1. Department of Forest Ecology and Management Swedish University of Agricultural Sciences Umeå SE‐90283 Sweden
2. Global Change Research Institute CAS Bělidla 986/4a Brno 603 00 Czech Republic
3. International Institute for Applied Systems Analysis Schlossplatz 1 Laxenburg A‐2361 Austria
4. School of Biological, Earth and Environmental Sciences The University of New South Wales Sydney NSW 2052 Australia
5. Institute of Forestry and Rural Engineering Estonian University of Life Sciences Kreutzwaldi 5 Tartu EE‐510 06 Estonia