1. Huxley
College of the Environment, Western Washington University, Bellingham, Washington 98225-9181, United States
2. Pacific
Northwest Region, USDA Forest Service, Portland, Oregon 97204-3440, United States
3. School
of Environmental and Forest Sciences, College of the Environment, University of Washington, Seattle, Washington 98195, United States
4. Department
of Forest Ecosystems and Society, Oregon State University, Corvallis, Oregon 97331, United States