1. Department of Systematic Botany and Functional Biodiversity; Institute of Biology; University of Leipzig; Johannisallee 21 D-04103 Leipzig Germany
2. Plant Ecology and Nature Conservation Group; Wageningen University; PO box 47 6700 AA Wageningen The Netherlands
3. Department of Experimental Plant Ecology; Institute for Water and Wetland Research; Radboud University; Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
4. Department of Hydrogeology; Institute of Geosciences; Friedrich-Schiller-University Jena; Burgweg 11 D-07749 Jena Germany
5. Department of Conservation Biology; Helmholtz Centre for Environmental Research - UFZ; Permoserstraße 15 D-04318 Leipzig Germany
6. Swiss Federal Institute for Forest; Snow and Landscape Research WSL; Zürcherstrasse 111 CH-8903 Birmensdorf Switzerland
7. Berlin-Brandenburg Institute of Advanced Biodiversity Research (BBIB); D-14195 Berlin Germany
8. Max Planck Institute for Biogeochemistry; Hans-Knoell-Straße 24 D-07745 Jena Germany
9. Faculty of Biology, Geobotany; University of Freiburg; Schänzlestrasse 1 D-79104 Freiburg Germany
10. German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig; Deutscher Platz 5e D-04103 Leipzig Germany