HYDROBIOLOGICAL STUDIES OF THE WATER BODIES OF THE SULAK AND TEREK RIVERS IN THE REPUBLIC OF DAGESTAN

Alevtina G. Ardabyeva; Lyudmila V. Nikulina; E. V. Minakova; E. G. Rubcova

doi:10.29039/2413-1733-2025-41-158-165

UDC 59

HYDROBIOLOGICAL STUDIES OF THE WATER BODIES OF THE SULAK AND TEREK RIVERS IN THE REPUBLIC OF DAGESTAN

Published in Ekosistemy · Issue 41 · Pages 158–165 · Rubric: General heading

DOI: https://doi.org/10.29039/2413-1733-2025-41-158-165

Received: 23.06.2025 Accepted: 23.06.2025 Published: 23.06.2025

Authors

Alevtina G. Ardabyeva

Lyudmila V. Nikulina

E. V. Minakova

E. G. Rubcova

Alevtina G. Ardabyeva

Volga-Caspian Branch of Russian Research Institute of Fisheries and Oceanography Candidate of Economic Sciences, Assistant Professor; Assistant Professor of the Department of Finance, Credit and Economic Security · Russian Federation

Lyudmila V. Nikulina

Volga-Caspian Branch of Russian Federal “Research Institute of Fisheries and Oceanography” Chief Specialist of the Hydrobiology Laboratory · Russian Federation

E. V. Minakova

Volzhsko-Kaspiyskiy filial Vserossiyskogo nauchno-issledovatel'skogo instituta rybnogo hozyaystva i okeanografii (Kaspiyskiy nauchno-issledovatel'skiy institut rybnogo hozyaystva) Russian Federation

E. G. Rubcova

Volzhsko-Kaspiyskiy filial Vserossiyskogo nauchno-issledovatel'skogo instituta rybnogo hozyaystva i okeanografii (Kaspiyskiy nauchno-issledovatel'skiy institut rybnogo hozyaystva) Russian Federation

ABSTRACT

A brief qualitative and quantitative description of the main groups of phytoplankton, zooplankton, and zoobenthos of the Sulak and Terek rivers during the winter-summer period is provided. Research indicated that the qualitative composition and abundance of phytoplankton in the Sulak River increased from winter to summer and from the upper sampling point to the river mouth. Small celled diatoms dominated in all seasons. The basis of the species diversity of zooplankton was composed of copepods and protozoans. The maximum quantitative indicators of animal plankton were recorded in winter, followed by a decrease toward summer. The benthic fauna of the Sulak River during the entire study period was represented by the following groups of invertebrates: worms, crustaceans and insects. The maximum abundance and biomass were observed in the spring, coinciding with intense development of the worm group, particularly oligochaetes. The highest values of the qualitative and quantitative composition of the phytocenosis of the Terek River were noted in the winter period of the study, the lowest values were recorded in the summer. Changes in the biomass and abundance of zooplankton occurred in a stepwise manner, with a reduction in quantitative indicators from winter to spring, followed by an increase in summer. Representatives of worms and insects were found in the zoobenthos of the Terek River throughout all seasons. Favorable conditions for the development of zoobenthos were observed at the mouth and in the middle zone of the study area. The maximum indices of the abundance and biomass of zoobenthos were recorded in the summer due to the development of representatives of the insect group.

KEYWORDS

phytoplankton, zooplankton, zoobenthos, qualitative composition, abundance, biomass.

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1. Abdurahmanova L. A. Regionovedenie (uchebnoe posobie). – Mahachkala: DGUNH, 2018. – 142 s.

2. Ardab'eva A. G., Zimina T. N. Vidovoe raznoobrazie fitoplanktona rek Severnogo Kavkaza // Materialy XXIV mezhdunar. nauchnoy konferencii, posvyaschennoy 30-letiyu Respubliki Ingushetiya

3. Atlas bespozvonochnyh Kaspiyskogo morya / [Red. Birshteyna Ya. A., Vinogradovoy L. G.]. – M.: Pischevaya promyshlennost', 1968. – 430 s.

4. Boruckiy E. V., Stepanova L. A., Kos M. S. Opredelitel' Calanoida presnyh vod SSSR. – SPb: Nauka, 1991. – 503 s.

5. Vodnye resursy Dagestana: sostoyanie i problemy / [Red. I. M. Saypulaev, E. M. El'darov]. – Mahachkala, 1996. – 180 s.

6. Zabelina M. M. Opredelitel' presnyh vodorosley SSSR. – M., 1951. – 619 s.

7. Karnauhov G. I. Biocenoz reki Psezuapse (Chernomorskoe poberezh'e) // Mezhdunarodnyy nauchno-issledovatel'skiy zhurnal. – 2019. – № 9. – S. 129–132.

8. Karnauhov G. I. Biocenozy malyh rek Krasnodarskogo kraya // Mezhdunarodnyy nauchno-issledovatel'skiy zhurnal. – 2020. – № 10. – S. 71–79.

9. Kutikova L. A. Kolovratki fauny SSSR. – M.: Izd-vo «Nauka», 1970. – 744 s.

10. Kutikova L. A., Starobogatov Ya. I. Opredelitel' presnovodnyh bespozvonochnyh Evropeyskoy chasti SSSR. – L.: Izd-vo «Gidrometeoizdat», 1977. – 510 s.

