Changes in the structure and dominance of the zooplankton community of the Kremenchuk Reservoir under the effect of climate changes

  • S. V. Kruzhylina Institute of Fisheries of the National Academy of Agrarian Sciences of Ukraine
  • I. Y. Buzevych Institute of Fisheries of the National Academy of Agrarian Sciences of Ukraine
  • N. Y. Rudyk-Leuska National University of Life and Environmental Sciences of Ukraine
  • M. I. Khyzhniak National University of Life and Environmental Sciences of Ukraine
  • A. V. Didenko Institute of Fisheries of the National Academy of Agrarian Sciences of Ukraine
Keywords: water temperature; Dnieper River; abundance; biomass; saprobity; copepods; cladocerans


Zooplankton plays an important role in aquatic food webs and changes in its abundance and diversity under changing climatic conditions can significantly affect the abundance and diversity of other aquatic organisms. The aim of the study was to assess quantitative and qualitative parameters of zooplankton development, dynamics of development of its dominant groups and the effect of water temperature. Species composition and abundance of zooplankton of the Kremenchuk Reservoir were studied in 2006, 2010–2012 and 2020 in relation to water temperature and pollution. Zooplankton species diversity fluctuated significantly over the years of the study. A total of 46 taxa were recorded in the reservoir during the study period. The number of recorded zooplankton taxa ranged 26 to 32 depending on the year. The most abundant zooplankters were Chydorus sphaericus, Copepoda nauplii, Brachionus diversicornis. The abundance of zooplankters in the reservoir during the study period ranged 23·103 to 256·103 ind./m3, and biomass 0.14 to 0.89 g/m3. A significant positive relationship was observed between the abundance of cladocerans, including some individual species (Ch. sphaericus and Ceriodaphnia sp.), and water temperature. Indicator species of water pollution in different years and in different parts of the Kremenchuk Reservoir differed significantly, which probably depended on the presence or absence (in a certain period of time) of polluting discharges. The total saprobity index in different years in different parts of the reservoir was in the range of 1.5–1.9. Structural indicators of zooplankton and its dominant complexes characterize the water in the Kremenchuk Reservoir as β-mesosaprobic. It is probably too early to assess the impact of climate change zooplankton as these changes are still unstable and short in time, but it is necessary to constantly monitor the biota of aquatic ecosystems to further study and summarize the data, which could later allow an identification of such changes.


Agasild, H., Zingel, P., Tõnno, I., Haberman, J., & Nõges, T. (2007). Contribution of different zooplankton groups in grazing on phytoplankton in shallow eutrophic Lake Võrtsjärv (Estonia). Hydrobiologia, 584, 167–177.

Bukovsky, M. E., & Kolomeytseva, N. N. (2013). Saprobnost’ rek na uchastkah s razlichoj antropogennoj nagruzkoj v gody raznoj vodnosti [River saprobity on sites with various anthropogenic pressures in years with various water availabilities]. Povolzhskiy Journal of Ecology, 4, 368–373 (in Russian).

Carter, J. L., & Schindler, D. E. (2012). Responses of zooplankton populations to four decades of climate warming in lakes of Southwestern Alaska. Ecosystems, 15, 1010–1026.

Carvalho, L., Miller, C., Spears, B. M., Gunn, I. D. M., Bennion, H., Kirika, A., & May, L. (2012). Water quality of Loch Leven: Responses to enrichment, restoration and climate change. Hydrobiologia, 681, 35–47.

Cremona, F., Agasild, H., Haberman, J., Zingel, P., Nõges, P., Nõges, T., & Laas, A. (2020). How warming and other stressors affect zooplankton abundance, biomass and community composition in shallow eutrophic lakes. Climatic Change, 159, 565–580.

de Eyto, E., & Irvine, K. (2001). The response of three chydorid species to temperature, pH and food. Hydrobiologia, 459, 165–172.

