Stoichiometry and planktonic communities structure in littoral and pelagic zones of two lakes with different trophic types in Belarus

Stoichiometric C : N : P ratios were compared between primary producers in littoral and pelagic ecosystems of mesotrophic relatively shallow lake Obsterno and shallow macrophyte covered low trophic lake Nobisto from May to October over the next two years. Elemental seston ratios of lake Obsterno rev...

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Published in:Doklady of the National Academy of Sciences of Belarus
Main Authors: Zh. F. Buseva, Sh. G. Farahani, V. I. Razlutskij, E. A. Sysova, N. N. Maisak, K. V. Myagkova, P. C. Frost, Ж. Ф. Бусева, Ш. Г. Фарахани, В. И. Разлуцкий, Е. A. Сысова, Н. Н. Майсак, К. В. Мягкова, П. С. Фрост
Other Authors: We would like to acknowledge Dr. V.P. Semenchenko the head of Laboratory of Hydrobiology Corresponding Member of the National Academy of Sciences of Belarus, for his valuable comments, Belarusian State University, Faculty of Biology and T.V. Zhukova Head of Naroch biological station and its staff – E.A. Zhuravliova and E.I. Lapitskaja for their technical assistance. This work was supported by BRFFR (grant no. B17-037)., Благодарим за ценные комментарии заведующего лабораторией гидробиологии члена-корреспондента НАН Беларуси В.П. Семенченко, Белорусский государственный университет, биологический факультет и Т.В. Жукову, начальника Нарочанской биологической станции и ее сотрудников – Е.А. Журавлеву и Е.И. Лапицкую за техническую помощь. Работа выполнена при поддержке БРФФИ (грант № B17-037).
Format: Article in Journal/Newspaper
Language:English
Published: The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka" 2023
Subjects:
Online Access:https://doklady.belnauka.by/jour/article/view/1099
https://doi.org/10.29235/1561-8323-2022-66-6-595-604
id ftjdnasb:oai:oai.dan.elpub.ru:article/1099
record_format openpolar
institution Open Polar
collection Doklady of the National Academy of Sciences of Belarus (E-Journal)
op_collection_id ftjdnasb
language English
topic зоопланктон
shallow lakes
pelagic zone
littoral
phytoplankton
zooplankton
мелководные озера
пелагиаль
литоральная зона
фитопланктон
spellingShingle зоопланктон
shallow lakes
pelagic zone
littoral
phytoplankton
zooplankton
мелководные озера
пелагиаль
литоральная зона
фитопланктон
Zh. F. Buseva
Sh. G. Farahani
V. I. Razlutskij
E. A. Sysova
N. N. Maisak
K. V. Myagkova
P. C. Frost
Ж. Ф. Бусева
Ш. Г. Фарахани
В. И. Разлуцкий
Е. A. Сысова
Н. Н. Майсак
К. В. Мягкова
П. С. Фрост
Stoichiometry and planktonic communities structure in littoral and pelagic zones of two lakes with different trophic types in Belarus
topic_facet зоопланктон
shallow lakes
pelagic zone
littoral
phytoplankton
zooplankton
мелководные озера
пелагиаль
литоральная зона
фитопланктон
description Stoichiometric C : N : P ratios were compared between primary producers in littoral and pelagic ecosystems of mesotrophic relatively shallow lake Obsterno and shallow macrophyte covered low trophic lake Nobisto from May to October over the next two years. Elemental seston ratios of lake Obsterno revealed smaller differences between littoral and pelagic zones in comparison with lake Nobisto in 2017. During the studied period, in the both lakes, the seston C : N and C : P ratios were higher than the Redfield ratio (106 : 16 : 1 C : N : P) on most dates and N : P was always more than 16. Pelagic C : P and N : P ratios in lake Obsterno were the highest in May in 2017, July and September in 2018 with significant differences between littoral and pelagic zones. N : P ratios decreased in October but there were no significant differences among habitats. In lake Nobisto in 2018, seston C : P and N : P ratios increased from May to July in littoral and pelagic zones but then decreased in September to October. Our research shows differences in stoichiometric ratios in littoral and pelagic zones of these two lakes, which indicates food quality (seston C : N : P ratios) differences for zooplankton species depending on season and location. Изучали стехиометрию сестона (соотношения C : N : P) двух мелководных озер разной трофности – мезотрофного озера Обстерно и дистрофного макрофитного типа озера Нобисто в течение двух последовательных лет. Сравнивали сезонные изменения в стехиометрии продуцентов в литоральной и пелагической зонах. Соотношения элементов в сестоне оз. Обстерно выявили меньшие различия между литоральной и пелагической зонами по сравнению с оз. Нобисто в 2017 г. В течение исследуемого периода в обоих озерах соотношения C : N и C : P в сестоне были выше классического соотношения Редфилда (C106 : N16 : P1), а соотношение N : P всегда превышало 16. Соотношения C : P в пелагиали оз. Обстерно имели самые высокие показатели в мае 2017 г., а N : P в июле и сентябре 2018 г. со значимыми различиями между литоральной и ...
