1. IFREMER – Département Halieutique de Manche – Mer du Nord, 150 Quai Gambetta, BP 699, 62321 Boulogne s/mer, France.
2. Joint Research Centre – Directorate D, Sustainable Resources – Unit D.0, Water and Marine Resources – TP 051, Via Enrico Fermi 2749, 21027 Ispra (VA), Italy.
3. Faculty of Life and Environmental Sciences, University of Iceland, 101 Reykjavík, Iceland.
4. UMR 985 ESE Ecology and Ecosystem Health, Agrocampus Ouest, INRA, 35042 Rennes, France.
5. IFREMER – Département Ecologie et Modèles pour l’Halieutique, Rue de l’Ile d’Yeu, BP 21105, 44311 Nantes cedex 03, France.