1. Department of Ecology and Genetics; Evolutionary Biology Centre; Uppsala University; Norbyvägen 18D 75236 Uppsala Sweden
2. CNR; Institute of Biosciences and Bioresources; Via Madonna del Piano 10 50019 Sesto Fiorentino Firenze Italy
3. Norwegian Institute of Bioeconomy Research; Post Box 115 1431 Ås Norway
4. Urals Division of the Russian Academy of Sciences; Institute of Plant and Animal Ecology; 8 Marta Str., 202 620144 Ekaterinburg Russia
5. Swiss Federal Research Institute for Forest, Snow and Landscape Research (WSL); Zürcherstrasse 111 CH-8903 Birmendsdorf Switzerland
6. Vavilov Institute of General Genetics; Russian Academy of Sciences; Gubkin str. 3 119991 Moscow Russia
7. Environmental Change Research Unit (ECRU); Department of Environmental Sciences; University of Helsinki; PO Box 65 FI-00014 Helsinki Finland