Bryophyte biodiversity in the biomonitoring of the chestnut woods on the Mount Etna (Sicily)

The bryophyte epiphytic biodiversity in some chestnut stands on mount Etna were investigated. This is a numerically poor xerophytic flora, with a clearly dominant moss component and with a rather high acrocarpous/pleurocarpous ratio. Based on the biodiversity index, the incidence of the degree of resistance of the various taxa to pollutants, the degree of reproductivity of the species, some considerations on the environmental state of health are expressed. Some different moss species were evaluated for the bioaccumulation: Scleropodium touretii and Hypnum resupinatum at Piano del Vescovo, Bryum capillare and Brachythecium velutinum at Fossa La Nave Hypnum cupressiforme and Homalothecium sericeum at Balilla.