1 Institute for Land Water and Society, Charles Sturt University, Albury, New South Wales 2640, Australia.
2 Quantitative and Applied Ecology Group, School of Botany, The University of Melbourne, Melbourne, Victoria 3010, Australia.
3 Murray-Darling Freshwater Research Centre, LaTrobe University, PO Box 821, Wodonga, Victoria 3689, Australia.
4 Landcare Research, PO Box 69040, Lincoln 7640, New Zealand.
5 Laboratoire Evolution et Diversité Biologique (EDB UMR 5174), Université de Toulouse, CNRS, ENFA, UPS, 118 route de Narbonne, F-31062 Toulouse, France.
6 Institute of Environmental Sustainability, Loyola University Chicago, Chicago, Illinois 60660, USA.
7 Research Institute for the Environment and Livelihoods, School of Environment, Charles Darwin University, Darwin, Northern Territory 0909, Australia.
8 Commonwealth Scientific and Industrial Research Organisation, Canberra, Australian Capital Territory 2601, Australia.
9 Center for Watershed Sciences, University of California, Davis, California 95616, USA.
10 School of Aquatic and Fishery Sciences, University of Washington, Seattle, Washington 98195, USA.