Institution: | aSchool of Ocean Sciences, University of Wales Bangor, Askew Street, LL59 5AB Menai Bridge, Anglesey, Wales, UK bTechnical University of Denmark, National Institute for Aquatic Resources, Department of Marine Ecology and Aquaculture and University of Århus, Kavalergården 6, DK-2920 Charlottenlund, Denmark cWageningen IMARES, Institute for Marine Resources and Ecosystem Studies, PO Box 68, 1970 AB Ijmuiden, The Netherlands dCentre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory, Lowestoft NR33 0HT, UK eTechnical University of Denmark, National Institute for Aquatic Resources, Department of Inland Fisheries, Vejlsøvej 39, DK-8600 Silkeborg, Denmark fInstitute for Marine Research, Postboks 1870 Nordnes, 5817 Bergen, Norway gIFREMER, Nantes, France hEstonian Marine Institute, University of Tartu, Vana-Sauga 28, 80031 Pärnu, Estonia |