Environmental mapping in assessing the impact of environmental factors on the aquatic ecosystem of the Arys River basin, South Kazakhstan

Elena G. Krupa, Sophia S. Barinova, Sophia M. Romanova

Research output: Contribution to journalArticlepeer-review


Assessment of the water quality of the Arys River basin based on the spatial distribution of richness of phytoperiphyton communities and abiotic variables was given for the first time. Altogether, 82 species were revealed in phytoperiphyton, including Bacillariophyta of 51, Cyanobacteria of 20, Chlorophyta of 7, and Charophyta of 4. Cluster analysis revealed the uniqueness of the composition of periphyton communities related to the abiotic conditions. The environmental preferences of the algae indicated fresh organic pollution in the lower reaches of the Arys River and weak or moderate levels of organic pollution in the rest of the basin. The ecological mapping of chemical data generally confirmed this conclusion. According to the maps, the highest water quality was revealed in the upper stream of the basin. The middle part of the river basin had the lowest water quality in terms of transparency, nitrite-nitrogen, and nitrate-nitrogen. The downstream of the Arys was characterized by a secondary deterioration in water quality according to the Aquatic Ecosystem State Index (WESI) index. We revealed the complicated interaction between natural and anthropogenic factors that caused changes in water quality in the Arys River basin.

Original languageEnglish
Article number239
Pages (from-to)1-16
Number of pages16
Issue number12
StatePublished - 2019

Bibliographical note

Funding Information:
Acknowledgments: This work was partly supported by the Israeli Ministry of Aliya and Integration.

Publisher Copyright:
© 2019 by the authors.


  • Bioindication
  • Ecological mapping
  • Phytoperiphyton
  • River
  • Water quality

ASJC Scopus subject areas

  • Ecology
  • Ecological Modeling
  • Agricultural and Biological Sciences (miscellaneous)
  • Nature and Landscape Conservation


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