Open AccessRare cenoflora formation patterns in the Cis-Urals steppe communities
Author(s) -
М. В. Лебедева,
S. M. Yamalov,
M V Petrova
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/817/1/012056
Subject(s) - steppe , endemism , geography , ecology , rare species , habitat , endangered species , iucn red list , distribution (mathematics) , biology , mathematical analysis , mathematics
The Urals and its adjacent areas are an important botanical and geographical boundary in the distribution of the steppe vegetation of Eurasia. In the Southern Cis-Urals, the steppes belong to ecosystems of high degree of transformation as a result of plowing, pasture and recreational use. To assess the environmental significance and rational use of preserved areas, one of the important criteria is the growth of rare and protection-needed species, relics and endemics. The aim of the study is to identify the rare component of cenoflora in the Southern Cis-Urals steppe, the confluence of its species with the main types of steppe communities and characterize the patterns of their distribution based on quantitative indicators (activity index). The studied communities include 103 rare and species in need of protection, relicts and endemics that make up 15.4% of the all coenoflora. Among them 19 species included in the Red List of the Russian Federation and also 50 species included in the regional Red Lists. We found also 16 endemic species pertaining mainly to rocky and steppe endemics. Relic flora contains 39 species with predominance of Holocene relicts (25 species) and Pleystocene relicts (11 species). The analysis of cenoflora allowed to reveal features of distribution of rare species on the different rank syntaxa communities characterizing various types of habitats. The obtained data confirm the high nature protection importance for these communities and can form a basis for the complex strategy of protection and management of these communities.