[1] Univ Ghent, Dept Forest & Water Management, Lab Forestry, BE-9090 Gontrode, Melle, Belgium
[2] Goethe Univ Frankfurt, Dept Ecol & Geobot, Inst Ecol Evolut & Div, D-60438 Frankfurt, Germany
[3] Swedish Univ Agr Sci, So Swedish Forest Res Ctr, SE-23053 Alnarp, Sweden
[4] Agcy Nat & Forests, BE-1000 Brussels, Belgium
[5] Univ Picardie Jules Verne, Res Unit Dynam Syst Anthropises JE 2532, Plant Biodivers Lab, FR-80037 Amiens, France
[6] Univ Gottingen, Dept Vegetat & Phytodivers Anal, Albrecht von Haller Inst Plant Sci, D-37073 Gottingen, Germany
[7] Stockholm Univ, Dept Bot, SE-10691 Stockholm, Sweden
[8] Acad Sci Czech Republ, Dept Vegetat Ecol, Inst Bot, CZ-65720 Brno, Czech Republic
[9] Univ Potsdam, Dept Biodivers Res Systemat Bot, Inst Biochem & Biol, D-14469 Potsdam, Germany
[10] Katholieke Univ Leuven, Dept Earth & Environm Sci, Div Forest Nat & Landscape, BE-3001 Louvain, Belgium
[11] Alterra, Wageningen UR, NL-6700 AA Wageningen, Netherlands
[12] Leibniz ZALF eV, Inst Land Use Syst, D-15374 Muncheberg, Germany
[13] Nat England, Peterborough PE1 1UA, Cambs, England
[14] St Briavels Common, Lydney GL15 6SL, England
[15] Acad Sci Czech Republ, Dept Geobot, Inst Bot, CZ-25243 Pruhonice, Czech Republic
[16] Tech Univ Munich, Lehrstuhl Renaturierungsokol, D-85350 Freising Weihenstephan, Germany
[17] Res Inst Nat & Forest, B-1070 Brussels, Belgium
[18] Univ Bayreuth, Dept Plant Ecol, D-95440 Bayreuth, Germany