1 German Centre for Integrative Biodiversity Research (iDiv) - Halle-Jena-Leipzig, Puschstrasse 4, 04103, Leipzig, Germany. francesco.sabatini@botanik.uni-halle.de.
2 Martin-Luther-Universität Halle-Wittenberg, Institut für Biologie, Am Kirchtor 1, 06108, Halle, Germany. francesco.sabatini@botanik.uni-halle.de.
3 Humboldt-Universität zu Berlin, Geography Department, Unter den Linden 6, 10099, Berlin, Germany.
11 Centre for Applied Ecology "Professor Baeta Neves" (CEABN), InBIO, School of Agriculture, University of Lisbon, Tapada da Ajuda, 1349-017, Lisbon, Portugal.
12 Parque Nacional de Garajonay. Avda. V Centenario, edif. Las Creces, local 1, portal 3, 38800 San Sebastian de La Gomera, Tenerife, Spain.
13 University of Torino, Department DISAFA L.go Paolo Braccini 2, Grugliasco, 10095, Italy.
14 Forest Research Institute, Vassilika, 57006, Thessaloniki, Greece.
15 Centre for Ecological Research, Institute of Ecology and Botany, Alkotmány u. 2-4, 2163, Vácrátót, Hungary.
16 Faculty of Forestry, University of Agriculture in Krakow, aleja 29-Listopada 46, 31-415, Krakow, Poland.
17 Latvian State Forest Research Institute "Silava", Rigas street 111, Salaspils, LV-2169, Latvia.
18 Institute for Nature Conservation of Vojvodina Province, Radnička 20a, Novi Sad, 21000, Serbia.
19 University of Tartu, Institute of Ecology and Earth Sciences, Vanemuise 46, EE-51014, Tartu, Estonia.
20 Centre for Econics and Ecosystem Management, Faculty of Forest and Environment, Eberswalde University for Sustainable Development, Alfred-Möller-Str. 1, 16225, Eberswalde, Germany.
21 Université de Toulouse, INRAE, UMR DYNAFOR, 24 Chemin de Borde-Rouge Auzeville CS 52627, Castanet-Tolosan, 31326, France.
22 CRPF-Occitanie, antenne de Tarbes, place du foirail, 65000, Tarbes, France.
23 Mediterranean University of Reggio Calabria, Agraria Department, Loc. Feo di Vito, 89122, Reggio Calabria, Italy.
24 University of Novi Sad, Institute of Lowland Forestry and Environment, Antona Cehova 13d, Novi Sad, 21102, Serbia.
25 World Wide Fund for nature (CEE), Lunga street 190, Brasov, 500051, Romania.
26 Northwest German Forest Research Institute, Department Forest Nature Conservation, Professor-Oelkers-Straße 6, 34346, Hann. Münden, Germany.
31 Vytautas Magnus University, K. Donelaičio g. 58, LT-44248, Kaunas, Lithuania.
32 University of Forestry, Dendrology Department, bulevard "Sveti Kliment Ohridski" 10, 1756, Sofia, Bulgaria.
33 Slovenia Forest Service, Department for forest management planning, Vecna pot 2, 1000, Ljubljana, Slovenia.
34 Centre for Applied Ecology "Professor Baeta Neves" (CEABN), InBIO, School of Agriculture, University of Lisbon, Tapada da Ajuda 1349-017, Lisbon, Portugal.
35 Greensway AB, Ulls väg 24A, 756 51, Uppsala, Sweden.
36 Freelance forest expert and book author, Vienna, Austria.
37 Ss. Cyril and Methodius University in Skopje, Hans Em Faculty of Forest Sciences, Landscape Architecture and Environmental Engineering, Department of Botany and Dendrology, P.O. Box 235, MK-1000, Skopje, North Macedonia.
38 Swiss Federal Research Institute for Forest, Snow and Landscape Research WSL, Forest Resources and Management, Zürcherstrasse 111, 8903, Birmensdorf, Switzerland.
39 University of Novi Sad, Institute of Lowland Forestry and Environment, Antona Cehova 13d, Novi Sad, 21000, Serbia.
40 Department of Forest Biodiversity, University of Agriculture, Kraków, Poland.
41 University of Eastern Finland, School of forest Sciences, Yliopistokatu 7, 80100, Joensuu, Finland.
42 Agricultural University of Tirana, Forestry Department, Kodër Kamëz, SH1, 1029, Tirana, Albania.
43 World Wide Fund for nature (DCP) Ukraine, Mushaka 48, Lviv, 79011, Ukraine.
45 Silva Tarouca Research Institute, Department of Forest Ecology, Lidická 25/27, 602 00, Brno, Czech Republic.
46 Institute of Experimental Botany of the National Academy of Sciences of Belarus, Laboratory of Productivity & Stability of Plant Communities, 220072, Academicheskaya St. 27, Minsk, Belarus.
47 Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, 2 Gagarin Street, 1113, Sofia, Bulgaria.
48 Saint-Petersburg State University, Department of Vegetation Science, University Embankment, 7/9, St Petersburg, 199034, Russia.
49 Humboldt-Universität zu Berlin, Geography Department & Integrative Research Institute on Transformation in Human-Environment Systems, Unter den Linden 6, 10099, Berlin, Germany.