1. Forest & Nature Lab Ghent University Melle‐Gontrode Belgium
2. Southern Swedish Forest Research Centre Swedish University of Agricultural Sciences Alnarp Sweden
3. Department of Physical Geography Stockholm University Stockholm Sweden
4. Plant Biodiversity Lab University of Picardy Jules Verne Amiens France
5. Vegetation Ecology and Conservation Biology Faculty of Biology/Chemistry (FB 02) University of Bremen Bremen Germany
6. Department of Botany University of Tartu Tartu Estonia
7. Leibniz Centre for Agricultural Landscape Research (ZALF) Müncheberg Germany
8. Department of Ecology Faculty of Biology and Environmental Protection University of Silesia Katowice Poland
9. School of Natural Sciences, Technology and Environmental Studies Södertörn University Stockholm Sweden