Fetter, G. V., & Yermolaeva, N. I. (2018). Vliyanie abioticheskih faktorov na strukturu zooplanktona malyh ozer yuga Zapadnoj Sibiri [The influence of abiotic factors on zooplankton structure in small lakes in the south of West Siberia]. Bulletin of the Altay Branch of the Russian Geographical Society, 49(2), 95–103 (in Russian).

Fomina, Y. Y., & Syarki, M. T. (2018). Sovremennoe sostoyanie zooplanktona Petrozavodskoj guby Onezhskogo ozera i ego otklik na izmenenie klimata [Modern state of zooplankton and its response to climate change in Petrozavodsk bay of the Lake Onega]. Transactions of the Karelian research centre of the Russian Academy of Sciences, 9, 54–64 (in Russian).

Frolova, L. A., Nazarova, L. B., Pestryakova, L. A., & Herzschuh, U. (2013). Analysis of the effects of climate-dependent factors on the formation of zooplankton communities that inhabit arctic lakes in the Anabar River Basin. Contemporary Problems of Ecology, 6, 1–11.

George, D. G. (1973). Diapause in Cyclops vicinus. Oikos, 24, 136–142.

Golubkov, S. M. (2013). Rol’ konsumentov v dinamike pishchevyh tsepej i funktsionirovanii vodnyh ekosistem [Role of consumers in the dynamics of food webs and functioning of water ecosystems]. Journal of Siberian Federal University, Biology, 4(6), 335–353 (in Russian).

Golubkov, S. M., Shadrin, N. V., Golubkov, M. S., Balushkina, E. V., & Litvinchuk, L. F. (2018). Food chains and their dynamics in ecosystems of shallow lakes with different water salinities. Russian Journal of Ecology, 5, 391–398.

Gubachek, Z. (ed.). (1977). Unifitsirovannye metody issledovaniya kachetsva vod. Metody biologicheskogo analiza vod. Prilozhenie 2. Atlas saprobnyh organizmov [Unified methods of the study of water quality. Methods of biological analysis of water. Annex 2. Atlas of saprobic organisms]. Sovet Ekonomicheskoj Vzaimopomoshchi, Moscow (in Russian).

Jeppesen, E., Jensen, J. P., & Søndergaard, M. (2002). Response of phytoplankton, zooplankton, and fish to reoligotrophication: an 11 year study of 23 Danish lakes. Aquatic Ecosystem Health and Management, 5, 31–43.

Jeziorski, A., Keller, B., Dyer, R., Paterson, A, & Smol, J. (2016). Differences among modern-day and historical cladoceran communities from the “Ring of Fire” lake region of northern Ontario: Identifying responses to climate warming. Fundamental and Applied Limnology, 186/3, 203–216.

Korneva, L. G., Lazareva, V. I., Mineeva, N. M., Sigareva, L. E., Sokolova, E. A., Timofeeva, N. A., Mitropol’skya, I. V., & Solovyeva, V. V. (2019). The state and dynamics of biological communities in the Rybinsk Reservoir under climate changes. Journal of Siberian Federal University, Biology, 12(2), 160–179.

Kruzhylina, S. V. (2005). Stan ta dynamika kormovoji bazy ryb-zooplanktonofagiv Kremenchyts’kogo vodoskhovyshcha [State and dynamics of food supply of zooplanktivorous fishes of the Kremenchuk Reservoir]. In: Kachnoi, A. S. (Ed.). Problemy vosproizvodstva aborigennyh vidov ryb [Problems of the propagation of aboriginal fish species]. Svit Rybalki, Kyiv. Pp. 101–105 (in Ukrainian).

Kruzhylina, S. V. (2009). Zhyvlennya ta trofichni vzaiemovidnosyny molodi osnovnyh promyslovyh vydiv ryb Kremenchuts’kogo vodoskhovyshcha [Feeding and trophic relationships of juveniles of major commercial fish species of the Kremenchuk Reservoir]. Hydrobiological Journal, 45(6), 25–35 (in Ukrainian).

Kruzhylina, S. V. (2015). Riven’ rozvytku hidrobiontiv yak kharakterystyka umov nagulu ryb vodoskhovyshch dniprovs’kogo kaskadu [The level of hydrobiont development as a characteristic of the conditions of fish fattening in the Dnieper reservoirs]. Fisheries Science of Ukraine, 4, 15–30 (in Ukrainian).

