1. German Center for Integrative Biodiversity Research (iDiv) Halle‐Jena‐Leipzig Deutscher Platz 5e Leipzig 04103 Germany
2. Naturalis Biodiversity Centre P.O. Box 9517 Leiden 2300RA the Netherlands
3. Department of Biology University of Fribourg 1700 Fribourg, Ch. de Musee 10 Switzerland
4. Gothenburg Global Biodiversity Center University of Gothenburg Box 461 Gothenburg 405 30 Sweden
5. Plant Biology and Conservation Northwestern University Evanston IL 60208 U.S.A.
6. Institute of Biology Martin Luther University Halle‐Wittenberg Am Kirchtor 1, 06108 Halle (Saale) Germany
7. Department of Community Ecology, Helmholtz Centre for Environmental Research ‐ UFZ Theodor‐Lieser‐Strasse 4, 06120 Halle (Saale) Germany