Library Subscription: Guest
Begell Digital Portal Begell Digital Library eBooks Journals References & Proceedings Research Collections
International Journal on Algae
SJR: 0.219 SNIP: 0.261 CiteScore™: 0.24

ISSN Print: 1521-9429
ISSN Online: 1940-4328

International Journal on Algae

DOI: 10.1615/InterJAlgae.v21.i2.50
pages 149-162

Patterns of Distribution of Algae – Indicators of Saprobity Across the Qashkadaryo River (Republic of Uzbekistan)

K. A. Alimjanova
Institute of Botany, Academy of Sciences of the Republic of Uzbekistan, 32 Durmon Uili Str., Tashkent, Republic of Uzbekistan
G. T. Soatov
F.N. Rusanov Botanical Garden, Academy of Sciences of the Republic of Uzbekistan, 23 Bogishamol Str., Tashkent, Republic of Uzbekistan


The article presents a comparative analysis of the distribution of algae - indicators of water saprobity revealed in 2009-2017 at 8 monitoring stations in the upper, middle and lower reaches of the Qashqadaryo River in Uzbekistan. In total, 73 indicator species (Bacillariophyta - 52, Cyanophyta - 10, Chlorophyta - 10, Euglenophyta - 1 species) were found over the period of observation. Downstream, the number of indicator-saprobic species of algae in all divisions decreases, their structure also changes due to the increased influence of anthropogenic factors. At monitoring stations in the lower reaches of the river, xeno- and oligosaprobic indicator species are inferior in number comparing to β- and α-mesosaprobes. The increase in the number of the latter indicates a gradual increase in the degree of organic pollution and deterioration of water quality in the river downstream. Authors proposed to develop measures for the conservation of algal flora of the Qashkadaryo River.


  1. Alimzhanova Kh.A., Regularities in the distribution of algae in the Chirchik River basin and their importance in determining the ecological and sanitary state of water bodies, Fan, Tashkent, 2007. [Rus.].

  2. Alimzhanova Kh.A. and Eshmurodova N.Sh., in: Harmonization of harmoniously developed generation and ecological balance, Samarkand State Univ. publ., Samarkand, pp. 23-25, 2010. [Rus.].

  3. Alimzhanova Kh.A. and Shaiimkulova M.A., Algoflora of the Akboura River and its importance in assessing water quality, Fan, Tashkent, 2008. [Rus.].

  4. Algae: Reference Book, Eds S.P. Wasser, Naukova Dumka Press, Kiev, 1989. [Rus.].

  5. Ergashev A.E., in: Ecological and physiological study of algae and fungi of Central Asia, Fan, Tashkent, pp. 47-50, 1978. [Rus.].

  6. Ergashev A.E., Chlorococcales, Fan, Tashkent, 1979. [Rus.].

  7. Graham N.A.J., Mcclanahan T.R., Mcneil M.A., Wilson S.K., Polunin N.V.C. et al., Climate warning marine protected areas and the ocean-scale integrity of coral reef ecosystems, PLoS ONE, Publ. Library Sci., 3(8): e3039, 2008.

  8. Komarek J., Kastovsky J., Mares J., and Johansen J.R., Taxonomic classification of cyanoprokaryotes (cyanobacterial genera) 2014, using a polyphasic approach, Preslia, 86: 295-335, 2014.

  9. Mattox K.R. and Stewart K.D., in: Systematics of the Green Algae, Acad. Press, London, pp. 41, 42, 57, 58. 1984.

  10. Moshkova N.O., Identification manual of freshwater algae of the Ukrainian SSR, Issue 6, Nauk. Dumka Press, Kiev, 1979. [Rus.].

  11. Muzafarov A.M. Ergashev A.E., and Khalilov S., Identification manual of blue-green algae in Central Asia, Fan, Tashkent, 1987. [Rus.].

  12. Palamar-Mordvintseva G.M., Identification manual of freshwater algae of the USSR, Issue 11(2), Science, Leningrad, 1982. [Rus.].

  13. Popova T.G, Identification manual of freshwater algae of the USSR, Issue 7, Sov. sci. Moscow, 1955. [Rus.].

  14. Schulz V.L., The rivers of Central Asia, Hydromet, Leningrad, 1965.

  15. Tashpulatov Y.Sh., Algoflora of the middle course of the Zarafshan River and its role in assessing the ecological and sanitary state of water, Cand. Sci. Diss. Abstract, Tashkent, 2018. [Rus.].

  16. Tsarenko P.M., Nomenclature and taxonomic changes in the system of "green" algae, Algologia, 15(4): 459-467, 2005.

  17. Unified methods for the study of water quality, Pt III, SEV, Moscow, 1977. [Rus.].

  18. Yuldasheva M. and Olimjonova X., Distribution of indicator-saprobic algae along the Shahimardonsu-Margilan River, Rep. AN Rep. Uzbek., (3): 72-76, 2013. [Uzb.].

  19. Zabelina M.M., Kiselev I.A., Proshkina-Lavrenko A.I., and Sheshukova V.S., Identification manual of freshwater algae of the USSR, Owls. Sov. Sci., Moscow, 1951. [Rus.].

  20. Zhoze A.P., Kiselev I.A., Poretsky V.S., Proshkina-Lavrenko A.I., and Sheshchukova V.S., Diatom analysis, Gosgeolizdat, Leningrad, 1949. [Rus.].