ANALYSIS OF THE ADVENTIVE FRACTION OF THE FLOODWATER OF THE DNIPR RIVER IN THE BOUNDARIES OF THE NORTHERN STEPPE

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ANALYSIS OF THE ADVENTIVE FRACTION OF THE FLOODWATER OF THE DNIPR RIVER IN THE BOUNDARIES OF THE NORTHERN STEPPE

Journal Title: Biota. Human. Technology - Year 2024, Vol 1, Issue 2

Abstract

Objective. Analysis of the adventitious fraction the vascular plant flora of the floodplain a major river in the subarid zone of Europe. Methodology. The research was carried out by methods of comparative floristics, collection, herbarization, and species identification. Special hydrobotanical methods were used to study the flora of water bodies. Species names of the studied flora are given after Mosyakin & Fedoronchuk (1999). The analysis of the adventitious fraction was carried out according to the time of introduction -archaeophytes, neophytes, the degree of naturalization -spontaneous, naturalized, and the method of introduction -xenophytes and ergasophytes. The analysis is based on the classification of Kornás (1968).Scientific novelty.For the first time, a holistic characterization of the current state and a synopsis of the adventitious fraction within the modern flora vascular plants of the Dnipro River floodplain within the Northern Steppe was carried out.It was analyzed by the time of introduction and thedegree of naturalization. Conclusions. As a result of the study, it was found that the adventitious flora the vascular plants of the Dnipro River floodplain within the Northern Steppe is characterized by a significant number of adventitious species – 175 species, compared to the adventitious fraction of the flora of the Northern Steppe Dnipro region – 357 species(Baranovski etal., 2023). This indicates a significant anthropogenic and climatic impact on the vegetation of this region.According to the time of introduction to the studied area, the allochthonous element is divided into two groups: archaeophytes – 65 species (37.2%) and neophytes – 110 species (62.8%). According to the degree of naturalization, the species are distributed as follows: naturalized archaeophytes – 53 species (30.2%), naturalized neophytes – 58 species (33.1%), spontaneous archaeophytes – 12 species (6.8%), spontaneous neophytes – 52 species (29.7%). Among the flora of the adventitious fraction, the primary habitat of most species is Mediterranean – 43 species (24.6%), Asian – 41 species (23.4%) and North American – 37 species (19.8%). The remaining specieshave the following primary habitats: European – 14 species (8%), Mediterranean-Iranian-Turanian – 12 species (6.9%), Iranian-Turanian – 11 species (6.3%), South American – 9 species (5.1%), area of unknown origin – 6 species (3.4%), and anthropogenic origin – 2 species (1.1%).Xenophytes significantly prevail in the flora by the method of introduction.

Authors and Affiliations

Lina Karmyzova

Keywords

alien species Dnipro river valley archaeophyte neophyte anthropogenic transformation vascular species fractional analysis

EP ID EP753577
DOI https://doi.org/10.58407/bht.2.24.2
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