1. Center for Macroecology, Evolution and Climate; Natural History Museum of Denmark; University of Copenhagen; Universitetsparken 15, 2100 Copenhagen E Denmark
2. United Nations Environment Programme World Conservation Monitoring Centre; 219 Huntingdon Road Cambridge CB3 0DL United Kingdom
3. Microsoft Research; 21 Station Road Cambridge CB1 2FB United Kingdom
4. World Wildlife Fund; 1250 24th St. NW Washington D.C. 20037 U.S.A.