1. Czech Academy of Sciences, Institute of Botany, Department of Invasion Ecology Průhonice CZ‐252 43 Czech Republic
2. Department of Ecology, Faculty of Science Charles University Viničná 7 Prague CZ‐128 44 Czech Republic
3. Centre for Invasion Biology, Department of Botany & Zoology Stellenbosch University Matieland 7602 South Africa
4. Bio‐Protection Research Centre Lincoln University Canterbury New Zealand
5. Department of Ecology and Evolutionary Biology University of Tennessee Knoxville TN U.S.A.
6. Department of Biology University of Fribourg Fribourg Switzerland
7. Centre for Biodiversity and Environment Research, Department of Genetics, Evolution, and Environment University College London London WC1E 6BT U.K.
8. Institute of Zoology Zoological Society of London, Regent's Park London NW1 4RY U.K.
9. Maritime Studies Program Williams College – Mystic Seaport 75 Greenmanville Mystic CT 06355 U.S.A.
10. Department of Biosciences Durham University, South Road Durham DH1 3LE U.K.
11. Division of Conservation Biology, Vegetation and Landscape Ecology, Department of Botany and Biodiversity Research University of Vienna Vienna Austria
12. Conservation Services South African National Parks Private Bag X402 Skukuza 1350 South Africa
13. ISPRA Institute for Environmental Protection and Research and Chair IUCN SSC Invasive Species Specialist Group Rome Italy
14. Leibniz‐Institute of Freshwater Ecology and Inland Fisheries (IGB) Müggelseedamm 310 Berlin 12587 Germany
15. Institute of Biology Freie Universität Berlin Königin‐Luise‐Str. 1‐3 Berlin 14195 Germany
16. Berlin‐Brandenburg Institute of Advanced Biodiversity Research (BBIB) Königin‐Luise‐Str. 2‐4 Berlin 14195 Germany
17. Department Community Ecology Helmholtz Centre for Environmental Research – UFZ Theodor‐Lieser‐Str. 4 Halle 06120 Germany
18. Geobotany & Botanical Garden Martin Luther University Halle‐Wittenberg Am Kirchtor 1 Halle 06108 Germany
19. German Centre for Integrative Biodiversity Research (iDiv) Halle‐Jena‐Leipzig Deutscher Platz 5e Leipzig 04103 Germany
20. US Forest Service Northern Research Station 180 Canfield St. Morgantown West Virginia U.S.A.
21. Faculty of Forestry and Wood Sciences Czech University of Life Sciences Prague Prague CZ‐165 00 Czech Republic
22. Department of Biological Sciences University of Toronto 1265 Military Trail Toronto Ontario M1C 1A4 Canada
23. Department of Natural Resources Science The University of Rhode Island Kingston Rhode Island 02881 U.S.A.
24. Facultad de Ciencias Forestales Universidad de Concepción Concepción Chile
25. Institute of Ecology and Biodiversity Santiago Chile
26. U.K. Centre for Ecology & Hydrology Wallingford OX10 8BB U.K.
27. Senckenberg Biodiversity and Climate Research Centre (SBiK‐F) Senckenberganlage 25 Frankfurt am Main 60325 Germany
28. Ecology, Department of Biology University of Konstanz Universitätsstrasse 10 Constance 78457 Germany
29. Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation Taizhou University Taizhou 318000 China
30. Estación Biológica de Doñana (EBD‐CSIC) Avd. Américo Vespucio 26 Isla de la Cartuja, Sevilla 41092 Spain
31. Department of Plant Biology and Ecology University of Sevilla Sevilla Spain
32. Forestry and Agricultural Biotechnology Institute (FABI) University of Pretoria Pretoria South Africa