1. Department of Environmental Biology Sapienza University of Rome Rome Italy
2. Institute of Ecology and Earth Sciences University of Tartu Tartu Estonia
3. Institute of Geography CEN –Center for Earth System Research and Sustainability University of Hamburg Hamburg Germany
4. Institute of Biology/Geobotany and Botanical Garden Martin Luther University Halle‐Wittenberg Halle Germany
5. German Centre for Integrative Biodiversity Research (iDiv) Halle‐Jena‐Leipzig Leipzig Germany
6. Institute of Botany of the Czech Academy of Sciences Průhonice Czech Republic
7. Department of Botany Faculty of Science University of South Bohemia České Budějovice Czech Republic
8. Biodiversity, Evolution and Ecology of Plants Institute of Plant Science and Microbiology University of Hamburg Hamburg Germany
9. Department of Plant Systematics University of Bayreuth Bayreuth Germany
10. Central Siberian Botanical Garden Siberian Branch Russian Academy of Sciences Novosibirsk Russia
11. UR “Ecologie et Dynamique des Systèmes Anthropisés” (EDYSAN UMR 7058 CNRS‐UPJV) Université de Picardie Jules Verne Amiens France
12. Department of Geographical and Sustainability Sciences University of Iowa Iowa City IA USA
13. Harry Butler Institute Murdoch University Perth Western Australia Australia
14. Departrment of Geography and Environmental Sciences Stellenbosch University Stellenbosch South Africa
15. Department of Botany and Biodiversity Research University of Vienna Vienna Austria
16. Botanical Garden – Center for Biological Diversity Conservation Polish Academy of Sciences Warszawa Poland
17. Institute of Biology University of Opole Opole Poland
18. Department of Biology University of North Carolina Chapel Hill NC USA
19. Department of Civil and Environmental Engineering University of the Andes Bogota Colombia
20. Institute of Botany, Plant Science and Biodiversity Centre Slovak Academy of Sciences Bratislava Slovakia
21. Department of Botany Charles University Prague Czech Republic
22. Department of Plant and Fungal Diversity and Resources Institute of Biodiversity and Ecosystem Research Bulgarian Academy of Sciences Sofia Bulgaria
23. Department of Physiological Diversity Helmholtz Center for Environmental Research – UFZ Leipzig Germany
24. Department of Ecology and Genetics University of Oulu Oulu Finland
25. Manaaki Whenua–Landcare Research Lincoln New Zealand
26. Research Unit of Biodiversity (CSUC/UO/PA) University of Oviedo Mieres Spain