author2 We would like to acknowledge Dr. V.P. Semenchenko the head of Laboratory of Hydrobiology Corresponding Member of the National Academy of Sciences of Belarus, for his valuable comments, Belarusian State University, Faculty of Biology and T.V. Zhukova Head of Naroch biological station and its staff – E.A. Zhuravliova and E.I. Lapitskaja for their technical assistance. This work was supported by BRFFR (grant no. B17-037).
Благодарим за ценные комментарии заведующего лабораторией гидробиологии члена-корреспондента НАН Беларуси В.П. Семенченко, Белорусский государственный университет, биологический факультет и Т.В. Жукову, начальника Нарочанской биологической станции и ее сотрудников – Е.А. Журавлеву и Е.И. Лапицкую за техническую помощь. Работа выполнена при поддержке БРФФИ (грант № B17-037).
format Article in Journal/Newspaper
author Zh. F. Buseva
Sh. G. Farahani
V. I. Razlutskij
E. A. Sysova
N. N. Maisak
K. V. Myagkova
P. C. Frost
Ж. Ф. Бусева
Ш. Г. Фарахани
В. И. Разлуцкий
Е. A. Сысова
Н. Н. Майсак
К. В. Мягкова
П. С. Фрост
author_facet Zh. F. Buseva
Sh. G. Farahani
V. I. Razlutskij
E. A. Sysova
N. N. Maisak
K. V. Myagkova
P. C. Frost
Ж. Ф. Бусева
Ш. Г. Фарахани
В. И. Разлуцкий
Е. A. Сысова
Н. Н. Майсак
К. В. Мягкова
П. С. Фрост
author_sort Zh. F. Buseva
title Stoichiometry and planktonic communities structure in littoral and pelagic zones of two lakes with different trophic types in Belarus
title_short Stoichiometry and planktonic communities structure in littoral and pelagic zones of two lakes with different trophic types in Belarus
title_full Stoichiometry and planktonic communities structure in littoral and pelagic zones of two lakes with different trophic types in Belarus
title_fullStr Stoichiometry and planktonic communities structure in littoral and pelagic zones of two lakes with different trophic types in Belarus
title_full_unstemmed Stoichiometry and planktonic communities structure in littoral and pelagic zones of two lakes with different trophic types in Belarus
title_sort stoichiometry and planktonic communities structure in littoral and pelagic zones of two lakes with different trophic types in belarus
publisher The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"
publishDate 2023
url https://doklady.belnauka.by/jour/article/view/1099
https://doi.org/10.29235/1561-8323-2022-66-6-595-604
genre Arctic
genre_facet Arctic
op_source Doklady of the National Academy of Sciences of Belarus; Том 66, № 6 (2022); 595-604
Доклады Национальной академии наук Беларуси; Том 66, № 6 (2022); 595-604
2524-2431
1561-8323
10.29235/1561-8323-2022-66-6
op_relation https://doklady.belnauka.by/jour/article/view/1099/1098
Sterner R. W., Andersen T., Elser J. J., Hessen D. O., Hood J. M., McCauley E., Urabe J. Scale-dependent carbon : nitrogen : phosphorus seston stoichiometry in marine and freshwaters. Limnology and Oceanography, 2008, vol. 53, no. 3, pp. 1169–1180. https://doi.org/10.4319/lo.2008.53.3.1169
Sterner R. W., Elser J. J. Ecological stoichiometry: the biology of elements from molecules to the biosphere. New Jersey, 2003. Vol. 10. 572 p. https://doi.org/10.1515/9781400885695
Sterner R. W. The ratio of nitrogen to phosphorus resupplied by herbivores: zooplankton and the algal competitive arena. American Naturalist, 1990, vol. 136, no. 2, pp. 209–229. https://doi.org/10.1086/285092
Frost P. C., Evans-White M. A., Finkel Z. V., Jensen T. C., Matzek V. Are you what you eat? Physiological constraints on organismal stoichiometry in an elementally imbalanced world. Oikos, 2005, vol. 109, no. 1, pp. 18–28. https://doi.org/10.1111/j.0030-1299.2005.14049.x
Antenucci J., Imberger J. The effectiveness of reservoirs as water quality barriers. Cadee K., ed. The effectiveness of reservoirs as water quality barriers. Australia, Perth, 2003. 354 p.
