| AAPC | Center for Environmental Policy | Lithuania |
| HELCOM | Helsinki Commission | – |
| IfW | Kiel Institute for the World Economy | Germany |
| LIAE | Latvian Institute of Aquatic Ecology | Latvia |
| LUKE | Natural Resources Institute Finland | Finland |
| SLU | Swedish University of Agricultural Sciences | Sweden |
| SMHI | Swedish Meteorological and Hydrological Institute | Sweden |
| SU | Stockholm University | Sweden |
| SwAM | Swedish Agency for Marine and Water Management | Sweden |
| SYKE | Finnish environment institute | Finland |
| TalTech | Tallinn University of Technology | Estonia |
| TiHo | University of Veterinary Medicine Hannover | Germany |
| UHAM-CEN | Center for Earth System Research and Sustainability, University of Hamburg | Germany |
| UT | University of Tartu | Estonia |
