1. Biology Department, Dalhousie University, Halifax, NS B3H 4J1, Canada.
2. School of Aquatic and Fishery Sciences, University of Washington, Seattle, WA 98195–5020, USA.
3. Scripps Institution of Oceanography, University of California-San Diego, La Jolla, CA 92093–0202, USA.
4. Graduate School of Oceanography, University of Rhode Island, Narragansett, RI 02882, USA.
5. Donald Bren School of Environmental Science and Management, University of California, Santa Barbara, CA 93106–5131, USA.
6. National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Woods Hole, MA 02543, USA.
7. Commonwealth Scientific and Industrial Research Organisation (CSIRO) Marine and Atmospheric Research, General Post Office Box 1538, Hobart, TAS 7001, Australia.
8. Centre for Environment, Fisheries and Aquaculture Science, Lowestoft NR33 0HT, UK.
9. School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, UK.
10. Ministry of Fisheries, Post Office Box 1020, Wellington, New Zealand.
11. Wildlife Conservation Society Marine Programs, Post Office Box 99470, Mombasa, Kenya.
12. Hopkins Marine Station, Stanford University, Pacific Grove, CA 93950, USA.
13. Centro Nacional Patagónico, 9120 Puerto Madryn, Argentina.
14. Institute for the Study of Earth, Oceans, and Space, University of New Hampshire, Durham, NH 03824–3525, USA.
15. Fisheries Centre, University of British Columbia, Vancouver, BC V6T 1Z4, Canada.