Kolding J., van Zwieten P. A. M. Relative lake level fluctuations and their influence on productivity and resilience in tropical lakes and reservoirs. Fisheries Research, 2012, vol. 115–116, pp. 99–109. https://doi.org/10.1016/j.fishres.2011.11.008
Dubovskaya O. P., Semenchenko V. P., Gladyshev M. I., Buseva J. F., Razlutskij V. I. Non-predatory mortality indices of cladoceran zooplankton in the pelagial and littoral of a shallow meso-eutrophic lake. Doklady Biological Sciences, 2007, vol. 416, no. 1, pp. 391–393. https://doi.org/10.1134/s0012496607050201
Elser J. J., O’Brien W. J., Dobberfuhl D. R., Dowling T. E. The evolution of ecosystem processes: growth rate and elemental stoichiometry of a key herbivore in temperate and arctic habitats. Journal of Evolutionary Biology, 2000, vol. 13, no. 5, pp. 845–853. https://doi.org/10.1046/j.1420-9101.2000.00215.x
Elser J. J., Hassett R. P. A stoichiometric analysis of the zooplankton–phytoplankton interaction in marine and freshwater ecosystems. Nature, 1994, vol. 370, no. 6486, pp. 211–213. https://doi.org/10.1038/370211a0
Tilman D., Kiesling R., Sterner R., Kilham S. S., Johnson F. Green, blue-green and diatom algae: taxonomic differences in competitive ability for phosphorus, silicon and nitrogen. Archiv für Hydrobiologie, 1986, vol. 106, pp. 473–485.
Jasser I. The influence of macrophytes on a phytoplankton community in experimental conditions. Hydrobiologia, 1995, vol. 306, no. 1, pp. 21–32. https://doi.org/10.1007/bf00007855
Frost P. C., Benstead J. P., Cross W. F., Hillebrand H., Larson J. H, Xenopoulos M. A., Yoshida T. Threshold elemental ratios of carbon and phosphorus in aquatic consumers. Ecology Letters, 2006, vol. 9, no. 7, pp. 774–779. https://doi.org/10.1111/j.1461-0248.2006.00919.x
Richman S., Rogers J. N. The feeding of Calanus helgolandicus on synchronously growing populations of the marine diatom Ditylurn brightwellii. Limnology and Oceanography, 1969, vol. 14, no. 5, pp. 701–709. https://doi.org/10.4319/lo.1969.14.5.0701
Gons H. J., Burger-Wiersma T., Otten J. H., Rijkeboer M. Coupling of phytoplankton and detritus in a shallow, eutrophic lake (Lake Loosdrecht, The Netherlands). Hydrobiologia, 1992, vol. 233, no. 1–3, pp. 51–59. https://doi.org/10.1007/bf00016095
Otten J. H., Gons H. J., Rijkeboer M. Dynamics of phytoplankton detritus in a shallow, eutrophic lake (Lake Loosdrecht, The Netherlands). Hydrobiologia, 1992, vol. 233, no. 1–3, pp. 61–67. https://doi.org/10.1007/bf00016096
Andersen T., Hessen D. O. Carbon, nitrogen, and phosphorus content of freshwater zooplankton. Limnology and Oceanography, 1991, vol. 36, no. 4, pp. 807–814. https://doi.org/10.4319/lo.1991.36.4.0807
Hessen D. O., Lyche A. Inter- and intraspecific variations in zooplankton element composition. Archiv für Hydrobiologia, 1991, vol. 121, no. 3, pp. 343–353. https://doi.org/10.1127/archiv-hydrobiol/121/1991/343
https://doklady.belnauka.by/jour/article/view/1099
doi:10.29235/1561-8323-2022-66-6-595-604
op_rights Authors who publish with this journal agree to the following terms:Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
