1. Department of Ecology, Environment and Plant Sciences Stockholm University Stockholm Sweden
2. AquaBiota Water Research Stockholm Sweden
3. Institute of Zoology Zoological Society of London, Regent's Park London UK
4. Department of Aquatic Resources Swedish University of Agricultural Sciences Lysekil Sweden
5. The County Administrative Board of Västra Götaland Gothenburg Sweden
6. Department of Biological and Environmental Sciences University of Gothenburg Fiskebäckskil Sweden