1. Centre for Invasion Biology, Department of Botany and Zoology Stellenbosch University Stellenbosch South Africa
2. Kirstenbosch Research Centre South African National Biodiversity Institute Cape Town South Africa
3. Department of Life Sciences and Systems Biology University of Turin Torino Italy
4. Centre for Biodiversity and Environment Research, Department of Genetics, Evolution and Environment University College London London UK
5. Institute of Zoology Zoological Society of London London UK
6. Department of Agricultural Sciences University of Sassari Sassari Italy
7. National Biodiversity Future Centre (NBFC) Palermo Italy
8. Biodiversity Assessment and Knowledge Team, Science and Data Centre International Union for Conservation of Nature (IUCN) Cambridge UK
9. Slovenian Forestry Institute Ljubljana Slovenia
10. Ecologie Systématique et Evolution Université Paris‐Saclay Gif‐sur‐Yvette France
11. Instituto Pirenaico de Ecología (IPE‐CSIC) Zaragoza Spain
12. ISPRA Rome Italy
13. IUCN SSC Invasive Species Specialist Group Roma Italy
14. Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB) Berlin Germany
15. Institute of Biology Freie Universität Berlin Berlin Germany
16. Berlin‐Brandenburg Institute of Advanced Biodiversity Research (BBIB) Berlin Germany
17. Austrian Research Centre for Forests Natural Hazards and Landscape (BFW) Vienna Austria
18. Centre for Invasion Biology, Institute for Biodiversity Yunnan University Kunming China
19. Institute of Botany Czech Academy of Sciences Průhonice Czech Republic
20. Zoology Discipline, School of Environmental and Rural Science University of New England Armidale New South Wales Australia
21. Department of Ecology, Faculty of Science Charles University Prague Czech Republic
22. Department of Natural Sciences Ovidius University of Constanta Constanta Romania
23. Environment Agency Austria Vienna Austria
24. UK Centre for Ecology & Hydrology Wallingford UK
25. Department of Biology University of Florence Sesto Fiorentino Italy
26. Doñana Biological Station (EBD‐CSIC) and Department of Plant Biology and Ecology University of Sevilla Sevilla Spain
27. Department of Plant Biology and Ecology University of Sevilla Sevilla Spain
28. Department of Biology University of Fribourg Fribourg Switzerland