Ordination plot obtained by PCA on the environmental variables collected on the selected trees for the two sub-areas for each study area: FC and PA. The MANOVA test confirmed the dissimilarities between the two study areas FC and PA, as shown by the limited overlap. Clusters correspond to different sub-areas: cluster 1 “Strada per Badia”, cluster 2 “Poggio Ghiaccione”, cluster 3 “Difesa di Pescasseroli” and cluster 4 “Val Fondillo.

 
 
  Part of: Campanaro A, Redolfi De Zan L, Hardersen S, Antonini G, Chiari S, Cini A, Mancini E, Mosconi F, Rossi de Gasperis S, Solano E, Bologna MA, Sabbatini Peverieri G (2017) Guidelines for the monitoring of Rosalia alpina. In: Carpaneto GM, Audisio P, Bologna MA, Roversi PF, Mason F (Eds) Guidelines for the Monitoring of the Saproxylic Beetles protected in Europe. Nature Conservation 20: 165-203. https://doi.org/10.3897/natureconservation.20.12728