1. Department of Renewable Resources University of Alberta Edmonton Canada
2. Now at Ecohydrology and Biogeochemistry Group Institute of Landscape Ecology, University of Münster Münster Germany
3. Department of Plant and Wildlife Sciences Brigham Young University Provo UT USA
4. Department of Earth Ocean and Atmospheric Science Florida State University Tallahassee FL USA
5. Department of Earth System Science University of California Irvine CA USA
6. School of Environmental Sciences University of Liverpool Liverpool UK
7. Department of Earth Sciences Dalhousie University Halifax Canada
8. Laboratoire Ecologie Fonctionnelle et Environnement Université de Toulouse, CNRS Toulouse France
9. NEIF Radiocarbon Laboratory, Scottish Enterprise Technology Park, Rankine Avenue East Kilbride UK
10. Geography, College of Life and Environmental Sciences University of Exeter Exeter UK
11. Max Planck Institute for Biogeochemistry Jena Germany
12. Department of Geography National University of Singapore Singapore Singapore
13. Woodwell Climate Research Center Falmouth MA USA
14. National Park Service, Arctic Network Anchorage AK USA
15. Yale School of Forestry and Environmental Studies New Haven CT USA
16. Ecosystems and Global Change Group, Department of Plant Sciences University of Cambridge Cambridge UK
17. Department of Biological Sciences University of Alberta Edmonton Canada
18. Department of Biological Sciences Northern Arizona University Flagstaff AZ USA
19. Department of Integrative Biology University of Guelph Guelph Canada
20. Water and Environmental Research Center University of Alaska Fairbanks Fairbanks AK USA