Bryoflora of the Romaniv landscape region and adjacent territories (Lviv region)

Abstract

Research was conducted on bryophytes of the Romaniv landscape reserve and adjacent territories, which belong to the North-Podilskyi-Dniester key territory of the regional eco-network of the Lviv region. 73 species of bryophytes from the divisions Marchantiophyta (7 species from the class Jungermanniopsida, 4 species – Marchantiopsida) and Bryophyta (2 species from the class Polytrichopsida, 60 species – Bryopsida) were found in the study area. Among the families, Pottiaceae (9 species, 6.6%), Brachytheciaceae (7 species, 5.1%), Mniaceae (6 species, 4.4%), Plagiotheciaceae (6 species, 4.4%), Bryaceae (5 species, 3.7%), Orthotrichaceae (4 species, 2.9%), the rest of the families are oligo- and monospecies. Among the genera are Ptychostomum (4 species, 2.9%), Plagiothecium (4 species, 2.9%), genera Plagiomnium, Didymodon, Tortula and Orthotrichum – 3 species each (2.2%). According to the substrate affiliation, there is the largest number of epigean bryophytes. Epiphytes predominate on the bark of deciduous trees, or in the root zone of beech trees. However, epixillae develop well at various stages of decay in various types of dead wood. Rocky areas in the middle of the forest, which are located outside the reserve have the biggest species diversity of bryophytes Mosses inhabit anthropogenically disturbed biotopes, in particular, sand mining quarries and agricultural land. Based on the geographical analysis, the bryoflora of this territory can be characterized as nemoral-boreal with some arid and cosmopolitan elements. Features of the geographical distribution of bryophytes are large areas, accordingly, the share of endemics among them is insignificant. Regionally rare for the mixed forest zone are Alleniella besseri, Aloina rigida, Marchantia quadrata, Taxiphyllum wissgrillii. For nemoral – Pellia endiviifolia, Porella platyphylla, Lophocolea bidentata, Encalypta streptocarpa. Data on the species composition of bryophytes and their substrate affiliation make it possible to more widely assess the types of biodiversity. The given sozological analysis of the bryoflora points to the need for further detailed research of the bryoflora. An annotated list of bryophytes was drawn up on the basis of bryofloristic studies of the Romaniv landscape reserve and adjacent territories.