1. Department of Integrative Biology, Oklahoma State University, Stillwater, OK, USA
2. Department of Forestry, Wildlife, and Fisheries, University of Tennessee, Knoxville, TN, USA
3. USDA Forest Service, Southern Research Station, Athens, GA, USA
4. Warnell School of Forestry and Natural Resources, University of Georgia, GA, USA
5. Recreation, Heritage, and Volunteer Resources Staff, USDA Forest Service, Washington DC, USA