1. Univ. of Natural Resources and Life Sciences (BOKU) Vienna Wien Austria
2. Technical Univ. of Munich Freising Germany
3. Berchtesgaden National Park Berchtesgaden Germany
4. Natural Resources Inst. Finland (Luke) Helsinki Finland
5. Dept of Forest Sciences, Univ. of Helsinki Finland
6. Center for Forest Ecology and Productivity, Russian Academy of Sciences Moscow Russia
7. Faculty of Forest Sciences, Swedish Univ. of Agricultural Sciences Skinnskatteberg Sweden
8. Forest Research Branch, Quebec Ministry of Natural Resources Quebec QC Canada
9. Natural Resources Canada, Canadian Forest Service, Laurentian Forestry Centre Québec QC Canada
10. Univ. of Northern British Columbia Terrace BC Canada
11. Earth Inst., Columbia Univ. New York City NY USA
12. Norwegian Inst. for Nature Research, Fram Centre Tromsø Norway
13. Estonian Univ. of Life Sciences Tartu Estonia
14. Dept of Biological Sciences, Center for Forest Research, Univ. of Quebec at Montreal Montreal Canada
15. Dept of Geology, Tallinn Univ. of Technology Tallinn Estonia
16. Field Science Center for Northern Biosphere, Hokkaido Univ. Horonobe Japan
17. Graduate School of Environment and Information Sciences, Yokohama National Univ. Yokohama Japan
18. Saint‐Petersburg State Univ., University Embankment St Petersburg Russia
19. Forest Research Inst. of the Karelian Research Centre, Russian Academy of Science Petrozavodsk Russia
20. ‘Yugyd Va’ National Park Vuktyl Komi Republic Russia
21. Natural Resources Canada, Canadian Forest Service – Atlantic Forestry Centre Fredericton NB Canada
22. ‘Denezhkin Kamen’ Nature Reserve Severouralsk Sverdlovsk region Russia