Kruzhylina, S. V., & Didenko, O. V. (2007). Stukturno-funktsional’nye harakteristiki zooplanktona Kremenchygs’kogo vodoskhovyshcha v suchasnyi period ta iogo vzaiemozv’azok z deyakymy komponentamy fitoplanktona [Structural and functional characteristics of zooplankton of the Kremenchuk Reservoir in the current period and their relationships with some components of phytoplankton]. Fisheries Science of Ukraine, 2, 71–76 (in Ukrainian).

Lazareva, V. I., Kopylov, A. I., Sokolova, E. A., & Pryanichnikova, E. G. (2015). Veligery dreissenid (Bivalvia, Dreissenidae) v trofichrskoi seti planktona Rybinskogo vodokhranilishcha [Veliger larvae of Dreissena (Bivalvia, Dreissenidae) in the plankton foodweb of the Rybinsk Reservoir]. Povolzhskiy Journal of Ecology, 1, 42–45 (in Russian).

McCauley, E. (1984). The estimation of the abundance and biomass of zooplankton in samples. In: Downing, J. A., & Rigler, F. H. (Eds.). A manual for the assessment of secondary productivity in fresh waters. Blackwell Scientific Publishers, Boston. Pp. 228–265.

McKee, D., Atkinson, A., Collings, S., Eaton, J., Harvey, I., Heyes, T., Hatton, K., Wilson, D., & Moss, B. (2002). Macro-zooplankter responses to simulated climate warming in experimental freshwater microcosms. Freshwater Biology, 47, 1557–1570.

Mordukhai-Boltovskoi, F. D. (1954). Materialy po srednemu vesy vodnyh bespozvonochnyh basseina Dona [Materials on the average weight of aquatic invertebrates of the Don River basin]. In: Problems of Hydrobiology of Inland Waters. Zoological Institute of the Academy of Sciences of USSR, Leningrad. Pp. 223–241 (in Russian).

Pashkova, O. V. (2003). Etapy i osobennosti mnogoletney suktsessii zooplanktona pelagiali Kanevskogo vodohranilishcha [Stages and features of multiannual succession of pelagic zooplankton in the Kanev Reservoir]. Hydrobiological Journal, 39(6), 42–56 (in Russian).

Pashkova, O. V. (2010). Litoral’nyi zooplankton u Dniprovs’kyh vodoskhovyshchah [Littoral zooplankton in Dnieper reservoirs of different types]. Scientific Issues of Ternopil Volodymyr Hnatiuk National Pedagogical University, 43, 395–398 (in Ukrainian).

Pashkova, O. V. (2014). Mechanisms and peculiarities of the functioning of pelagic zooplankton of the Dnieper reservoirs (on the example of the upper section of the Kanev Reservoir). Hydrobiological Journal, 50(1), 30–47.

Rogozin, A. G., Snit’ko, L. V., & Timoshkin, O. A. (2015). Thermoindicator properties of zooplankton species and their measurements. Water Resources, 42(1), 91–97.

Romanenko, V. D., Yakushin, V. M., Shcherbak, V. I., TImchenko, V. M., Pligin, Y. V., Pashkova, O. V., Tsaplina, K. M., Semeniuk, N. Y., Maistrova, N. V., Golovko, T. V., Zadorozhna, G. M., Vandiuk, N. S., Linchuk, M. I., Kalinichenko, K. P., Matchinskaya, S. F., & Zhelezniak, N. I. (2019). Bioriznomanittia ta bioresursnyi potentsial ekosistem dniprovs’kyh vodoskhovyshch v umovah klimatychnyh zmin i rozvytku biologichnoi invazii [Biodiversity and bioresource potential of ecosystems of the Dnieper reservoirs in conditions of climatic changes and development of biological invasions]. Naukova Dumka, Kyiv (in Ukrainian).

