[1] Univ Highlands & Isl, Inverness Coll UHI, 1 Inverness Campus, Inverness IV2 5NA, Scotland
[2] Univ Molise, Dipartimento Agr Ambiente & Alimenti, Via Francesco De Sanctis, I-86100 Campobasso, Italy
[3] Univ Molise, Ctr Ricaree Aree Interne & Appennini ArIA, Via Francesco De Sanctis, I-86100 Campobasso, Italy
[4] Bayerische Landes Anstalt Wald & Forstwirtschaft, Sachgebiet Schutzwald & Nat Gefahren, Hochanger 11, D-85354 Freising Weihenstephan, Germany
[5] INIA, Dept Forest Dynam & Management, Forest Res Ctr, Crta Coruna Km 7-5, Madrid 28040, Spain
[6] Univ Valladolid, Sustainable Forest Management Res Inst, IUFOR, Valladolid, Spain
[7] INIA, Valladolid, Spain
[8] Fdn Edmund Mach, IASMA Res & Innovat Ctr, Dept Sustainable Agroecosyst & Bioresources, San Michele All Adige, Trento, Italy
[9] EFI Project Ctr Mt Forests MOUNTFOR, San Michele A Adige, Trento, Italy
[10] Slovak Acad Sci, Inst Forest Ecol, SlovaK Globe, Vazovova 5, Bratislava 81243, Slovakia
[11] Univ Agr, Dept Forest Biodivers, Al 29 Listopada 46, PL-31425 Krakow, Poland
[12] Univ Torino, Dipartimento Sci Agr Forestali & Alimentari DISAF, Lgo Paolo Braccini 2, I-10095 Grugliasco, TO, Italy
[13] Agr Univ Krakow, Fac Forestry, Dept Forest Ecol & Silviculture, Al 29 Listopada 46, PL-31425 Krakow, Poland
[14] Libera Univ Bolzano, Fac Sci & Tecnol, Piazza Univ 1, I-39100 Bolzano, Bozen, Italy
[15] Tech Univ Munich, Sch Life Sci, Chair Forest Growth & Yield Sci, Hans Carl von Carlowitz Pl 2, D-85354 Freising Weihenstephan, Germany
[16] Swiss Fed Inst Forest Snow & Landscape Res WSL Fo, Zurcherstr 111, CH-8903 Birmensdorf, Switzerland
[17] Bulgarian Acad Sci, Inst Plant Physiol & Genet, Acad G Bonchev Str,Bl 21, Sofia 1113, Bulgaria
[18] Univ Cumbria, Natl Sch Forestry, Lake Dist Campus, Ambleside LA22 9BB, Cumbria, England