1. Scottish Association for Marine Science, Scottish Marine Institute, Dunbeg, Oban, PA37 1QA, UK
2. The University Centre in Svalbard, Postbox 156, 9171 Longyearbyen, Norway
3. Institute of Marine Research, N-9294 Tromsø, Norway
4. Formerly at: Geophysical Institute, University of Bergen, N-5007 Bergen, Norway
5. Deceased