The records of lichen indicators of biologically valuable forest landscapes in Smolensk Smolenskoye Poozerye Park (Smolensk Region, Russia)

159 forest relevés on sample plots (400 m2 each) at Smolenskoye Poozerye National Park were collected during the period from 2017 till 2022. Lichen diversity of was analyzed simultaneously. 25 lichen species preliminary list indicators biologically valuable landscapes in coniferous-broadleaved subzone European part Russia found plots. Two more (Pyrenula nitida and Toniniopsis separabilis) added to based their compliance with criteria indicator species. All are characterized by communities high stand age without disturbance or those happened long time ago. Most occurrence «conditionally indigenous» forests unplowed areas edificatores 85 years older. The small-leaved covering old-logged bared almost same but twice less abundant. old spruce pine subjected various disturbances poorest both numbers. Three Federal Red Data Book ‒ Lobaria pulmonaria, Menegazzia terebrata Usnea florida identified several located inside core protected zone Park. Several Carbonicola anthracophila, Cladonia glauca, norvegica, terebrata, Ochrolechia androgyna, Pertusaria coccodes, coronata, leioplaca, Phlyctis agelaea, Thelotrema lepadinum, glabrescens – recommended be included into Smolensk Region.