1. Norwegian Institute for Nature Research, P.O. Box 5685 Sluppen, Trondheim N-7485, Norway
2. Uni Research Environment, P.O. Box 7810, Bergen N-5020, Norway
3. Institute of Marine Research, P.O. Box 1870 Nordnes, Bergen N-5817, Norway
4. Norwegian Institute for Water Research, Gaustadalléen 21, Oslo N-0349, Norway
5. Norwegian Veterinary Institute, P.O. Box 750 Sentrum, Oslo N-0106, Norway
6. UiT The Arctic University of Norway, Tromsø N-9037, Norway
7. Department of Biosciences, University of Oslo, Centre for Ecological and Evolutionary Synthesis, P.O. Box 1066, Blindern, Oslo N-0316, Norway