1. Department of Aquatic Ecology, Netherlands Institute of Ecology (NIOO-KNAW), 6708 PB Wageningen, The Netherlands
2. Ecology and Biodiversity Group, Institute of Environmental Biology, Utrecht University, 3584 CH Utrecht, The Netherlands
3. Aquatic Ecology and Water Quality Management Group, Wageningen University, 6700 AA Wageningen, The Netherlands
4. École Polytechnique Fédérale de Lausanne (EPFL), School of Architecture, Civil and Environmental Engineering (ENAC), Laboratory of Ecological Systems (ECOS), Station 2, CH-1015 Lausanne, Switzerland
5. WSL, Swiss Federal Institute for Forest, Snow and Landscape Research, Research Unit Community Ecology, Site Lausanne, Station 2, CH-1015 Lausanne, Switzerland
6. University of Ferrara, Department of Life Science and Biotechnologies, Corso Ercole I d'Este 32, Ferrara 44121 Italy