[1] Dalhousie Univ, Dept Biol, Halifax, NS B3H 4J1, Canada
[2] Univ Washington, Sch Aquat & Fishery Sci, Seattle, WA 98195 USA
[3] Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA
[4] Univ Rhode Isl, Grad Sch Oceanog, Narragansett, RI 02882 USA
[5] Univ Calif Santa Barbara, Donald Bren Sch Environm Sci & Management, Santa Barbara, CA 93106 USA
[6] NOAA, Natl Marine Fisheries Serv, Woods Hole, MA 02543 USA
[7] CSIRO Marine & Atmospher Res, Hobart, Tas 7001, Australia
[8] Ctr Environm Fisheries & Aquaculture Sci, Lowestoft NR33 0HT, Suffolk, England
[9] Univ E Anglia, Sch Environm Sci, Norwich NR4 7TJ, Norfolk, England
[10] Minist Fisheries, Wellington, New Zealand
[11] Wildlife Conservat Soc Marine Programs, Mombasa, Kenya
[12] Stanford Univ, Hopkins Marine Stn, Pacific Grove, CA 93950 USA
[13] Ctr Nacl Patagon, RA-9120 Puerto Madryn, Argentina
[14] Univ New Hampshire, Inst Study Earth Oceans & Space, Durham, NH 03824 USA
[15] Univ British Columbia, Fisheries Ctr, Vancouver, BC V6T 1Z4, Canada