Kalinkina N., Tekanova E. Assessment of long-term changes in the amount of phytoplankton in the Petrozavodskaya Bay of Lake Onego // Principy èkologii. 2025. № 3. P. 3‒2. DOI: 10.15393/j1.art.2025.16182


Issue № 3

Original research

pdf-version

Assessment of long-term changes in the amount of phytoplankton in the Petrozavodskaya Bay of Lake Onego

Kalinkina
   Natalia Mikhailovna
DSc, Federal Research Center Karelian Scientific Center of the Russian Academy of Sciences, 50 Аleksander Nevsky ave., Petrozavod Republic of Karelia 185030 Russia, cerioda@mail.ru
Tekanova
   Elena Valentinovna
Ph.D., Federal Research Center Karelian Scientific Center of the Russian Academy of Sciences, 50 Аleksander Nevsky ave., Petrozavod Republic of Karelia 185030 Russia, etekanova@mail.ru
Keywords:
Lake Onego
phytoplankton
chlorophyll a
brownification
anthropogenic load
Summary: The ecosystem of the Petrozavodsk Bay of Lake Onega is currently under the influence of changing environmental factors. The load on the bay from wastewater of the Petrozavodsk industrial center has significantly decreased. At the same time, brownification occurs in the bay due to climate warming and an increase in river runoff containing humic organic substances and phosphorus. To assess the complex effect of these factors on the ecosystem of the Petrozavodskaya Bay, we studied long-term changes in phytoplankton and chlorophyll a, which determine the bioproductivity of natural waters. During the period 1992- 2018, we performed a statistical analysis of changes in the biomass of two groups of phytoplankton – diatom and non-diatom (green, chrysophyta, pyrrhophyta, euglenaphyta, xanthophyta, cyanobacteria) and chlorophyll a concentration. The analysis was carried out separately for spring and summer phytoplankton. Spearman's correlation coefficient revealed no significant changes in the biomass of diatom and non-diatom phytoplankton, as well as chlorophyll а in spring. The proportion of diatoms in the community was fairly stable throughout the study period (coefficient of variation of 60‒100 %). The variability of the proportion of non-diatoms in the community increased from 1‒10 % to 1‒44 %. During the summer period, there was a noticeable but insignificant tendency towards a decrease in the biomass of diatom plankton and an increase in the biomass of non-diatom algae. At the same time, a significant decrease in the concentration of chlorophyll a in water was detected in summer. This may be due to a decrease in the development of the summer diatom complex, which accounts for up to 80 % of the community biomass. The higher informative content of chlorophyll a values is determined by their lower variability (coefficient of variation 38 %). We believe that at this stage of the functioning of the ecosystem of the bay, the decrease in the amount of phytoplankton is mainly due to a decrease in anthropogenic pressure.

© Petrozavodsk State University

Reviewer: A. Sharov
Received on: 12 May 2025
Published on: 25 September 2025

References

Bergström A, K., Karlsson J. Light and nutrient control phytoplankton biomass responses to global change in northern lakes, Global Change Biology. 2019. Vol. 25, No 6. P. 2021‒2029. DOI: 10.1111/gcb.14623

Chehin L. P. Light regime of reservoirs, Red. V. N. Adamenko. Petrozavodsk: Karel'skiy filial AN SSSR, 1987. 130 p.

Chekryzheva T. A. Resource potential of the food base of Lake Onego: phytoplankton of Lake Onego: Svidetel'stvo o gosudarstvennoy registracii bazy dannyh RU 2018621090, 16.07.2018. Pravoobladatel': Federal'noe gosudarstvennoe byudzhetnoe uchrezhdenie nauki Federal'nyy issledovatel'skiy centr «Karel'skiy nauchnyy centr Rossiyskoy akademii nauk», 2018.

Creed I. F., Bergström A, K., Trick C. G., Grimm N. B., Hessen D. O., Karlsson J., Kidd K. A., Kritzberg E., McKnight D. M., Freeman E. C., Senar O. E., Andersson A., Ask J., Berggren M., Cherif M., Giesler R., Hotchkiss E. R., Kortelainen P., Palta M. M., Vrede T., Weyhenmeyer G. A. Global change-driven effects on dissolved organic matter composition: Implications for food webs of northern lakes, Global Change Biology. 2018. Vol. 24, No 8. P. 3692–3714. DOI: 10.1111/gcb.14129

Diagnosis and forecast of thermohydrodynamics and ecosystems of the Great Lakes of Russia, Pod red. N. N. Filatova. Petrozavodsk: KarNC RAN, 2020. 255 p.

