1. Department of Forest, Rangeland, and Fire Sciences, College of Natural Resources, University of Idaho, Moscow, ID 83843, USA
2. USDA Forest Service, Rocky Mountain Research Station, Moscow, ID 83843, USA
3. USDA Forest Service, Southern Research Station, Athens, GA 30602, USA
4. Office of Environmental Stewardship, University of the South, Sewanee, TN 37383, USA
5. Joseph W. Jones Ecological Research Center, 3988 Jones Center Drive, Newton, GA 39870-8522, USA
6. Department of Forest Engineering, Resources and Management, Oregon State University, Corvallis, OR 97331, USA
7. Department of Earth and Planetary Science, University of California, Berkeley, CA 94720, USA
8. Department of Ecosystem Science and Sustainability, Colorado State University, Fort Collins, CO 80523, USA
9. Department of Natural Resources, University of Twente, 7500 AE, Enschede, The Netherlands