1. Warnell School of Forestry and Natural ResourcesUniversity of GeorgiaAthensGeorgia30602USA
2. U.S. Geological Survey, Georgia Cooperative Fish and Wildlife Research Unit, Warnell School of Forestry and Natural ResourcesUniversity of GeorgiaAthensGeorgia30602USA
3. U.S. Department of AgricultureForest Service, Rocky Mountain Research Station322 East Front Street, Suite 401BoiseIdaho83702USA