Types of life strategy of the coenopopulation of polycarpic herbs on the elementary landscapes of the Warmian upland
https://doi.org/10.46845/1997-3071-2023-70-24-33
Abstract
The article deals with issues related to the problems of eroded soils and the subsequent processes of development of serial communities on the way to the formation of a stable climax phytocenosis. A series is considered as a set of species that briefly exist in a given territory and replace each other. The development of soil erosion is due to anthropogenic and natural factors, so the process is of a mixed type - naturalanthropogenic. Soil erosion on slopes of any exposure of elementary landscapes affects the ecological conditions for the formation of phytocenotypes and the species composition of plant communities due to secondary successions. Plant communities of herbaceous phytocenoses of eroded soils are characterized by both sequential and sudden changes in species composition with the appearance of species adapted to a decrease in soil fertility. To pass through the stages of secondary successions, there is a sufficient supply of seeds that contribute to their distribution, germination and rooting, first as single individuals, then forming agglomerations, populations that, in the end, fit into the structure of the plant community, ensuring its spatial and temporal uniformity, observing the rules of sequential filling of the medium. The direction, speed and number of succession changes depend on the intensity of the development of erosion processes. Highly eroded soils create a significant increase in the heterogeneity of the soil environment - these are optimal conditions for the introduction of species that are not always typical for the considered phytocenoses, therefore the number of assectators increases on soils of this type. Taking weakly eroded soils as control, the number of assectators on highly eroded soils increases two to three times, while the situation is considered with possible fluctuation changes aimed at reducing assectators, which is associated with ecotopic and phytocenobiotic selections.
About the Authors
O. M. Bedareva
Kaliningrad State Technical University
Russian Federation
Russian Federation
Ol’ga M. Bedareva - Doctor of Biological Science, Professor, Head of Departament of Agronomy and Agroecology
Kaliningrad
A. I. Yusov
Kaliningrad State Technical University
Russian Federation
Russian Federation
Alexsandr I. Yusov - PhD in Biology, Associate Professor
Kaliningrad
T. N. Troyan
Kaliningrad State Technical University
Russian Federation
Russian Federation
Tatyana N. Troyan - PhD in Biology, Associate Professor
Kaliningrad
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Review
For citations:
Bedareva O.M., Yusov A.I., Troyan T.N. Types of life strategy of the coenopopulation of polycarpic herbs on the elementary landscapes of the Warmian upland. KSTU News. 2023;(70):24-33. (In Russ.) https://doi.org/10.46845/1997-3071-2023-70-24-33
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