1. German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig; Deutscher Platz 5e 04103 Leipzig Germany
2. Institute of Biology; University of Leipzig; Johannisallee 21 04103 Leipzig Germany
3. CNRS; Ecotron - UPS 3248; Campus Baillarguet 34980 Montferrier-sur-Lez France
4. CNRS; Centre Centre d'Ecologie Fonctionnelle et Evolutive (CEFE, UMR-5175); 1919 Route de Mende 34293 Montpellier France
5. Institute of Plant Sciences; University of Bern; Altenbergrain 21 CH-3013 Bern Switzerland
6. Institute of Evolutionary Biology and Environmental Studies; University of Zurich; Winterthurerstrasse 190 CH-8057 Zurich Switzerland
7. UFZ; Helmholtz Centre for Environmental Research; Community Ecology; Theodor-Lieser-Strasse 4 06120 Halle Germany
8. Department of Life Sciences; Imperial College London; Silwood Park; Ascot Berkshire SL5 8JL UK
9. Hawkesbury Institute for the Environment; University of Western Sydney; Locked Bag 1797 Penrith NSW 2751 Australia
10. Department of Forest Resources; University of Minnesota; 1530 North Cleveland Avenue St. Paul MN 55108 USA
11. J.F. Blumenbach Institute of Zoology and Anthropology; Georg August University Göttingen; Berliner Strasse 28 Göttingen 37073 Germany
12. Department of Ecology, Evolution and Behavior; University of Minnesota; St Paul MN 55108 USA
13. State Key Laboratory of Pollution Control and Resource Reuse; School of the Environment; Xianlin Avenue 163 210023 Nanjing China
14. Institute of Ecology; Friedrich Schiller University Jena; Dornburger Str. 159 07743 Jena Germany