1. Council for Agricultural Research and Economics (CREA), Research Centre for Forestry and Wood, Rome, Italy
2. Department for Innovation in Biological, Agro-food and Forest Systems (DIBAF), University of Tuscia, Viterbo, Italy
3. Abruzzo, Lazio, and Molise National Park (PNALM), Ufficio Conservazioni e Attività Agrosilvopastorali, Pescasseroli, Italy