1. Institute of Oceanology Polish Academy of Sciences; Sopot Poland
2. Norwegian Polar Institute, Fram Centre; Tromsø Norway
3. Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Polar Biological Oceanography; Bremerhaven Germany
4. Department of Arctic and Marine Biology; UiT - Arctic University of Norway; Tromsø Norway