1. Leibniz Institute for Baltic Sea Research (IOW), Warnemünde, Seestr. 15, 18119 Rostock, Germany
2. Marine Research Centre, Finnish Environment Institute SYKE, PO Box 140, FI-00251 Helsinki, Finland
3. Hafok AB, 179 61 Stenhamra, Sweden
4. Coastal Research and Planning Institute, Klaipeda University, H. Manto Str. 84, LT-92294 Klaipėda, Lithuania
5. Department of Bioscience, Aarhus University, Frederiksborgvej 399, 4000 Roskilde, Denmark
6. Estonian Marine Institute, University of Tartu, Mäealuse 14, 12618 Tallinn, Estonia
7. Zoological Institute Russian Academy of Science, Universitetskaja nab. 1, 199034 St Petersburg, Russia
8. National Marine Fisheries Research Institute, ul. Kołłątaja 1, 81-332 Gdynia, Poland
9. Latvian Institute of Aquatic Ecology, Daugavgrīvas Str. 8, LV-1048 Riga, Latvia