geological Survey, Forest and Rangeland Ecosystem Science Center, Corvallis, Oregon 97331 United States
5. U.S. Geological Survey, Western Ecological Research Center, San Diego, California 92101, United States
6. U.S. Geological Survey, Eastern Ecological Science Center (Patuxent Wildlife Research Center), Turners Falls, Massachusetts 01376, United States
7. U.S. Geological Survey, Wetland and Aquatic Research Center, Lafayette, Louisiana 70506, United States
8. U.S. Geological Survey, National Wildlife Health Center, Madison, Wisconsin 53711, United States
9. U.S. Geological Survey, Western Ecological Research Center, Point Reyes Station, California 94956, United States
10. Department of Ecosystem Science and Management, Pennsylvania State University, University Park, Pennsylvania 16802, United States
11. U.S. Geological Survey, Fort Collins Science Center, Fort Collins, Colorado 80526, United States
12. U.S. Geological Survey, Wetland and Aquatic Research Center, Gainesville, Florida 32653, United States
13. U.S. Geological Survey, New Jersey Water Science Center, Lawrenceville, New Jersey 08648, United States