Fig. 1

Location and altitude of four study sites (PE-Pescofalcone, UG-Ugni, PG-Piana Grande, BK-Blockhaus—white dots) in the Majella National Park
Location and altitude of four study sites (PE-Pescofalcone, UG-Ugni, PG-Piana Grande, BK-Blockhaus—white dots) in the Majella National Park