1. Institute of Ecology, Evolution and Diversity; J. W. Goethe University; Max-von-Laue-Str. 13 B 60438 Frankfurt am Main Germany
2. Biodiversity; Macroecology and Conservation Biogeography Group; Faculty of Forest Sciences; University of Göttingen; Göttingen Germany
3. Institute of Ecology; Friedrich Schiller University Jena; Dornburger Str. 159 07743 Jena Germany
4. Senckenberg Biodiversity and Climate Research Centre (BiK-F); Senckenberganlage 25 60325 Frankfurt am Main Germany