1. Plant Conservation and Population Biology; Department Biology; University of Leuven; Kasteelpark Arenberg 31 Leuven B-3001 Belgium
2. Lancaster Environment Centre; Lancaster University; Lancaster LA14YQ United Kingdom
3. Department of Physiology and Biometrics; Faculty of Veterinary Medicine; University of Ghent; Merelbeke Belgium
4. Department of Environment, Earth and Ecosystems; Open University; Milton Keynes MK7 6AA United Kingdom
5. Division Soil and Water Management; Department Earth and Environmental Sciences; University of Leuven; Kasteelpark Arenberg 20 Leuven B-3001 Belgium
6. Institute for Water and Wetland Research Radboud University; P.O. Box 9010 Nijmegen 6500 GL The Netherlands
7. B-WARE Research Centre; Radboud University; P.O. Box 9010 Nijmegen 6525 ED The Netherlands
8. KWR Watercycle Research Institute; Postbus 1072 Nieuwegein NL-3430 BB The Netherlands
9. Université de Bordeaux; UMR 1202 BioGeCo, Bât B8 RdC, Av. des Facultés Talence F-33405 France
10. Laboratoire des Interactions Ecotoxicologie; Biodiversité et Ecosystèmes; UMR CNRS 7146; U.F.R. Sci. F.A.; Université Paul Verlaine; Campus Bridoux, Avenue du Général Delestraint Metz F 57070 France
11. Department of Environmental and Geographical Science; Manchester Metropolitan University; Manchester M15GD United Kingdom
12. Institute of Ecology, FB 2; University of Bremen; Leobener Str. Bremen DE-28359 Germany