Granulometric and Chemical Composition of Bottom Sediments in North Kazakhstan’s Water Reservoirs: Implications for Soil and Water Management
Yskak A. Chashkov V. Nugmanov A. Joldassov A. Paramonova T. Kurmangaliyeva D. Nurseitova A.
Mar-Apr, 2025Unique Scientific Publishers
International Journal of Agriculture and Biosciences
2025#14Issue 2289 - 300 pp.
Bottom sediments play a crucial role in the environmental and agricultural management of freshwater reservoirs, acting as repositories for organic matter, chemical elements, and potential pollutants. This study investigates the chemical and granulometric composition of bottom sediments in the Verkhnetobolskoe and Karatomarskoe reservoirs in North Kazakhstan, focusing on the relationships between sediment particle sizes, organic matter, and heavy metal content. Sediment and water samples were collected during winter under ice-covered conditions using specialized sampling equipment and analyzed with advanced spectrometric and analytical methods. The study reveals significant correlations between fine-grained sediment fractions (<0.16mm) and the accumulation of organic matter and heavy metals, including cobalt, arsenic, and chromium, which exceeded permissible concentration limits. These findings underscore the ecological importance of fine sediment fractions as adsorptive sites for pollutants. The study concludes with methodological recommendations for sediment quality assessment and provides baseline data for environmental monitoring and agricultural planning in temperate freshwater ecosystems.
Bottom sediments , Clay soils , Granulometric composition , Heavy element , Organic matter content
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Akhmet Baitursynuly Kostanay Regional University, Kostanay, Kazakhstan
Satbayev University, Almaty, Kazakhstan
Lomonosov Moscow State University, Moscow, Russian Federation
Saken Seifullin Kazakh Agro Technical Research University, Kazakhstan
Akhmet Baitursynuly Kostanay Regional University
Satbayev University
Lomonosov Moscow State University
Saken Seifullin Kazakh Agro Technical Research University
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