Galakhina N., Zobkov M., Zobkova M. Current chemistry of Lake Onego and its spatial and temporal changes for the last three decades with special reference to nutrient concentrations, Environmental Nanotechnology, Monitoring and Management. 2022. Vol. 17, 100619. P. 1–14. DOI: 10.1016/j.enmm.2021.100619

Gol'd V. M. Gaevskiy N. A. Grigor'ev Yu. S. Popel'nickiy V. A. Gehman A. V. Theoretical foundations and methods for studying chlorophyll fluorescence: Uchebnoe posobie. Krasnoyarsk: KGU, 1984. 84 p.

Holland P. R., Kay A., Botte V. A. Numerical study of the dynamics of the riverine thermal bar in a deep lake, Environmental Fluid Mechanics. 2001. No 1. P. 311–332. DOI: 10.1023/A:1013106526253

Izmest'eva L. R., Moore M. V., Hampton S. E., Ferwerda C. J., Derek K., Gray D. K., Woo K. H., Pislegina H. V., Krashchuk L. S., Shimaraeva S. V., Silow E. A. Lake – wide physical and biological trends associated with warming in Lake Baikal, Journal of Great Lakes Research. 2016. Vol. 42, No 1. P. 6–17. DOI: 10.1016/j.jglr.2015.11.006

Kalinkina N. M. Filatov N. N. Tekanova E. V. Balaganskiy A. F. Long-term dynamics of iron and phosphorus runoff into Onego Lake with Shuya river under climate change conditions, Regional'naya ekologiya. 2018. No. 2 (52). P. 7‒15. DOI: 10.30694/1026-5600-2018-2-65-73

Kalinkina N. M. Tekanova E. V. Sabylina A. V. Ryzhakov A. V. Changes in the hydrochemical regime of Onego Lake since the early 1990s, Izvestiya Rossiyskoy akademii nauk. Ser.: Geogr. 2019. No. 1. P. 62‒72. DOI: 10.31857/S2587-55662019162-72

Kalinkina N., Tekanova E., Korosov A., Zobkov M., Ryzhakov A. What is the extent of water brownification in Lake Onego, Russia?, Journal of Great Lakes Research. 2020. Vol. 46, No 4. P. 850–861. DOI: 10.1016/j.jglr.2020.02.008

Lehtovaara A., Arvola L., Keskitao J., Olin M., Rask M., Salonen K., Sarvala J., Tulonen T., Vuorenmaa J. Responses of zooplankton to long – term environmental changes in a small boreal lake, Boreal Environment Research. 2014. Vol. 19 (suppl. A). P. 97–111.

Lenard T., Ejankowski W. Natural water brownification as a shift in the phytoplankton community in a deep hard water lake, Hydrobiologia. 2017. Vol. 787. P. 153–166. DOI: 10.1007/s10750-016-2954-9

Litvinova I. A. Kalinkina N. M. Tekanova E. V. Makarova E. M. Efimova A. N. Anthropogenic load and bioindication of the state of Lake Onego (Upper Svir Reservoir): Svidetel'stvo o gosudarstvennoy registracii bazy dannyh RU 2021620975, 17.05.2021. Pravoobladatel': Federal'noe gosudarstvennoe byudzhetnoe uchrezhdenie nauki Federal'nyy issledovatel'skiy centr «Karel'skiy nauchnyy centr Rossiyskoy akademii nauk», 2021.

Petrova N. A. Gusakov B. L. Stravinskaya E. A. Features of anthropogenic eutrophication of large deep lakes, Sovremennoe sostoyanie ekosistemy Ladozhskogo ozera, Otv. red. N. A. Petrova, G. F. Raspletina. L.: Nauka, 1987. P. 6–11.

Pirozhkova G. P. Hydrochemical regime of the lake and its change under the influence of anthropogenic impact, Ekosistema Onezhskogo ozera i tendencii ee izmeneniya, Pod red. Z. P. Kaufmana. L.: Nauka, 1990. P. 95–147.

