1. Biology Department/Rubenstein Ecosystem Science Laboratory University of Vermont Burlington VT USA
2. Department of Aquatic Ecology Swiss Federal Institute of Aquatic Sciences (Eawag) Dübendorf Switzerland
3. Department of Ecosystem Research Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB) Berlin Germany
4. SUNY Oneonta Biological Field Station Oneonta NY USA
5. State of Maine Department of Environmental Protection Augusta ME USA
6. Department of Experimental Limnology Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB) Stechlin Germany
7. Legacies of Agricultural Pollutants Department of Earth and Environmental Sciences University of Waterloo Waterloo Ontario Canada
8. Institute of Biochemistry and Biology Postdam University Potsdam Germany
9. Institute of Hydrobiology Biology Centre of the Czech Academy of Sciences České Budějovice Czech Republic
10. Department of Biological Sciences Virginia Polytechnic Institute and State University Blacksburg VA USA
11. Itasca Biological Station University of Minnesota Lake Itasca MN USA
12. Institute of Agricultural and Environmental Sciences Estonian University of Life Sciences Tartu Estonia
13. Department of Civil and Environmental Engineering Michigan Technological University Houghton MI USA
14. Vermont Department of Environmental Conservation Montpelier VT USA
15. New Hampshire Department of Environmental Services Concord NH USA
16. Dorset Environmental Science Centre Ontario Ministry of Environment, Conservation and Parks Dorset Ontario Canada
17. Department of Biology Miami University Oxford OH USA
18. Upper Midwest Water Science Center U.S. Geological Survey Middleton WI USA
19. Cornell Biological Field Station Cornell University Bridgeport NY USA
20. Department of Environmental Science and Policy University of California Davis CA USA
21. Institute of Biology Irkutsk State University Irkutsk Russian Federation
22. Rubenstein Ecosystem Science Laboratory University of Vermont Burlington VT USA
23. Biology Department State University of New York College at Oneonta Oneonta NY USA
24. Section of Limnology Department of Ecology and Genetics Uppsala University Uppsala Sweden