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Abstract

The article focuses on the problem of structure degradation and ecosystem functioning – the urgency that identifies the relevance of operations at a strategic level aimed at providing the integrated assessment of ecological stability of water. Determination of water quality indicators were divided into blocks according to the criteria of salt composition, according to chemical saprobological indicators and the content of specific substances of toxic and radiation action. According to the results of block analysis, the integrated ecological index of water quality was determined by the dependence of water quali-ty on the indicators of ecological stabilization of the landscape and the structure of biotechnical elements. The article de-termines the relationships between worsening quality of surface waters and stabilization or destabilization of the landscape structure. The research was conducted on medium and large streamflows on the Right Bank of Polesie region of the Dnie-per-River cascade within which the tracts of land were identified and the landscape ecological stability (CESL1) and land-scape biotechnical elements coefficients (CESL2) were determined. The retrospective analysis was performed of the sur-face water features on the Right Bank of Polesie region of the Dnieper- River cascade and the main trends in salt block in-dicators, trophic and saprobiological block indicators, and in the content of toxic and radioactive substances at observation sites were estimated. Based on obtained data, the integrated assessment in trends of surface water quality on the Right Bank of Polesie region of the Dnieper- River cascade was made and the main parameters and scale of stabilization and destabili-zation of landscape impact on the water quality formation were defined.

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Authors and Affiliations

Tetyana P. Fedoniuk
Roman H. Fedoniuk
Ludmila D. Romanchuk
Anatolyy A. Petruk
Viktor M. Pazych
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Abstract

The results of a research into the scale and consequences of the degradation of aquatic ecosystems in Ukrainian Polesie have been detected in article, and the areas of increased anthropogenic pressure have been identified which greatly affect the condition and number of aquatic macrophytes. The biodiversity of sites with different anthropogenic load was evaluated using the biodiversity criteria. In the research, the structural and functional features of macrophytic species diversity within Teteriv River ecological corridor as a typical river landscape of Ukrainian Polesie were determined and described, the floristic composition was determined. Within the ecological zones, the number of species and their projective coverage in areas with different anthropogenic pressures within Teteriv River ecological corridor were determined. The basic criteria for the implementation of deferred biomonitoring based on the analysis of the dynamics of the spe-cies composition of the phytocoenoses of Teteriv River ecological corridor on the indicators of ecological stability and plasticity using the species-specific criteria, are: Margalef species richness index, Sørensen–Dice index, Shannon diversity index, Simpson’s index, and Pielou’s evenness index. Based on the results, correlation dependencies have been constructed, which will allow to obtain data on the stability of the development of aquatic ecosystems according to the data of species surveys. Interconnections between biodiversity indicators and indicators of surface water quality within the Ukrainian Polesie were found; they are the fundamental component of a long-term monitoring of the stability in the development of aquatic phytocenoses.

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Authors and Affiliations

Tetiana P. Fedonyuk
Roman H. Fedoniuk
Anastasiia A. Zymaroieva
Viktor M. Pazych
Ella O. Aristarkhova
ORCID: ORCID

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