1. Norwegian Institute for Nature Research; FRAM-High North Research Centre on Climate and the Environment; Tromsø Norway
2. Norwegian Environment Agency; Trondheim; Norway
3. Department of Aquatic Sciences and Assessment; Swedish University of Agricultural Sciences; Uppsala Sweden
4. Norwegian Institute for Air Research; FRAM-High North Research Centre on Climate and the Environment; Tromsø Norway
5. Department of Arctic and Marine Biology; UiT The Arctic University of Norway; Tromsø Norway