Home – Home – Jornals – Contemporary Problems of Ecology 2025 number 4

For the first time, a comparative analysis of soil, microbiological and botanical characteristics of biocenoses - habitats of rare endangered species of the Orchidaceae Juss. of the white-flowered Cypripedium guttatum Sw. f. albiflorum Aver. and the usual forms Cypripedium guttatum Sw. It was established that soil conditions are decisive in the distribution of cenopopulations of Cypripedium guttatum of the Orchidaceae Juss. within individual biocenoses in the cryoarid climate of Central Yakutia. Important factors influencing the development of this group of orchids are the granulometric composition of the soil, the content of humus in the upper layer, hydrothermal conditions, salinity and pH values. The differences between phytocenoses according to morphological features were the ecological conditions of existence of C. guttatum cenopopulations. The Cypripedium guttatum Sw. f. albiflorum growing on humus-carbonate soil of biocenosis-1 had larger leaf and bracts parameters than Cypripedium guttatum Sw. of the usual form on pale gray soil of biocenosis-2. The humus-carbonate soil of section 1ZH-21 of biocenosis-1 turned out to be the most optimal for the existence of soil microorganisms. In the microbial communities of forest cryogenic soils, soil microscopic fungi (micromycetes) prevailed, therefore, it can be assumed that they play an important role in the development of rare plant species of the Orchidaceae Juss.