1 Department of Aquatic Ecology and Water Quality Management, Wageningen University, P.O. Box 47, 6700 AA Wageningen, The Netherlands. Electronic address: Marten.Scheffer@wur.nl.
2 Department of Aquatic Ecology and Water Quality Management, Wageningen University, P.O. Box 47, 6700 AA Wageningen, The Netherlands; Department of Animal and Plant Sciences, University of Sheffield, Sheffield, UK.
3 Systems Ecology, Department of Ecological Science, Faculty of Earth and Life Sciences, Free University Amsterdam, De Boelelaan 1085, 1081 HV Amsterdam, The Netherlands.
4 Karlsruhe Institute of Technology, Institute of Meteorology and Climate Research/Atmospheric Environmental Research (IMK-IFU), Garmisch-Partenkirchen, Germany.
5 Resource Ecology Group, Wageningen University, P.O. Box 47, 6700 AA Wageningen, The Netherlands.
6 Department of Aquatic Ecology and Water Quality Management, Wageningen University, P.O. Box 47, 6700 AA Wageningen, The Netherlands.
7 Department of Aquatic Ecology and Water Quality Management, Wageningen University, P.O. Box 47, 6700 AA Wageningen, The Netherlands; School of Life Sciences, Nanjing University, 22 Hankou Road, Nanjing 210093, People's Republic of China.