1. Institute for Hydrobiology and Fisheries Science, University of Hamburg, Grosse Elbstrasse 133, 22767 Hamburg, Germany
2. Beijer Institute, Royal Swedish Academy of Sciences, PO Box 50005, 104 05 Stockholm, Sweden
3. Stockholm Resilience Centre, Stockholm University, Kräftriket 2B, 106 91 Stockholm, Sweden
4. SAHFOS, The Laboratory, Citadel Hill, The Hoe, Plymouth PL1 2PB, UK
5. Institute of Marine Sciences ISMAR, National Research Council of Italy CNR, Forte Santa Teresa, Loc Pozzuolo, Lerici, 19032 La Spezia, Italy
6. Centre for Marine and Coastal Policy Research, Marine Institute, Plymouth University, Plymouth PL4 8AA, UK