1. Centre of Excellence of Plant and Vegetation Ecology, Univ. of Antwerp; BE-2610 Wilrijk Belgium
2. Inst. of Integrative Biology; Dept of Environmental Systems Science; ETH Zürich CH-8092 Zürich Switzerland
3. Depto de Botánico, Facultad de Ciencias Naturales y Oceanográficas; Univ. de Concepción and Inst. de Ecología y Biodiversidad (IEB); Casilla 160-C Concepción Chile
4. Inst. of Biology/Geobotany and Botanical Garden, Martin Luther Univ. Halle-Wittenberg; Halle (Saale) Germany
5. German Centre for Integrative Biodiversity Research (iDiv); Leipzig Germany
6. UR ‘Ecologie et Dynamique des Systèmes Anthropisés’ (EDYSAN, FRE 3498 CNRS-UPJV), Univ. de Picardie Jules Verne; 1 Rue des Louvels FR-80000 Amiens France
7. Dept of Ecology, Environment and Evolution; La Trobe Univ.; PO Box 821 Wodonga VIC 3689 Australia
8. USDA Forest Service, Pacific Northwest Research Station; La Grande OR 97850 USA
9. Grupo de Ecología de Invasiones, Univ. Nacional del Comahue, INIBIOMA, CONICET; Quintral 1250, C.P. 8400 Bariloche Argentina
10. Laboratorio de Invasiones Biológicas, Univ. de Concepción and Inst. of Ecology and Biodiversity (IEB); Casilla 160-C Concepción Chile
11. Dept of Land Resources and Environmental Sciences; Montana State Univ.; Bozeman MT 59717 USA
12. Climate Impacts Research Centre (CIRC), Dept of Ecology and Environmental Science; Umeå Univ.; SE-981 07 Abisko Sweden
13. Research Inst. for Nature and Forest INBO; Dept of Biodiversity and Natural Environment; BE-1070 Brussels Belgium