1. Department of Biology, University of Copenhagen, Copenhagen, Denmark.
2. School of Life Sciences, Arizona State University, Tempe, AZ, USA.
3. Geography Research Unit, University of Oulu, Oulu, Finland.
4. Finnish Environment Institute, Helsinki, Finland.
5. Department of Bioscience, Aarhus University, Aarhus, Denmark.
6. Aquatic Ecology, Universität Duisburg-Essen, Duisburg, Germany.
7. Environment and Climate Change Canada, Ottawa, ON, Canada.
8. Department of Wildlife, Swedish University of Agricultural Sciences, Uppsala, Sweden.
9. Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Tartu, Estonia.
10. Department of Ecology and Environment, Poznán University of Life Sciences, Poznan, Poland.
11. Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark.
12. Norwegian Institute for Water Research, Oslo, Norway.
13. Prairie Research Institute, University of Illinois, Champaign, IL, USA
14. United Nations Environment Programme, Nairobi, Kenya.
15. Centre for Ecology & Hydrology, Bailrigg, Lancaster, UK.
16. School of Agriculture and Environment, The University of Western Australia, Perth, WA, Australia.