1. Department of Marine Sciences University of Gothenburg Gothenburg Sweden
2. Marine Research Centre Finnish Environment Institute (SYKE) Helsinki Finland
3. Biological Oceanography Leibniz Institute for Baltic Sea Research Warnemünde Rostock Germany
4. Marine Biological Section University of Copenhagen Helsingør Denmark
5. Department of Marine Sciences – Tjärnö University of Gothenburg Strömstad Sweden
6. Aquatic Ecology, Department of Biology Lund University Lund Sweden