1. Department of Ecology Swedish University of Agricultural Sciences P.O. Box 7044 SE‐750 07 Uppsala Sweden
2. School of Biological Sciences Royal Holloway University of London Egham Surrey TW20 0EX UK
3. School of Biological Sciences University of Tasmania, and Forestry Tasmania Hobart Tas. 7001 Australia
4. Fenner School of Environment and Society The Australian National University Canberra ACT 0200 Australia
5. Northern Research Station USDA Forest Service Grand Rapids MN 55744 USA
6. Institute of Forestry and Rural Engineering Estonian University of Life Sciences Kreutzwaldi 5 EE‐51014 Tartu Estonia
7. Forestry Department Faculty of Science and Technology Vancouver Island University 900 Fifth Street Nanaimo BC V9R 5S5 Canada
8. School of Environmental and Forest Science College of the Environment University of Washington Seattle WA 98195 USA
9. School of Forest Sciences University of Eastern Finland – Joensuu P.O. Box 111 (Yliopistokatu 7) FI‐80101 Joensuu Finland
10. Department of Renewable Resources University of Alberta Edmonton AB T6G 2H1 Canada
11. Centre d'Étude de la Forêt (CEF) Institut des Sciences de la Forêt Tempérée (ISFORT) Université du Québec en Outaouais (UQO) et Université du Québec à Montréal (UQAM) C.P. 8888 Succ. Centre‐Ville Montréal QC H2X 3Y5 Canada
12. Department of Ecology and Natural Resource Management Norwegian University of Life Sciences P.O.Box 5003 NO‐1432 Ås Norway