1. Department of Forest & Water Management; ForNaLab; Ghent University; Ghent Belgium
2. Department of Biology; TEREC; Ghent University; Ghent Belgium
3. School of Mathematics and Statistics and the Evolution & Ecology Research Centre; The University of New South Wales; NSW 2052 Australia
4. Research Institute for Nature and Forest (INBO); Brussels Belgium
5. Institute of Ecology; Friedrich Schiller University Jena; Jena Germany
6. Plant Biodiversity Laboratory; Université de Picardie Jules Verne; Amiens Cedex France
7. Department of Botany; Stockholm University; Stockholm Sweden
8. Department of Vegetation Ecology; Institute of Botany; Academy of Sciences of the Czech Republic; Brno Czech Republic
9. Department of Biodiversity Research/Systematic Botany; Institute of Biochemistry and Biology; University of Potsdam; Potsdam Germany
10. Division of Forest, Nature and Landscape; Department of Earth & Environmental Sciences; K.U. Leuven; Leuven Belgium
11. Alterra; Wageningen UR; Wageningen The Netherlands
12. Department of Plant Sciences; University of Oxford; Oxford UK
13. Institute of Land Use Systems; Leibniz-ZALF; Müncheberg Germany
14. Department of GIS and Remote Sensing; Institute of Botany; Academy of Sciences of the Czech Republic; Průhonice Czech Republic
15. Federal Office for the Environment FOEN, Species, Ecosystems; Landscapes Division; Bern Switzerland