1. Eawag, Swiss Federal Institute of Aquatic Science and Technology; CH-8600 Dübendorf Switzerland
2. Institute of Integrative Biology; ETH Zurich; CH-8092 Zurich Switzerland
3. Department of Zoology; University of Cambridge; CB2 3EJ Cambridge UK
4. Limnological Institute; University of Konstanz; D-78464 Konstanz Germany
5. Laboratory of Aquatic Ecology, Evolution and Conservation; KU Leuven; B-3000 Leuven Belgium
6. Laboratory of Molecular Ecology; Institute of Animal Physiology and Genetics; Academy of Sciences of the Czech Republic; Rumburská 89 27721 Liběchov Czech Republic
7. Institute for Lake Research; D-88085 Langenargen Germany