Shcherbak, V. I., & Yemel’yanov, L. V. (2002). Bioraznoobraziye i strukturno-funktional’naya organizatsiya nekotoryh komponentov bioty Zaporozhskogo i Kahovskogo vodohranilishch v usloviyah antropogennogo pressa [Biodiversity and structural-functional organization of some components of biota of Zaporozhske and Kakhovske reservoirs in conditions of anthropogenic stress]. Hydrobiological Journal, 38(5), 17–25 (in Russian).

Shcherbak, V. I., Andreev, A. D., & Hoshovskaya, G. A. (1991). Otsenka vliyania uvelicheniya srabotki urovnei dneprovskih vodohranilishch na ih bioproduktivnost’ i kachestvo vody [Assessment of the impact of an increase in the drawdown of the levels of the Dnieper reservoirs on their bioproductivity and water quality]. Gidrotekhnicheskoe Stroitel’stvo, 2, 51–53 (in Russian).

Sládeček, V. (1985). Scale of saprobity. SIL Proceedings, 22(4), 2337–2341.

Sokolov, L. V. (2010). Klimat v zhizni rasteniy i zhivotnyh [Climate in the life of plants and animals]. Tessa, Saint Petersburg (in Russian).

Trokhymets, V. N. (2014). Littoral zooplankton of the downstream area of Kaniv Reservoir. Inland Water Biology, 7, 154–160.

Vadadi-Fulop, C., Sipkay, С., Meszaros, G., & Hufnagel, L. (2012). Climate change and freshwater zooplankton: What does it boil down to? Aquatic Ecology, 46, 501–519.

Verbitsky, V. B., Kurbatova, S. A., & Verbitskaya, T. I. (2017). Reaktsii zooplanktona na temperaturnyie vozdeiztviya. I. Dinamika chislennosti populyatsiy Cladocera pri neperiodicheskih izmenenieah temperatury [Reactions of zooplankton on temperature effects. I. Influence of the nonperiodic temperature changes on the population dynamics of Cladocera]. Transactions of Papanin Institute for Biology of Inland Waters Russian Academy of Sciences, 78, 14–36 (in Russian).

Vijverberg, J., & Boersma, M. (1997). Long-term dynamics of small-bodied and large-bodied cladocerans during the eutrophication of a shallow reservoir, with special attention for Chydorus sphaericus. Hydrobiologia, 360, 233–242.

Vyshnevsky, V. I. (2011). Rika Dnipro [Dnieper River]. Interpress LTD, Kyiv (in Ukrainian).

Watkins, J., Rudstam, L., & Holeck, K. (2011). Length-weight regressions for zooplankton biomass calculations – A review and a suggestion for standard equations. Cornell Biological Field Station Publications and Reports, Bridgeport.

Yermolaeva, N. I. (2008). Vodnye ekosistemy. Osobennosti formirovaniya zooplankotna vodohranilishch: analiticheskiy obzor [Water ecosystems. Peculiarities of zooplankton formation in reservoirs: analytical review]. GPNVB SO RAN, Novosibirsk (in Russian).

Yermolaeva, N. I., Zarubina, E. Y., & Dvurechenskaya, S. Y. (2016). Sutochnaya dinamika gidrohimicheskih pokazatelei i zooplanktona v litorali Novosibirskogo vodohranilishcha [Diel dynamics of hydrochemical characteristics and zooplankton in the littoral of the Novosibirsk reservoir]. Povolzhskiy Journal of Ecology, 2, 155–166 (in Russian).

Zimbalevskaya, L. N. (1989). Litoral’nyi zooplankton [Littoral zooplankton]. In: Shcherbak, G. I. (Ed.). Invertebrates and fishes of the Dnieper and its reservoir. Naukova Dumka, Kiev. Pp. 5–21 (in Russian).

Zimbalevskaya, L. N., Pligin, Y. V., & Khoroshikh, L. A. (1987). Struktura i suktsesii litoral’nyh biotsenozov [Structure and successions of littoral biocenoses of the Dnieper reservoirs]. Naukova Dumka, Kiev (in Russian).