Reynolds C. S. Ecology of phytoplankton. Cambridge: Cambridge University Press, 2006. 535 p.

Sabylina A. V. Tekanova E. V. Kalinkina N. M. Chlorophyll "a" in the water of Lake Onego: Svidetel'stvo o gosudarstvennoy registracii bazy dannyh RU 2018621068, 13.07.2018. Pravoobladatel': Federal'noe gosudarstvennoe byudzhetnoe uchrezhdenie nauki Federal'nyy issledovatel'skiy centr «Karel'skiy nauchnyy centr Rossiyskoy akademii nauk», 2018.

Sabylina A. V. Chemical composition of the bays of Lake Onega, affected by anthropogenic pollution, Krupneyshie ozera-vodohranilischa Severo-Zapada evropeyskoy territorii Rossii: sovremennoe sostoyanie i izmeneniya ekosistem pri klimaticheskih i antropogennyh vozdeystviyah, Otv. red. N. N. Filatov. Petrozavodsk: KarNC RAN, 2015. P. 77‒88.

Sabylina A. V. Modern hydrochemical regime in the lake, Onezhskoe ozero. Ekologicheskie problemy, Otv. red. N. N. Filatov. Petrozavodsk: KarNC RAN, 1999. P. 58–109.

Senar O. E., Creed I. F., Strandberg U., Arts M. T. Browning reduces the availability but not the transfer of essential fatty acids in temperate lakes, Freshwater Biology. 2019. Vol. 64, No 12. P. 2107–2119. DOI: 10.1111/fwb.13399

Sherstyankin P. P., Ivanov V. G., Kuimova L. N. et al. Formation of waters of the Selenga Shallow Waters taking account of the seasonal variations in river runoff, thermal convection, and thermobars, Water Resources. 2007. Vol. 34, No 4. P. 408–414. DOI: 10.1134/S0097807807040057

Shimoda Y., Azim M. E., Perhar G., Ramin M., Kenney M. A., Sadraddini S., Gudimov A., Arhonditsis G. B. Our current understanding of lake ecosystem response to climate change: What have we really learned from the north temperate deep lakes?, Journal of Great Lakes Research. 2011. Vol. 37. P. 173–193. DOI: 10.1016/j.jglr.2010.10.004

Smirnov S. I., Zdorovennov R. E., Efremova T. V., Palshin N. I., Smirnovsky A. A., Bogdanov S. R., Terzhevik A. Yu., Zdorovennova G. E. Parameters of water column stability in a small polymictic lake in years of different weather conditions, Water Resources. 2024. Vol. 51, No 3. P. 299‒313. DOI: 10.1134/S0097807824700817

Syarki M. T. Tekanova E. V. Chekryzheva T. A. Plankton of the pelagic zone of Lake Onego: Svidetel'stvo o gosudarstvennoy registracii bazy dannyh RU 2015620274, 13.02.2015. Pravoobladatel': Federal'noe gosudarstvennoe byudzhetnoe uchrezhdenie nauki Institut vodnyh problem Severa Karel'skogo nauchnogo centra RAN, 2018.

Syarki M. T. The study of seasonal dynamics of plankton trajectories using the duble-smoothing method, Principy ekologii. 2013. No. 1. P. 62–68. DOI: 10.15393/j1.art.2013.2141

Tekanova E. V. Kalinkina N. M. Kravchenko I. Yu. Geochemical peculiarities of biota functioning in water bodies of Karelia, Izvestiya Rossiyskoy akademii nauk. Ser. geogr. 2018. No. 1. P. 90‒100. DOI: 10.7868/S2587556618010083

Vislyanskaya I. G. Structure and dynamics of phytoplankton biomass, Onezhskoe ozero. Ekologicheskie problemy, Otv. red. N. N. Filatov. Petrozavodsk: KarNC RAN, 1999. P. 146–158.

Zobkov M., Zobkova M., Galakhina N., Efremova T., Efremenko N., Kulik N. Data on the chemical composition of Lake Onego water in 2019‒2021, Data in Brief. Vol. 42, 108079. Available online. Accepted 15 March 2022. DOI: 10.1016/j.dib.2022.108079

Displays: 89; Downloads: 14;