1. Geography Research Unit; University of Oulu; PO Box 3000 FI 90014 Oulu Finland
2. Department of Aquatic Ecology and Environmental Biology; Institute for Water and Wetland Research; Radboud University; Heyendaalseweg 135 6525AJ Nijmegen The Netherlands
3. Institute of Agriculture; Tokyo University of Agricultural and Technology; 3-5-8 Saiwaicho Fuchu Tokyo 183 8509 Japan
4. Department F.-A. Forel for Environmental and Aquatic Sciences; University of Geneva; Bd Carl Vogt 66 CH 1205 Geneva Switzerland
5. Department of Life and Environmental Sciences; University of Cagliari; Viale S. Ignazio da Laconi 11 1113 09123 Cagliari Italy
6. Department of Chemistry; Life Sciences and Environmental Sustainability; University of Parma; Parco Area delle Scienze 11/A 43124 Parma Italy
7. Departamento de Botânica; Museu Nacional; Universidade Federal do Rio de Janeiro; Quinta da Boa Vista 20940 040 Rio de Janeiro RJ Brazil
8. Environment and Climate Change Canada; 867 Lakeshore Rd Burlington ON L7S 1A1 Canada
9. Centre d'Estudis Avançats de Blanes (CEAB); Consejo Superior de Investigaciones Científicas (CSIC); C/ Accés a la Cala St. Francesc 14 17300 Blanes Spain
10. National Institute of Water and Atmospheric Research Limited; PO Box 11115 Hamilton New Zealand
11. Department of Aquatic Sciences and Assessment; Swedish University of Agricultural Sciences (SLU); PO Box 7050 SE 750 07 Uppsala Sweden
12. Department of Wildlife; Fish, and Environmental Studies; Swedish University of Agricultural Sciences (SLU); SE 901 83 Umeå Sweden
13. Faculty of Biology; University of Plovdiv; Plovdiv 4000 Bulgaria
14. Tour du Valat; Research Institute for the conservation of Mediterranean wetlands; Le Sambuc 13200 Arles France
15. Center for Limnology; University of Wisconsin; 680 N Park St. Madison WI 53704 USA
16. Finnish Environment Institute; Freshwater Centre; PO Box 413 FI 90014 Oulu Finland
17. Fisheries and Aquatic Sciences; School of Forest Resources and Conservation; Institute of Food and Agricultural Services; University of Florida; 7922 NW 71st Street Gainesville FL 32609 USA
18. Hepia; University of Applied Sciences and Arts Western Switzerland; 150 route de Presinge CH 1254 Jussy/Genève Switzerland
19. Department of Freshwater Assessment Methods and Monitoring; Institute of Environmental Protection-National Research Institute; Warsaw Poland
20. Department of Bioscience; Aarhus University; Vejsøvej 25 8600 Silkeborg Denmark
21. Key Laboratory for Environment and Disaster Monitoring and Evaluation of Hubei Province; Institute of Geodesy and Geophysics; Chinese Academy of Sciences; Wuhan 430077 China
22. Department of Tisza River Research; MTA Centre for Ecological Research; Bem tér 18/C H 4026 Debrecen Hungary
23. Norwegian Institute for Water Research (NIVA); Gaustadalléen 21 0349 Oslo Norway
24. Wisconsin Department of Natural Resources; 2801 Progress Rd. Madison WI 53716 USA
25. Department of Biology; Research Group in Limnology; Ichthyology and Aquaculture-Nupélia; State University of Maringá; Av. Colombo 5790 Bloco H90 CEP-87020-900 Mringá PR Brazil
26. Faculty of Sciences; Toho University; 2-2-1 Miyama Funabashi Chiba 274-8510 Japan
27. Laboratory of Botany, Mycology and Environment; Faculty of Sciences; Mohammed V University in Rabat; 4 avenue Ibn Battouta B.P. 1014 RP Rabat Morocco
28. Department of Biology; Faculty of Science and Technology; Moulay Ismail University; PB 509 Boutalamine Errachidia Morocco
29. Illinois Natural History Survey; Prairie Research Institute; University of Illinois; 1816 South Oak Street Champaign IL 61820 USA
30. Bavarian Environment Agency; Demollstraße 31 82407 Wielenbach Germany
31. State Key Laboratory of Freshwater Ecology and Biotechnology; Institute of Hydrobiology; Chinese Academy of Sciences; Wuhan 430072 China
32. University of Chinese Academy of Sciences; Beijing 100049 China
33. Biological and Environmental Science; University of Stirling; Stirling FK9 4LA UK
34. School of Life Sciences; Anqing Normal University; Anqing 246011 China
35. Finnish Environment Institute; Natural Environment Centre; Biodiversity; PO Box 413 FI 90014 Oulu Finland