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Article

Factors Affecting Water Quality and the Structure of Zooplankton Communities in Wastewater Reservoirs of the Right-Bank Sorbulak Canal System (South-Eastern Kazakhstan)

1
Institute of Zoology, Almaty 050060, Kazakhstan
2
Kazakh Agency of Applied Ecology, Almaty 050010, Kazakhstan
*
Author to whom correspondence should be addressed.
Academic Editor: Roohollah Noori
Water 2022, 14(11), 1784; https://doi.org/10.3390/w14111784
Received: 25 March 2022 / Revised: 28 May 2022 / Accepted: 29 May 2022 / Published: 1 June 2022
(This article belongs to the Section Water Quality and Contamination)
This work aims to assess the main factors that determined the variability of environmental and biological variables in wastewater reservoirs of the Right-Bank Sorbulak Canal system (South-Eastern Kazakhstan). We used standard methods for the collection and analysis of data, as well as the principal components analysis (PCA) to assess the relationship between environmental and biological indicators. The average depth of the surveyed reservoirs was 4.1–10.0 m, temperature—21.7–25.7 °C, pH—9.41–10.00, permanganate index—16.22–19.07 mgO/dm3, N-NO2—0.03–0.13, N-NO3—1.28–3.00, N-NH4—0.30–0.53, PO4—0.14–0.39, Si—3.69–8.26, Mn—0.03–0.07, Fe—0.34–0.38 mg/dm3. The content of Cd, Co, Pb, Zn, and Cr was low, Cu—0.012–0.036 mg/dm3. The water quality is influenced by the wastewater composition, chemical interactions, morphometric and physical-chemical conditions of the reservoir, pollution of the coastal area, and secondary water pollution. Changes in the species composition and zooplankton abundance reflected the instability of external conditions. PCA showed the priority influence of carbonates, bicarbonates, magnesium, temperature, nutrients, and heavy metals on zooplankton structure. The results obtained demonstrate the indicator significance of zooplankton, and the methodological approaches can be used to assess water bodies with the complex pollution located in other regions. View Full-Text
Keywords: influence; heavy metals; nutrients; principal component analysis; seasonal dynamic; secondary pollution; self-purification influence; heavy metals; nutrients; principal component analysis; seasonal dynamic; secondary pollution; self-purification
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MDPI and ACS Style

Krupa, E.; Aubakirova, M.; Romanova, S. Factors Affecting Water Quality and the Structure of Zooplankton Communities in Wastewater Reservoirs of the Right-Bank Sorbulak Canal System (South-Eastern Kazakhstan). Water 2022, 14, 1784. https://doi.org/10.3390/w14111784

AMA Style

Krupa E, Aubakirova M, Romanova S. Factors Affecting Water Quality and the Structure of Zooplankton Communities in Wastewater Reservoirs of the Right-Bank Sorbulak Canal System (South-Eastern Kazakhstan). Water. 2022; 14(11):1784. https://doi.org/10.3390/w14111784

Chicago/Turabian Style

Krupa, Elena, Moldir Aubakirova, and Sophia Romanova. 2022. "Factors Affecting Water Quality and the Structure of Zooplankton Communities in Wastewater Reservoirs of the Right-Bank Sorbulak Canal System (South-Eastern Kazakhstan)" Water 14, no. 11: 1784. https://doi.org/10.3390/w14111784

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