1. Dept of Fish Ecology and Evolution, Eawag, Swiss Federal Inst. of Aquatic Science and Technology, Center of Ecology, Evolution and Biochemistry Kastanienbaum Switzerland
2. Aquatic Ecology and Evolution, Inst. of Ecology and Evolution, Univ. of Bern Bern Switzerland
3. Dept of Surface Waters – Research and Management, Eawag, Swiss Federal Inst. of Aquatic Science and Technology, Center of Ecology, Evolution and Biochemistry Kastanienbaum Switzerland
4. Ecosystem Physiology, Univ. of Freiburg Freiburg Germany
5. ECOMARE, CESAM – Center for Environmental and Marine Studies, Dept of Biology, Univ. of Aveiro, Campus Universitário de Santiago Aveiro Portugal