1. 2Department of Biology, Duke University, Durham, North Carolina 27708 USA;
2. 3CSIRO Forestry and Forest Products, P.O. Box 5, Wembley, Western Australia 6913;
3. 4USDA Forest Service, Pacific Northwest Research Station, 3200 Jefferson Way, Corvallis, Oregon 97331 USA;
4. 5Institute of Microbiology, Leopold Franzens‐University Innsbruck, Technikerstr. 25, 6020 Innsbruck, Austria; and
5. 6Department of Forest Science, Oregon State University, Corvallis, Oregon 97331–7501 USA