1. Aquatic Biogeochemistry Research Unit (ABRU) Ecosystems and Environment Research Program Faculty of Biological and Environmental Sciences University of Helsinki Helsinki Finland
2. Tvärminne Zoological Station University of Helsinki Hanko Finland
3. Department of Geosciences and Geography Environmental Geochemistry Group Faculty of Science University of Helsinki Helsinki Finland
4. Department of Earth Sciences (Geochemistry) Faculty of Geosciences Utrecht University Utrecht The Netherlands
5. Baltic Nest Institute Baltic Sea Centre Stockholm University Stockholm Sweden
6. Fisheries & Oceans Canada Bedford Institute of Oceanography Dartmouth NS Canada