1. Department of Ecology and EvolutionStony Brook University, Stony BrookNew York
2. Biodiversity and Conservation Biology UnitSwiss Federal Research Center (WSL), Birmensdorf Switzerland
3. Department of Ecology, Faculty of ScienceCharles University, Prague 2 Czech Republic
4. Center for Theoretical Study, Charles University, Prague 1 Czech Republic
5. Center for Macroecology, Evolution and ClimateNatural History Museum of Denmark, University of CopenhagenCopenhagen Denmark