danДоклады Национальной академии наук БеларусиDoklady of the National Academy of Sciences of Belarus1561-83232524-2431The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"10.29235/1561-8323-2022-66-6-595-604dan-1099Research ArticleБИОЛОГИЯBIOLOGYCтехиометрия и структура планктонных сообществ в литорали и пелагиали двух озер разного трофического статуса в БеларусиStoichiometry and planktonic communities structure in littoral and pelagic zones of two lakes with different trophic types in Belarushttps://orcid.org/0000-0001-8663-6808БусеваЖ. Ф.BusevaZh. F.

Бусева Жанна Федоровна – кандидат биологических наук, ведущий научный сотрудник.

ул. Академическая, 27, 220072, Минск

Zhanna F. Buseva – Ph. D. (Biology), Leading Researcher, Scientific and  Practical  Center  of  the  National  Academy of Sciences of Belarus for Bioresources.

27, Akademicheskaya Str., 220072, Minsk

buseva_j@mail.ruФараханиШ. Г.FarahaniSh. G.

Фарахани Шабнам Газерани – младший научный сотрудник.

ул. Академическая, 27, 220072, Минск

Shabnam G. Farahani – Junior Researcher, Scientific and Practical Center of the National Academy of Sciences of  Belarus  for  Bioresources.

27, Akademicheskaya  Str., 220072, Minsk

sh.farahani1986@gmail.comhttps://orcid.org/0000-0001-8612-6955РазлуцкийВ. И.RazlutskijV. I.

Разлуцкий Владимир Ильич – кандидат биологических наук, доцент, ведущий научный сотрудник.

ул. Академическая, 27, 220072, Минск

Vladimir I. Razlutskij – Ph. D. (Biology), Leading Researcher, Associate Professor, Scientific and Practical Center of the National Academy of Sciences of Belarus for Bioresources.

27, Akademicheskaya Str., 220072, Minsk

vladimirrazl@gmail.comСысоваЕ. A.SysovaE. A.

Cысова Елена Александровна – кандидат биологических наук, старший научный сотрудник.

ул. Академическая, 27, 220072, Минск

Elena A. Sysova – Ph. D. (Biology), Senior Researcher. Scientific and  Practical  Center  of  the  National  Academy of Sciences of Belarus for Bioresources.

27, Akademicheskaya Str., 220072, Minsk

sysovaelena@mail.ruhttps://orcid.org/0000-0001-8872-1141МайсакН. Н.MaisakN. N.

Майсак Наталия Николаевна – научный сотрудник.

ул. Академическая, 27, 220072, Минск

Natallia N. Maisak – Researcher, Scientific and Practical Center of the National Academy of Sciences of Belarus for Bioresources.

27, Akademicheskaya Str., 220072, Minsk

vok-n@mail.ruМягковаК. В.MyagkovaK. V.

Мягкова Ксения Владимировна – младший научный сотрудник.

ул. Академическая, 27, 220072, Минск

Ksenia V. Myagkova – Junior Researcher, Scientific and Practical Center of the National Academy of Sciences of Belarus for Bioresources.

27, Akademicheskaya Str., 220072, Minsk

myksen@mail.ruhttps://orcid.org/0000-0002-8267-1726ФростП. С.FrostP. C.

Фрост Поль С. – кандидат биологических наук, профессор.

Петербору, ON K9J 7B8

Paul C. Frost– Ph. D. (Biology), Professor, Trent University.

Peterborough, ON K9J 7B8

paulfrost@trentu.caНаучно-практический центр Национальной академии наук Беларуси по биоресурсамScientific and Practical Center of the National Academy of Sciences of Belarus for BioresourcesУниверситет ТрентаTrent University202203012023666595604Copyright © Бусева Ж.Ф., Фарахани Ш.Г., Разлуцкий В.И., Сысова Е.A., Майсак Н.Н., Мягкова К.В., Фрост П.С., 20232023Бусева Ж.Ф., Фарахани Ш.Г., Разлуцкий В.И., Сысова Е.A., Майсак Н.Н., Мягкова К.В., Фрост П.С.Buseva Z.F., Farahani S.G., Razlutskij V.I., Sysova E.A., Maisak N.N., Myagkova K.V., Frost P.C.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://doklady.belnauka.by/jour/article/view/1099

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 пелагической зонами, но соотношения N : P уменьшились в октябре и не различались между местообитаниями. В оз. Нобисто в 2018 г. соотношения C : P и N : P в сестоне увеличивались с мая по июль в прибрежной и пелагической зонах, но затем снижались осенью. Как показали наши исследования, сезонные различия в стехиометрии сестона двух озер (соотношение C : N : P как показатель качества пищи) в разных местообитаниях отражают видовой состав фитопланктона, а также структуру сообществ зоопланктона, изменяющуюся в течение сезона и между местообитаниями.

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.

стехиометрия сестонамелководные озерапелагиальлиторальная зонафитопланктонзоопланктонSeston stoichiometryshallow lakespelagic zonelittoralphytoplanktonzooplanktonБлагодарим 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).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).ReferencesSterner R. 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The authors declare that there are no conflicts of interest present.