1. Tyndall Centre for Climate Change Research, School of Environmental Sciences, University of East Anglia, Norwich, NR4 7TJ, UK.
2. Centre for Coral Reef Biodiversity, School of Marine Biology and Aquaculture, James Cook University, Townsville QLD 4811, Australia.
3. Centre for Transdisciplinary Environmental Research and Department of Systems Ecology, Stockholm University, SE-10691 Stockholm, Sweden.
4. Center for Limnology, University of Wisconsin, Madison, WI 53706–1492, USA.
5. Stockholm Environment Institute, Box 2142, SE 103 14 Stockholm, Sweden.