1. Institute of Marine Research, PO Box 1870 Nordnes, 5817 Bergen, Norway
2. Department of Biosciences, University of Oslo, PO Box 1066, 0316 Oslo, Norway
3. Institute of Marine Research, Framsenteret, PO Box 6606 Stakkevollan, 9296 Tromsø, Norway
4. Institute of Marine Research, Sauganeset 16, 5392 Storebø, Norway
5. Institute of Marine Research, Nye Flødevigveien 20, 4817 His, Norway
6. Centre for Coastal Research (CCR), Department of Natural Sciences, University of Agder, PO Box 422, 4604 Kristiansand, Norway