1. GeoBiosphere Science Centre, Department of Geology, Lund University, Sölvegatan 12, SE-223 62 Lund, Sweden.
2. Institute of Marine Sciences, University of North Carolina at Chapel Hill, 3431 Arendell Street, Morehead City, NC 28557, USA.
3. Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, NY, 14873, USA.
4. University of Maryland Center for Environmental Science, Post Office Box 775, Cambridge, MD 21613, USA.
5. International Geosphere-Biosphere Programme, Royal Swedish Academy of Sciences, Box 50005, SE-104 05 Stockholm, Sweden.
6. Florida Sea Grant, University of Florida, Gainesville, FL 32611, USA.
7. Ecologie des Systèmes Aquatiques, Université Libre de Bruxelles, Campus Plaine CP 221, B1050 Brussels, Belgium.
8. Cary Institute of Ecosystem Studies, Box AB, Millbrook, NY, 12545, USA.