1. Research Unit in Environmental and Evolutionary Ecology; University of Namur; rue de Bruxelles 61 B-5000 Namur Belgium
2. Biodiversity and Plasticity in Hydrosystems; CNRS UMR 5023 LEHNA; University Lyon 1; Bât Forel 69622 Villeurbanne Cedex France
3. Aquatic Environments, Ecology and Pollution; UR MALY; Irstea; 5 rue de la Doua, 70077 69626 Villeurbanne France
4. Laboratory of Fish Demography and Hydroecology; University of Liège; Belgium
5. Interdisciplinary Laboratory for Continental Environments; CNRS UMR 7360 LIEC; University of Lorraine; Campus Bridoux 57070 Metz France