[1] Woods Hole Oceanog Inst, Dept Biol, Woods Hole, MA 02543 USA
[2] Plymouth Marine Lab, Prospect Pl, Plymouth PL1 3DH, Devon, England
[3] Marine Res Inst, POB 1390,Sklugata 4, IS-121 Reykjavik, Iceland
[4] Natl Marine Fisheries Res Inst, Dept Fisheries Oceanog & Marine Ecol, Ul Kollataja 91, PL-81332 Gdynia, Poland
[5] Inst Marine Res, POB 1870, N-5017 Bergen, Norway
[6] Louisiana State Univ, Coll Coast &Environment, 2271 Energy,Coast & Environm Bldg, Baton Rouge, LA 70803 USA
[7] Marine Scotland Sci, 375 Victoria Rd, Aberdeen AB11 9DB, Scotland
[8] NOAA, NMFS Sci & Technol, Marine Ecosyst Div, Silver Spring, MD 20910 USA
[9] UNESCO, Intergovernmental Oceanog Commiss, Head Ocean Sci Sect, 1 Rue Miollis, F-75015 Paris, France