1. Department of Earth and Ecosystem Sciences, Lund University, SE-223 62 Lund, Sweden
2. National Environmental Research Institute, Aarhus University, DK-4000 Roskilde, Denmark
3. Latvian Institute of Aquatic Ecology, LV-1007 Riga, Latvia
4. Swedish Meteorological and Hydrological Institute, SE-426 71 Västra Frölunda, Sweden
5. Department of Biosciences, Environmental and Marine Biology, Åbo Akademi University, BioCity, FI-20520 Turku/Åbo, Finland
6. Russian State Hydrometeorological University, 195196 St. Petersburg, Russia
7. Baltic Nest Institute, Stockholm University, SE-106 91 Stockholm, Sweden
8. Department of Applied Environmental Science, Stockholm University, SE-114 18 Sweden
9. Estonian Marine Institute, University of Tartu, 12618 Tallinn, Estonia
10. Stockholm Vatten, SE-106 36 Stockholm, Sweden
11. Department of Systems Ecology, Stockholm University, SE-106 91 Stockholm, Sweden
12. Zoological Institute, Russian Academy of Science, 199034 St. Petersburg, Russia
13. Institute of Meteorology and Water, Management Maritime Branch, 81-342 Gdynia, Poland
14. Environmental Protection Agency, Department of Marine Research, LT-91149 Klaipeda, Lithuania
15. Bundesamt für Seeschifffahrt und Hydrographie, D-20359 Hamburg, Germany