1. Institute of Life and Environmental Sciences University of Iceland Reykjavik Iceland
2. University Centre in Svalbard Longyearbyen Norway
3. Department of Biological Sciences University of Bergen Bergen Norway
4. Bjerknes Centre for Climate Research University of Bergen and NORCE Climate Bergen Norway
5. Center for Permafrost (CENPERM), Department of Geoscience and Natural Resource Management University of Copenhagen Copenhagen Denmark
6. Terrestrial Ecology Section, Department of Biology University of Copenhagen Copenhagen Denmark
7. Department of Evolution, Ecology, and Organismal Biology University of California Riverside Riverside California USA
8. Institute of Arctic and Alpine Research University of Colorado Boulder Boulder Colorado USA
9. Department of Biological and Environmental Sciences University of Gothenburg Gothenburg Sweden
10. Department of Ecology and Evolutionary Biology University of Connecticut Storrs Connecticut USA
11. Environmental Change Institute, School of Geography and the Environment University of Oxford Oxford UK
12. Department of Botany and Biodiversity Research Centre The University of British Columbia Vancouver British Columbia Canada
13. Faculty of Environmental Sciences and Natural Resource Management Ås Norway
14. Department of Biology Norwegian University of Science and Technology Trondheim Norway
15. Department of Ecology and Evolutionary Biology University of Arizona Tucson Arizona USA