Авторы, публикующие в данном журнале, соглашаются со следующим:Авторы сохраняют за собой авторские права на работу и предоставляют журналу право первой публикации работы на условиях лицензии Creative Commons Attribution License, которая позволяет другим распространять данную работу с обязательным сохранением ссылок на авторов оригинальной работы и оригинальную публикацию в этом журнале.Авторы сохраняют право заключать отдельные контрактные договорённости, касающиеся не-эксклюзивного распространения версии работы в опубликованном здесь виде (например, размещение ее в институтском хранилище, публикацию в книге), со ссылкой на ее оригинальную публикацию в этом журнале.Авторы имеют право размещать их работу в сети Интернет (например в институтском хранилище или персональном сайте) до и во время процесса рассмотрения ее данным журналом, так как это может привести к продуктивному обсуждению и большему количеству ссылок на данную работу (См. The Effect of Open Access).
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spelling ftjdnasb:oai:oai.dan.elpub.ru:article/1099 2023-05-15T14:28:23+02:00 Stoichiometry and planktonic communities structure in littoral and pelagic zones of two lakes with different trophic types in Belarus Cтехиометрия и структура планктонных сообществ в литорали и пелагиали двух озер разного трофического статуса в Беларуси Zh. F. Buseva Sh. G. Farahani V. I. Razlutskij E. A. Sysova N. N. Maisak K. V. Myagkova P. C. Frost Ж. Ф. Бусева Ш. Г. Фарахани В. И. Разлуцкий Е. A. Сысова Н. Н. Майсак К. В. Мягкова П. С. Фрост We would like to acknowledge Dr. V.P. Semenchenko the head of Laboratory of Hydrobiology Corresponding Member of the National Academy of Sciences of Belarus, for his valuable comments, Belarusian State University, Faculty of Biology and T.V. Zhukova Head of Naroch biological station and its staff – E.A. Zhuravliova and E.I. Lapitskaja for their technical assistance. This work was supported by BRFFR (grant no. B17-037). Благодарим за ценные комментарии заведующего лабораторией гидробиологии члена-корреспондента НАН Беларуси В.П. Семенченко, Белорусский государственный университет, биологический факультет и Т.В. Жукову, начальника Нарочанской биологической станции и ее сотрудников – Е.А. Журавлеву и Е.И. Лапицкую за техническую помощь. Работа выполнена при поддержке БРФФИ (грант № B17-037). 2023-01-03 application/pdf https://doklady.belnauka.by/jour/article/view/1099 https://doi.org/10.29235/1561-8323-2022-66-6-595-604 eng eng The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka" https://doklady.belnauka.by/jour/article/view/1099/1098 Sterner R. W., Andersen T., Elser J. J., Hessen D. O., Hood J. M., McCauley E., Urabe J. Scale-dependent carbon : nitrogen : phosphorus seston stoichiometry in marine and freshwaters. Limnology and Oceanography, 2008, vol. 53, no. 3, pp. 1169–1180. https://doi.org/10.4319/lo.2008.53.3.1169 Sterner R. W., Elser J. J. Ecological stoichiometry: the biology of elements from molecules to the biosphere. New Jersey, 2003. Vol. 10. 572 p. https://doi.org/10.1515/9781400885695 Sterner R. W. The ratio of nitrogen to phosphorus resupplied by herbivores: zooplankton and the algal competitive arena. American Naturalist, 1990, vol. 136, no. 2, pp. 209–229. https://doi.org/10.1086/285092 Frost P. C., Evans-White M. A., Finkel Z. V., Jensen T. C., Matzek V. Are you what you eat? Physiological constraints on organismal stoichiometry in an elementally imbalanced world. Oikos, 2005, vol. 109, no. 1, pp. 18–28. https://doi.org/10.1111/j.0030-1299.2005.14049.x Antenucci J., Imberger J. The effectiveness of reservoirs as water quality barriers. Cadee K., ed. The effectiveness of reservoirs as water quality barriers. Australia, Perth, 2003. 