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Information × Registration Number 0225U001178, (0124U004072) , R & D reports Title Ecology of the Kuyalnyk estuary: current state, long-term dynamics popup.stage_title Екологія Куяльницького лиману: сучасний стан, динаміка багаторічних змін Head Shykhalieieva Halyna М., Кандидат хімічних наук Registration Date 27-01-2025 Organization Odesa I.I. Mechnikov National University popup.description1 Generalization, systematization and analysis of the results of long-term (2000-2023) original research on the ecological state of aquatic and terrestrial ecosystems of the hyperhaline Kuyalnyk Estuary, assessment of the current ecological state and long-term dynamics as a results of the anthropogenic factors and climate changes. popup.description2  The results of long-term (2000-2023) original comprehensive studies of the ecosystem of the hyperhaline Kuyalnik estuary (KE) and its main watercourses were generalized, systematized and analyzed. The dynamics of inter-annual, intra-annual, perennial and seasonal changes in the salt composition, nutrients, oxygen regime indicators, toxicants of organic (petroleum products, formaldehyde, phenols) and inorganic (heavy metals) nature of the KE and its main water inflows was assessed, and the correlation between abiotic, biotic and abiotic factors was revealed. The peculiarities of hydrological and hydrochemical regimes of KE and their influence on the formation of biocenosis are investigated. Changes in water salinity under conditions of changes in the hydrological regime and their impact on the hydrobiological regime of the estuary were assessed. The regularity of the spatial distribution of the main organic (phenol, formaldehyde, petroleum products) and inorganic (heavy metals) toxicants in the KE water area in different years and seasons was determined and, using modern GIS technologies, maps of their distribution over the estuary were constructed. The regularities of distribution of a number of heavy metals (Cu, Cr, Fe, Al, Pb, Cd, V, Zn, Mn) in ecosystem components (water-bottom sediments-algae) were established. Based on the Landsat satellite image interpretation data, maps of the dynamics of changes in the water area of the estuary in the period 1976-2024 were constructed and the dynamics of intra-annual changes in the morphometric parameters of the KE in 2024 was estimated. The water quality of the estuary and its watercourses was assessed according to sanitary and hygienic standards, an integral complex indicator (hydrochemical water pollution index - HWPI), and indicators of water trophicity. The current ecological state and the dynamics of long-term changes were assessed. Product Description popup.authors Danylova Tamara S. Kiriushkina Hanna M. Shykhalieieva Halyna M. popup.nrat_date 2025-01-27 Close