1. Institute for Evolution and Biodiversity, University of Münster, Hüfferstrasse 1, 48149 Münster, Germany
2. Evolutionary Botany Laboratory, University of Neuchâtel, Rue Emile-Argand 11, 2009 Neuchâtel, Switzerland
3. Animal Ecology, VU University, De Boelelaan 1085, 1081 Amsterdam, The Netherlands
4. Plant Ecology and Systematics, Department of Ecology, Lund University, Ecology Building, 223 62 Lund, Sweden
5. Department of Biology, Colorado State University, Fort Collins, CO 80523, USA
6. Animal Evolutionary Ecology, University of Tübingen, Auf der Morgenstelle 28, 72076 Tübingen, Germany