354 p. Kolding J., van Zwieten P. A. M. Relative lake level fluctuations and their influence on productivity and resilience in tropical lakes and reservoirs. Fisheries Research, 2012, vol. 115–116, pp. 99–109. https://doi.org/10.1016/j.fishres.2011.11.008 Dubovskaya O. P., Semenchenko V. P., Gladyshev M. I., Buseva J. F., Razlutskij V. I. Non-predatory mortality indices of cladoceran zooplankton in the pelagial and littoral of a shallow meso-eutrophic lake. Doklady Biological Sciences, 2007, vol. 416, no. 1, pp. 391–393. https://doi.org/10.1134/s0012496607050201 Elser J. J., O’Brien W. J., Dobberfuhl D. R., Dowling T. E. The evolution of ecosystem processes: growth rate and elemental stoichiometry of a key herbivore in temperate and arctic habitats. Journal of Evolutionary Biology, 2000, vol. 13, no. 5, pp. 845–853. https://doi.org/10.1046/j.1420-9101.2000.00215.x Elser J. J., Hassett R. P. A stoichiometric analysis of the zooplankton–phytoplankton interaction in marine and freshwater ecosystems. Nature, 1994, vol. 370, no. 6486, pp. 211–213. https://doi.org/10.1038/370211a0 Tilman D., Kiesling R., Sterner R., Kilham S. S., Johnson F. Green, blue-green and diatom algae: taxonomic differences in competitive ability for phosphorus, silicon and nitrogen. Archiv für Hydrobiologie, 1986, vol. 106, pp. 473–485. Jasser I. The influence of macrophytes on a phytoplankton community in experimental conditions. Hydrobiologia, 1995, vol. 306, no. 1, pp. 21–32. https://doi.org/10.1007/bf00007855 Frost P. C., Benstead J. P., Cross W. F., Hillebrand H., Larson J. H, Xenopoulos M. A., Yoshida T. Threshold elemental ratios of carbon and phosphorus in aquatic consumers. Ecology Letters, 2006, vol. 9, no. 7, pp. 774–779. https://doi.org/10.1111/j.1461-0248.2006.00919.x Richman S., Rogers J. N. The feeding of Calanus helgolandicus on synchronously growing populations of the marine diatom Ditylurn brightwellii. Limnology and Oceanography, 1969, vol. 14, no. 5, pp. 701–709. https://doi.org/10.4319/lo.1969.14.5.0701 Gons H. J., Burger-Wiersma T., Otten J. H., Rijkeboer M. Coupling of phytoplankton and detritus in a shallow, eutrophic lake (Lake Loosdrecht, The Netherlands). Hydrobiologia, 1992, vol. 233, no. 1–3, pp. 51–59. https://doi.org/10.1007/bf00016095 Otten J. H., Gons H. J., Rijkeboer M. Dynamics of phytoplankton detritus in a shallow, eutrophic lake (Lake Loosdrecht, The Netherlands). Hydrobiologia, 1992, vol. 233, no. 1–3, pp. 61–67. https://doi.org/10.1007/bf00016096 Andersen T., Hessen D. O. Carbon, nitrogen, and phosphorus content of freshwater zooplankton. Limnology and Oceanography, 1991, vol. 36, no. 4, pp. 807–814. https://doi.org/10.4319/lo.1991.36.4.0807 Hessen D. O., Lyche A. Inter- and intraspecific variations in zooplankton element composition. Archiv für Hydrobiologia, 1991, vol. 121, no. 3, pp. 343–353. https://doi.org/10.1127/archiv-hydrobiol/121/1991/343 https://doklady.belnauka.by/jour/article/view/1099 doi:10.29235/1561-8323-2022-66-6-595-604 Authors who publish with this journal agree to the following terms:Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access). Авторы, публикующие в данном журнале, соглашаются со следующим:Авторы сохраняют за собой авторские права на работу и предоставляют журналу право первой публикации работы на условиях лицензии Creative Commons Attribution License, которая позволяет другим распространять данную работу с обязательным сохранением ссылок на авторов оригинальной работы и оригинальную публикацию в этом журнале.