1. Ocean and Earth Science National Oceanography Centre Southampton, University of Southampton Waterfront Campus, European Way, Southampton SO14 3ZH UK
2. Department of Environmental Science, Policy & Management University of California, Berkeley, 130 Mulford Hall #3114 Berkeley, CA 94720 USA
3. Centre for Environment, Fisheries and Aquaculture Science Pakefield Road, Lowestoft, Suffolk NR33 0HT UK
4. National Marine Fisheries Service Southwest Fisheries Science Center 110 Shaffer Road, Santa Cruz CA 95060 USA
5. Institute of Marine Sciences University of Portsmouth, Ferry Road Eastney, Hampshire PO4 9LY UK