Taxonomical structure of the flora of vascular plants of the forest nature reserve «Kologrivsky les»

Abstract

The article studies the taxonomic structure of the flora of vascular plants of the Nature Reserve «Kologrivsky les», which is the basis of the ecological framework of the Kostroma region. Fragments of southern taiga spruce forests not affected by forest activity have been preserved in it. Taxonomic analysis is an important stage of flora inventory. Its purpose is to identify the level of species richness of the flora, the diversity of taxa of different ranks and their correlation, that is, the systematic structuring of the flora. Materials on the formation of the floristic list of the Nature Reserve «Kologrivsky les» were obtained during the field research of the authors for the period from 2010 to 2021. Also, when compiling the list of vascular plant species, herbarium materials, preliminary flora inventory data obtained during the design of the reserve, unloading of vascular plants from the Global Biodiversity Information System (GBIF), and literature data were used. The flora of the Nature Reserve «Kologrivsky les» includes 523 species belonging to 265 genera and 79 families. The family spectrum is headed by typical dominants of the boreal fl oras of Eurasia – the families Poaceae (9.8%), Asteraceae (8.6%), Cyperaceae (8.0%), Rosaceae (4.6%) and Ranunculaceae (4.0%). They are also the most diverse families. The leading genera are Carex (6.7%), Salix (2.9%), Juncus (1.7%), Ranunculus (1.7%), Viola (1.7%). The floras of the Kologrivsky and Manturovsky areas of the reserve, which are remote from each other, have their own specifics, determined by the peculiarities of the soil-climatic, hydrological, and forest conditions.