11. Manuylova E. F. Vetvistousye rachki (Cladocera) fauny SSSR. Opredelitel' po faune SSSR. – M.: Nauka, 1964. – 328 s.

12. Opredelitel' presnovodnyh bespozvonochnyh Rossii i sopredel'nyh territoriy. Tom 1. Nizshie bespozvonochnye. Gubki, Knidarii, Turbellyarii, Kolovratki, Gastrotrihi, Nematody, Volosatiki,

13. Opredelitel' presnovodnyh bespozvonochnyh Rossii i sopredel'nyh territoriy. Tom 2. Rakoobraznye, Listonogie, Vetvistousye, Veslonogie, Ostrakody, Kumovye, Mizidy, Izopody, Dekapody,

14. Opredelitel' presnovodnyh bespozvonochnyh Rossii i sopredel'nyh territoriy. Tom 3. Paukoobraznye i nizshie nasekomye: Akaridy, Oribatidy, Galakaridy, Gidrahnidy, Pauki, Nogohvostki,

15. Opredelitel' presnovodnyh bespozvonochnyh Rossii i sopredel'nyh territoriy. Tom 4. Vysshie nasekomye. Dvukrylye nasekomye / [Red. E. P. Narchuk]. – SPb: ZIN, 1999. – 1000 s.

16. Opredelitel' presnovodnyh bespozvonochnyh Rossii i sopredel'nyh territoriy. Tom 5. Vysshie nasekomye: Rucheyniki, Babochki, Zhuki, Setchatokrylye / [Red. E. P. Narchuk]. – SPb: ZIN, 2001.

17. Opredelitel' presnovodnyh bespozvonochnyh Rossii i sopredel'nyh territoriy. Tom 6. Mollyuski, Polihety, Nemertiny): Dvustvorchatye, Bryuhonogie, Polihety, Nemertiny

18. Opredelitel' zooplanktona i zoobentosa presnyh vod Evropeyskoy Rossii. Tom 2. Zoobentos / [Red. V. R. Alekseeva, S. Ya. Calolihina]. – M.: Tovarischestvo nauchnyh izdaniy KMK, 2016. – 457 s.

19. Panov V. D., Bazelyuk A. A., Lur'e P. M. Reka Terek: gidrografiya i rezhim stoka. – Rostov-na-Donu, 2015. – 606 s.

20. Proshkina-Lavrenko A. I., Makarova I. V. Vodorosli planktona Kaspiyskogo morya. – M.: Nauka, 1968. – 291s.

21. Rukovodstvo po metodam gidrobiologicheskogo analiza poverhnostnyh vod i donnyh otlozheniy / [Red. V. A. Abakumov]. – L.: Gidrometeoizdat, 1983. – 240 s.

22. Ust'ya rek Kaspiyskogo regiona: istoriya formirovaniya, sovremennye gidrologo-morfologicheskie processy i opasnye yavleniya / [Red. V. N. Mihaylov]. – M.: GEOS, 2013. – 703 s.

23. Chirkov S. M. Sovremennoe sostoyanie ihtiofauny gornyh rek Kabardino-Balkarskoy Respubliki i perspektivy ee racional'nogo ispol'zovaniya: avtoref. dis. … kand. biol. nauk: spec. 03.00.32

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Ardabyeva A., Nikulina L., Minakova E. V., Rubcova E. G. HYDROBIOLOGICAL STUDIES OF THE WATER BODIES OF THE SULAK AND TEREK RIVERS IN THE REPUBLIC OF DAGESTAN // Ekosistemy. 2025. no. 41. pp. 158-165. DOI: https://doi.org/10.29039/2413-1733-2025-41-158-165. (Date of access 28.10.2026).

MLA

Alevtina G. Ardabyeva, Nikulina L., Minakova E. V., Rubcova E. G.. "HYDROBIOLOGICAL STUDIES OF THE WATER BODIES OF THE SULAK AND TEREK RIVERS IN THE REPUBLIC OF DAGESTAN." Ekosistemy.41 (2025): 158-165. DOI: https://doi.org/10.29039/2413-1733-2025-41-158-165.

APA

Ardabyeva A., Nikulina L., Minakova E. V., Rubcova E. G. (2025). HYDROBIOLOGICAL STUDIES OF THE WATER BODIES OF THE SULAK AND TEREK RIVERS IN THE REPUBLIC OF DAGESTAN. Ekosistemy(41), 158-165. https://doi.org/10.29039/2413-1733-2025-41-158-165

Chicago

Alevtina G. Ardabyeva, Nikulina L., Minakova E. V., Rubcova E. G.. "HYDROBIOLOGICAL STUDIES OF THE WATER BODIES OF THE SULAK AND TEREK RIVERS IN THE REPUBLIC OF DAGESTAN." Ekosistemy, no. 41 (2025): 158-165. https://doi.org/10.29039/2413-1733-2025-41-158-165.

WIKI

{{cite journal | author = Ardabyeva A., Nikulina L., Minakova E. V., Rubcova E. G. | title = HYDROBIOLOGICAL STUDIES OF THE WATER BODIES OF THE SULAK AND TEREK RIVERS IN THE REPUBLIC OF DAGESTAN | journal = Ekosistemy | year = 2025 | issue = 41 | pages = 158-165 | doi = 10.29039/2413-1733-2025-41-158-165 }}

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