1. Norwegian Institute for Nature Research Oslo Norway
2. Environment and Climate Change Canada National Wildlife Research Centre Ottawa ON Canada
3. Freshwater Biological Section Department of Biology University of Copenhagen Copenhagen __ Denmark
4. Alaska Center for Conservation Science University of Alaska Anchorage Anchorage AK U.S.A.
5. Institute of Biophysics Krasnoyarsk Science Center Siberian Branch of Russian Academy of Sciences Krasnoyarsk Russia
6. Institute of Fundamental Biology and Biotechnology Siberian Federal University Krasnoyarsk Russia
7. Institute of Biology Komi Scientific CentreUral Branch of Russian Academy of Sciences Syktyvkar Russia
8. Canadian Rivers Institute and Department of Biology University of New Brunswick Fredericton NB Canada
9. Natural History Museum of K__pavogur K__pavogur Iceland
10. Norwegian Institute for Nature Research Trondheim Norway
11. Department of General Ecology and Hydrobiology Biological Faculty Lomonosov Moscow State University Moscow Russia
12. State Nature Reserve Wrangel Island Pevek, Chukotka Autonomous Region Russia
13. D__partement des sciences fondamentales Universit__ du Qu__bec __ Chicoutimi Saguenay QC Canada
14. Centre for Northern Studies (CEN) Universit__ Laval Quebec City QC Canada
15. Paleoecological Environmental Assessment and Research Laboratory (PEARL) Department of Biology Queen___s University Kingston ON Canada
16. Department of Aquatic Sciences and Assessment Swedish University of Agricultural Sciences Uppsala Sweden
17. Lammi Biological Station University of Helsinki Lammi Finland