Structural Analysis of Higher Aquatic and Coastal-Aquatic Plants of Vyzhivka River
DOI:
https://doi.org/10.26565/1992-4224-2018-30-08Keywords:
river Vyzhivka, , higher aquatic plants, coastal-aquatic plants, river basin, ecological groups of plantsAbstract
Purpose. Determination of the species composition and determination of the systematic and ecological structure of the aquatic and coastal-aquatic flora of the Vyzhivka River. Methods: morphological, botanical, comparative ecology, statistical. The ecological classification of species was given according to V. Papchenkov. Results. Flora of the Vyzhivka River has 36 species of higher aquatic and coastal-aquatic plants belonging to 31 genus, 20 families, 14 orders, 3 classes (Equisetopsida, Liliopsida and Magnoliopsida) and 2 divisions (Equisetophyta and Magnoliophyta). The Magnoliophyta division includes 35 species, or 97,22% of the total number of species. The species composition is dominated by representatives of the class Liliopsida. Up to 4 families of flora (Alismataceae, Hydrocharitaceae, Cyperaceae, Lemnaceae) own 41,66% of all species. The ecological structure of aquatic and coastal-aquatic plants of Vyzhivka river includes four ecotypes. The first place in terms of the number of species is occupied by hydrophytes, which amount 33,33% of the total number of species, hygrohelophytes are represented by 30,56%. The share of helophytes and hygrophytes, respectively, is 19,44% and 16,67%. Conclusions. As a result of the conducted research, the species composition and features of the ecological structure of the higher aquatic and coastal-aquatic flora of the Vyzhivka River were established. The greatest species diversity is characteristic for the plot number 1 – 24 species. In the second section, 21 species of aquatic and coastal aquatic plants were identified. The smallest number – 18 species, is in the third area. The anthropogenic factors have the greatest impact on biodiversity: the presence of a drainage system, straightening of the riverbed, the use of the river basin for agricultural needs, the discharge of insufficiently treated sewage of housing and communal services.
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