1. Groningen Institute for Evolutionary Life Sciences, University of Groningen, PO Box 11103, 9700 CC Groningen, The Netherlands
2. Department of Marine Ecology, NIOZ Royal Netherlands Institute for Sea Research, PO Box 59, 1790 AB Den Burg, Texel, The Netherlands
3. Altenburg and Wymenga Ecological Consultants, Suderwei 2, 9269 TZ Veenwouden, The Netherlands
4. Department of Environmental Engineering Sciences, University of Florida, Gainesville, FL 32611, USA
5. Aquatic Ecology and Environmental Biology Group, Institute for Wetland and Water Research, Radboud University Nijmegen, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
6. Smithsonian Tropical Research Institute, Apartado 0843-03092, Balboa, Ancon, Republic of Panama
7. Institute for Marine Resources and Ecosystems, Haringkade 1, 1976 CP IJmuiden, The Netherlands
8. Division of Marine Science and Conservation, Duke University, Beaufort, NC 28516, USA
9. Centre for Estuarine and Marine Ecology, NIOZ Royal Netherlands Institute for Sea Research, PO Box 140, 4400 AC Yerseke, The Netherlands
10. Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, PO Box 94248, 1090 GE Amsterdam, The Netherlands