1. Integrative Freshwater Ecology, Centre for Advanced Studies of Blanes, Spanish Research Council (CSIC), Blanes, Spain
2. Theoretical and Computational Ecology, Centre for Advanced Studies of Blanes, Spanish Research Council (CSIC), Blanes, Spain
3. Complex Systems Group, Department of Applied Mathematics, Universidad Politécnica de Madrid, Madrid, Spain
4. Department of Environmental Science, University of Arizona, Tucson, Arizona, USA