1. Institute of Silviculture; Department of Forest- and Soil Sciences; University of Natural Resources and Life Sciences (BOKU); Peter Jordan Straße 82 1190 Wien Austria
2. USDA Forest Service; Pacific Northwest Research Station; Corvallis OR 97331 USA
3. USDA Forest Service; Pacific Northwest Research Station; Seattle WA 98103 USA
4. Ecosystem Sciences Division; Department of Environmental Science, Policy, and Management; University of California; Berkeley CA 94720 USA
5. Department of Geography; University of Idaho; Moscow ID 83844 USA