1. National Institute of Water and Atmospheric Research, Private Bag 14-901 Kilbirnie, Wellington, New Zealand
2. National Institute for Aquatic Resources, Technical University of Denmark, Jægersborg Allé 1, Charlottenlund Castle, Charlottenlund DK-2920, Denmark
3. Estonian Marine Institute, University of Tartu, Lootsi 2a, Pärnu 80012, Estonia