1. GEOMAR, Helmholtz-Zentrum
für Ozeanforschung Kiel, Düsternbrooker Weg 20, 24105 Kiel, Germany
2. Great Lakes Laboratory
for Fisheries and Aquatic Sciences, Fisheries and Oceans Canada, Burlington, Ontario, L7S 1A1, Canada
3. Gollasch Consulting, Grosse Brunnenstrasse 61, 22763 Hamburg, Germany
4. Dr. Matej David
Consult, Korte 13e, 6310 Izola, Slovenia