Assessment of the Ecological State and Water Quality Class of Water Bodies in the Bukhara Region According to the periphyton Indicators

IJEP 42(3): 367-373 : Vol. 42 Issue. 3 (March 2022)

Nazarov Jalolitdin-Sulton Erkinovich*

1. Babasaheb Bhimrao Ambedkar Unive


Due to the increase in anthropogenic factors, such as the expansion of industrial production, urbanization, the development of virgin lands, the construction of new roads, the use of various methods of irrigation, etc., there is an inevitable deterioration in the quality of water, both for drinking and recreational purposes. At the same time, there is a need for wider use of tools for assessing various pollution of water sources. The article provides information on the ecological state of water bodies in terms of fouling or periphyton. Periphyton (fouling) – (from the Greek perijnw- to grow, overgrow) A.L. Benning, 1924)), communities of organisms living on a variety of underwater (living or dead) substrates, raised above the bottom, regardless of their origin (hydraulic structures, walls of water pipes, on concrete slopes and snags, on aquatic plants and animals [1]. The composition of fouling includes representatives of three main functional groups: autotrophic organisms – producers (algae); heterotrophic organisms – consumers (protozoa, rotifers, worms, molluscs and others) and decomposer organisms (zoogloeal, filamentous, rod-shaped, coccoid and other forms of bacteria and fungi). Periphyton, due to its confinement to the substrate, plays a primary role in assessing the quality of water and allows one to judge its average pollution for a certain period of time prior to the study. In other words, analysis of periphyton can indicate a prior deterioration in water quality that has not been detected in one-time chemical samples. Periphyton is indispensable in studies related to the assessment of the ecological state of water systems.


Periphyton, Autotrophs, Heterotrophs, Reducers, Biotic periphyton index, Saprobic index, Diatoms, Mineraliza-tion of water


  1. Bening, A.L. 1924. To the study of the bottom life of the Volga river. In Monographs of the Volga biological station (vol 1).
  2. Talskih, V.N. 2015. Ecological modifications of biocenoses of transformed aquatic ecosystems in the Central Asian region under drought conditions. Climate change, causes, consequences and adaptation measures, Uzhydromet, UNEP. Bulletin no. 9. Tashkent, Uzbekistan. pp 53-63.
  3. Halilov, S.A., et al. 2012. Ulotrix algae of Uzbe-kistan. Namangan Publishing House, Namangan State University, Uzbekistan.
  4. Ginatullina, E.N. 2020. Indicators of the ecological state of drinking and recreational water sources in Uzbekistan. Uzbek Biol. J., 1:39-44.
  5. Abakumov, V.A. 1992. Guidelines for hydrobiological monitoring of freshwater ecosystems. Gidrometeoizdat, St. Petersburg, Russia.
  6. Mustafaeva, Z.A., U.T. Mirzaev and B.G. Kamilov. 2017. Methods of hydrological monitoring of
    water bodies in Uzbekistan. Methodical manual. Navruz Publishing House, Tashkent, Uzbekistan.
  7. Talskih, V.N. 1997. Methods of hydrobiological monitoring of water bodies in the Central Asia region : Recommendations of the Republic of Uzbekistan. Glavgidromet Ruz, Tashkent.
  8. Kutikova, L.A. 1970. Rotifers ‘Rotatoria’ of the fauna of the USSR. Science Publishing House, Moscow, USSR.
  9. Kutikova, L.A. 1984. Fauna of aerotanks (atlas). Science Publishing House, Moscow, USSR.
  10. Makrushin, A.V. 1974. Bibliographic index on the topic ‘biological analysis of water quality’ with a list of organisms-indicators of pollution. Science Publishing House, Moscow, USSR.
  11. Unified water quality research methods. Methods for biological analysis of waters. Publishing Department of the Comecon Secretariat, Moscow, USSR.
  12. Halilov, S.A., et al. 2014. Keys to volvox algae in Uzbekistan. Namangan Publishing House, Namangan State University, Uzbekistan.
  13. Kursanov, L.I., et al. 1977. Keys to lower plants. Keys to lower plants. In Seaweed (vol 1 and 2). Soviet Science Publishing House, Moscow, USSR.
  14. Moshkova, N.A. and M.M. Gollerbach. 1986. Keys to freshwater algae of the USSR. In Green algae. class ulotrix (vol 10). Science Publishing House, Moscow, USSR.
  15. Muzafarov, A.M. 1965. Flora of algae in water bodies of Central Asia. Science Publishing House, Tashkent, Uzbekistan.
  16. Muzafarov, A.M., A.E. Ergashev and S. Halilov. 1988. Key to the blue-green algae of Central Asia (vol 2 and 3). Science Publishing House, Tashkent, Uzbekistan.
  17. Streble, H. and D. Krauter. 1988. Microflora and microfauna des subwassers. Das Leben in Wassertropfen, Franchkh-Kosmos Verlags GmbH, Stuttgard.
  18. Zabelina, M.M., et al. 1953. Keys to freshwater algae of the USSR. In Diatoms (vol 4). Soviet Science Publishing House, Moscow, USSR.
  19. Abakumov, V.A. 1991. Ecological modifications and development of biocenoses. In Environmental modifications and criteria for environmental regulation. Hydrometeoizadat Publishing House, Leningrad, USSR. pp 18-41.
  20. Sladecek, V. 1973. System of water quality from the biological point of view. Archiv Hydrobiologie : Ergehnisse der Limpologie. 7:218.
  21. Talskih, V.N. 1998. A biological scale for assessing the quality of water and the ecological state of water courses in Central Asia based on the ranking of the ‘biological response’ of the periphyton biocenoses. Proceedings of the Central Asian Scientific Research Hydrometerological Institute (CASRHMI), Tashkent, Uzbekistan. 155 (236):57-60.
  22. Derevenskaya, O.U. 2015. Methods for assessing water quality by hydrobiological indicators. Educational-methodical development for the course ‘hydrobiology’. Kazan (Volga region) Federal University, Kazan, Russia.
  23. Alekin, O.A. 1970. Fundamentals of hydroche-mistry. Hydrometeoizdat Publishing House, Leningrad, USSR.
  24. Mustafaeva, Z.A. and U.T. Mirzaev. 2016. Biodiversity of aquatic biocenoses of the Tudakul reservoir (Uzbekistan). Materials of the scientific-practical Conference ‘Current state and prospects for the development of aquaculture in Caspian region. Caspian Institute of Biological Resources, Dagestan State University. Proceedings, pp 105-110.
  25. Gerasimova, O.D. and Z.A. Mustafaeva. 2019. Report on the topic ‘studies on the assessment of the current ecological state of aquatic ecosystems with in the framework of the Rosalom EES (engineering and environmental surveys). Uzhydromet, Tashkent, Uzbekistan.