1. Department of Biosciences; Centre for Ecological and Evolutionary Synthesis (CEES); University of Oslo; Oslo Norway
2. Norwegian Water Resource and Energy Directorate; Oslo Norway
3. Jerstad Viltforvaltning; Mandal Norway
4. Norwegian Institute for Nature Research; Trondheim Norway
5. Faculty of Environmental Sciences and Natural Resource Management; Norwegian University of Life Sciences; Ås Norway
6. Freshwater and Inland Fisheries Laboratory; Natural History Museum; University of Oslo; Oslo Norway
7. Norwegian Institute for Nature Research; Oslo Norway