1. Department of Fisheries, Wildlife, and Conservation Sciences Oregon State University Corvallis Oregon USA
2. Department of Forest Engineering, Resources and Management Oregon State University Corvallis Oregon USA
3. Forest and Rangeland Ecosystem Science Center US Geological Survey Corvallis Oregon USA
4. Pacific Northwest Research Station USDA Forest Service Juneau Alaska USA
5. Pacific Northwest Research Station USDA Forest Service Corvallis Oregon USA
6. Pacific Southwest Research Station USDA Forest Service Arcata California USA