1. Nordisk Fond for Miljø og Udvikling; Skindergade 23-III DK-1159 Copenhagen K Denmark
2. Department of Agriculture and Ecology; Faculty of Life Sciences, Copenhagen University; Højbakkegaard Alle 30 DK-2630 Taastrup Denmark
3. Centre for Macroecology, Evolution and Climate, Biology Department; Copenhagen University, Universitetsparken 15; DK-2100 Copenhagen Denmark
4. World Wildlife Fund USA, 1250 24th Street NW; Washington DC 20037-1193 USA
5. United Nations Environment Programme World Conservation Monitoring Centre (UNEP-WCMC); 219 Huntingdon Road Cambridge CB3 0DL UK
6. Department of Agriculture and Ecology; Faculty of Life Sciences, Copenhagen University; Thorvaldsensvej 40 DK-1871 Frederiksberg Denmark
7. Cornell Lab of Ornithology; 159 Sapsucker Woods Road Ithaca NY 14850 USA
8. Danish Institute of International Studies; Strandgade 56 DK-1401 Copenhagen K Denmark
9. Norwegian Institute for Nature Research, Postboks 5685, Sluppen; N-7485 Trondheim Norway
10. Ministry of Fisheries; Hunting and Agriculture, Government of Greenland; P.O. Box 269 DK-3900 Nuuk Greenland
11. Arctic Research Centre; Department of Bioscience, Aarhus University; DK-8000 Aarhus C Denmark