Авторы сохраняют право заключать отдельные контрактные договорённости, касающиеся не-эксклюзивного распространения версии работы в опубликованном здесь виде (например, размещение ее в институтском хранилище, публикацию в книге), со ссылкой на ее оригинальную публикацию в этом журнале.Авторы имеют право размещать их работу в сети Интернет (например в институтском хранилище или персональном сайте) до и во время процесса рассмотрения ее данным журналом, так как это может привести к продуктивному обсуждению и большему количеству ссылок на данную работу (См. The Effect of Open Access). CC-BY Doklady of the National Academy of Sciences of Belarus; Том 66, № 6 (2022); 595-604 Доклады Национальной академии наук Беларуси; Том 66, № 6 (2022); 595-604 2524-2431 1561-8323 10.29235/1561-8323-2022-66-6 зоопланктон shallow lakes pelagic zone littoral phytoplankton zooplankton мелководные озера пелагиаль литоральная зона фитопланктон info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2023 ftjdnasb https://doi.org/10.29235/1561-8323-2022-66-6-595-604 https://doi.org/10.29235/1561-8323-2022-66-6 https://doi.org/10.4319/lo.2008.53.3.1169 https://doi.org/10.1515/9781400885695 https://doi.org/10.1086/285092 https://doi.org/10.1016/j.fishres.20 2023-01-10T17:31:42Z Stoichiometric C : N : P ratios were compared between primary producers in littoral and pelagic ecosystems of mesotrophic relatively shallow lake Obsterno and shallow macrophyte covered low trophic lake Nobisto from May to October over the next two years. Elemental seston ratios of lake Obsterno revealed smaller differences between littoral and pelagic zones in comparison with lake Nobisto in 2017. During the studied period, in the both lakes, the seston C : N and C : P ratios were higher than the Redfield ratio (106 : 16 : 1 C : N : P) on most dates and N : P was always more than 16. Pelagic C : P and N : P ratios in lake Obsterno were the highest in May in 2017, July and September in 2018 with significant differences between littoral and pelagic zones. N : P ratios decreased in October but there were no significant differences among habitats. In lake Nobisto in 2018, seston C : P and N : P ratios increased from May to July in littoral and pelagic zones but then decreased in September to October. Our research shows differences in stoichiometric ratios in littoral and pelagic zones of these two lakes, which indicates food quality (seston C : N : P ratios) differences for zooplankton species depending on season and location. Изучали стехиометрию сестона (соотношения C : N : P) двух мелководных озер разной трофности – мезотрофного озера Обстерно и дистрофного макрофитного типа озера Нобисто в течение двух последовательных лет. Сравнивали сезонные изменения в стехиометрии продуцентов в литоральной и пелагической зонах. Соотношения элементов в сестоне оз. Обстерно выявили меньшие различия между литоральной и пелагической зонами по сравнению с оз. Нобисто в 2017 г. В течение исследуемого периода в обоих озерах соотношения C : N и C : P в сестоне были выше классического соотношения Редфилда (C106 : N16 : P1), а соотношение N : P всегда превышало 16. Соотношения C : P в пелагиали оз. Обстерно имели самые высокие показатели в мае 2017 г., а N : P в июле и сентябре 2018 г. со значимыми различиями между литоральной и ... Article in Journal/Newspaper Arctic Doklady of the National Academy of Sciences of Belarus (E-Journal) Doklady of the National Academy of Sciences of Belarus 66 6 595 604