Denisova G.R., Cheremushkina V.A., Astashenkov A.Yu., Talovskaya E.B. THE STRUCTURE OF THE COENOPOPULATIONS OF DRACOCEPHALUM PEREGRINUM L. IN THE STEPPE COMMUNITIES OF SIBERIA (RUSSIA) IN DIFFERENT YEARS OF THE STUDY // Arid Ecosystems. 2025. Vol. 31. № 2 (103). P. 118-125. | PDF

In this work we study the structure of 4 coenopopulations (CP) of Dracocephalum peregrinum L. located in the steppe communities of Siberia, Russia. We discovered a variety of ontogenetic spectra: left-sided, centered, and bimodal. During the study period, pregenerative individuals accumulated in the ontogenetic spectra of all CPs. The share of the generative fraction in the CP of the Republic of Tuva had increased (CP 2, 3), while decreasing in the mountainous region of Altai (CP 1) and the Republic of Khakassia (CP 4). Structure of spectra changes for various reasons: e.g., a decrease in anthropogenic load (CP 1-4), increase in precipitation (CP 2, 3), growth of shrubs in the cenosis (CP 3), microconditions of the local area (CP 4). Demographic indicators and development speed confirmed the rejuvenation and stability of the studied CPs.

Keywords: monitoring, dynamics, Dracocephalum peregrinum, ontogenetic spectrum, demographic indicators.

DOI: 10.24412/1993-3916-2025-2-118-125

EDN: PMQWSO