1. Netherlands Institute for Sea Research and Utrecht University, Department of Estuarine and Delta Systems, Korringaweg 7, PO Box 140, Yerseke 4401 NT, the Netherlands
2. Ecosystem Management Research Group, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Belgium
3. IFREMER, Unité Ecologie et Modèles pour l’Halieutique, rue de l’Ile d’Yeu, BP 21105, 44311 Nantes Cedex 3, France
4. Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory, Pakefield Road, Lowestoft NR33 0HT, UK
5. Wageningen Marine Research, Wageningen UR, IJmuiden 1970 AB, the Netherlands
6. Plymouth Marine Laboratory, Prospect Place, Plymouth PL1 3DH, UK