Abstract
The spatial structure of populations under the conditions of anthropogenic impact is a very important indicator that reflects the behavioral patterns of the species, such as changes in the structure and aggregation of individuals. Quarantine weeds are the object of ecologists close attention, as these weeds carry the greatest danger to the population, since they most often cause pollinosis and a significant deterioration in the quality of life during seasonal outbreaks of the disease. That is why they should be investigated by methods of analyzing the spatial structure of their populations. Railways are considered to be corridors along which quarantine weeds and other alien and invasive species are able to spread to new territories. Spatial behavior of species, formation of aggregations and large clusters, or a uniform distribution of individuals can reveal a fundamental relationship between the conditions of anthropogenic impact along the right-of-way and the spatial structure of populations. Along the Kinel-Bezenchuk Kuybyshev railroad in the spatial structure of the population of Cyclachaena xanthiifolia (Nutt.) Fresen. there is a group and uniform distribution of individuals. Aggregation of individuals in clusters (group distribution) are found in the places with the highest anthropogenic load.
Highlights
The patterns in grassland vegetation of Southern Ural for Bredinskiy state natural wildlife preserve example have been characterized by a hierarchical continuum concept theory
The multispecies patterns identification has been done by blocks and principal components methods and hierarchical patterns evaluation – by multivariate statistics (Cluster, Discriminant Analysis and Non-Metric Multidimensional Scaling) and biotopes phytoindication
Hierarchical continuum in steppe grassland vegetation of Southern Ural has been confirmed by multivariate statistics
Summary
Nazarenko Nazar Nikolayevich, doctor of biological sciences, professor of Chemistry, Ecology and Chemistry Methodology Department Perlov Yevgeny Dmitrievich, student of Natural Sciences and Technologies Faculty South Ural State Humanitarian Pedagogical University (Chelyabinsk, Russian Federation)
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