[1] Free Univ Bozen Bolzano, Fac Sci & Technol, Room 6-01,Piazza Univ 5, I-39100 Bozen Bolzano, Italy
[2] Univ Molise, Dipartimento Biosci & Terr, I-86090 Pesche, IS, Italy
[3] Univ Molise, Dipartimento Agr Ambiente & Alimenti, Via Francesco De Sanctis 1, I-86100 Campobasso, Italy
[4] EFI Project Ctr Mt Forests MOUNTFOR, Via Edmund Mach 1, I-38010 San Michele All Adige, TN, Italy