1. ESE, Ecology and Ecosystem Health, Agrocampus Ouest, INRAE, Rennes 35042, France
2. EMH, Ecology and Models for Fisheries Science, IFREMER
3. National Institute of Aquatic Resources (DTU-Aqua), Technical University of Denmark, Kemitorvet, Building 202, 2800 Kgs. Lyngby, Denmark
4. Wageningen Marine Research (Ecological Dynamics Group), IJmuiden AB 1970, Netherlands
5. Virginia Institute of Marine Science, William & Mary, PO Box 1346, Gloucester Point, VA 23062, USA
6. University of Maryland, Center for Environmental Science, Horn Point Laboratory, PO Box 775, Cambridge, MD 21613, USA