1. Nor-wegian Polar Institute, Polar Environmental Centre, N-9296 Tromsø, Norway;
2. Akvaplan-niva, Polar Environmental Centre, N-9296 Tromsø, Norway;
3. Norwegian College of Fishery Science, University of Tromsø, N-9037 Tromsø, Norway;
4. Alfred Wegener Institute, Postfach 120161, D-27515 Bremerhaven, Germany;
5. Institute of Oceanology, Polish Acad-emy of Sciences, 55 Powstancow Warszawy St., 81-712 Sopot, Poland;
6. University Courses on Svalbard, N-9171 Longyearbyen, Norway;
7. Scottish Association for Marine Science, Dunstaffnage Marine Laboratory, Oban, Argyll, PA37 1QA, UK;
8. Plymouth Marine Laboratory, Prospect Place, Plymouth, Devon, PL1 3DH, UK
9. Botanical Institute, Göteborg University, Box 461, SE-405 30 Göteborg, Sweden;
10. Marine Research Laboratory, Zoological Institute, Russian Academy of Sciences, Universitetskaya nab., 1, St. Petersburg 199034, Russia;
11. Komarov Botanical Institute, Russian Academy of Sciences, 2 Prof. Popov St., St. Petersburg 197276, Russia;
12. CNR - Institute of Protein Biochemistry and Enzymology, Via Marconi 12, 80125 Napoli, Italy;
13. ENEA, Marine Environment Research Centre, Box 224, 19100 La Spezia, Italy;
14. Norwegian Radiation Protection Authority, Polar Environmental Centre, N-9296 Tromsø, Norway.