1. Environmental and Marine Biology, Åbo Akademi Univ. Turku Finland
2. Norwegian College of Fishery Science, UiT The Arctic Univ. of Norway Tromsø Norway
3. Centre for Ocean Life, National Inst. of Aquatic Resources (DTU‐Aqua), Technical Univ. of Denmark Kgs. Lyngby Denmark
4. National Marine Fisheries Research Inst. Gdynia Poland
5. Jurgensone and S. Strāķe, Latvian Inst. of Aquatic Ecology Riga Latvia
6. Inst. of Marine Ecosystem and Fishery Science, Center for Earth System Research and Sustainability, Univ. of Hamburg Hamburg Germany
7. Inst. of Food Safety, Animal Health and Environment BIOR Riga Latvia