prirodaПриродные ресурсыNatural resources1810-9810Беларуская навукаpriroda-201Research ArticleБИОЛОГИЧЕСКИЕ РЕСУРСЫBIOLOGICAL RESOURCESТрофический статус озерных экосистем и его связь с основными гидроэкологическими характеристиками водоемов (на примере озер Нарочанского региона, Беларусь)Trophic state of lake ecosystems and its relationship with the main hydroecological characteristics of water bodies: a case study of the lakes of Narochansky region (Belarus)АдамовичБ. В.AdamowichB. V.

Минск

Minsk

belaqualab@gmail.comМихееваТ. М.MikheevaT. M.

Минск

Minsk

КовалевскаяР. З.KovalevskayaR. Z.

Минск

Minsk

ЖуковаТ. В.ZhukovaT. V.

Минск

Minsk

ДубкоН. В.DubkoN. V.

Минск

Minsk

ВересЮ. К.VeresYu. K.

Минск

Белорусский государственный университетBelarusian State University202409012025023029Copyright © Адамович Б.В., Михеева Т.М., Ковалевская Р.З., Жукова Т.В., Дубко Н.В., Верес Ю.К., 20252025Адамович Б.В., Михеева Т.М., Ковалевская Р.З., Жукова Т.В., Дубко Н.В., Верес Ю.К.Adamowich B.V., Mikheeva T.M., Kovalevskaya R.Z., Zhukova T.V., Dubko N.V., Veres Y.K.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://priroda.belnauka.by/jour/article/view/201

Изучение трофического статуса и его связь с основными гидроэкологическими характеристиками водоемов проводили на 11 озерах Нарочанского региона в 2013–2023 гг., которые представляют собой водоемы в широком диапазоне трофности – от олиго-мезотрофных до высокоэвтрофных. Трофический статус водоемов оценивали по индексу трофического состояния Карлсона (Trophy State Index, TSI). Результаты исследований показали, что TSI является адекватным показателем трофического статуса. Средневзвешенная для всей толщи воды валовая первичная продукция и деструкция планктона демонстрировали сильную и статистически значимую связь с уровнем трофности водоемов, оцененным по TSI. Отмечена сильная связь содержания хлорофилла с концентрацией общего фосфора. Связь хлорофилла с концентрацией общего азота значительно слабее, т. е. в изученных озерах основным лимитирующим биогенным элементом для развития фитопланктона является фосфор. Не отмечено никакой связи содержания хлорофилла и TSI cо средней температурой, а также концентрацией растворенного кислорода в гиполимнионе. Оценка трофического статуса должна быть обязательным элементом проведения любых лимнологических исследований с целью формирования объективного представления о состоянии водного объекта.

The study of trophic status and its relationship with the main hydroecological characteristics of water bodies was conducted in the 11 lakes of the Narochansky region from 2013 to 2023. The studied lakes of the Narochansky region span a considerable range of trophic status, from oligo-mesotrophic to highly eutrophic. The trophic status of the water bodies was evaluated using the Carlson’s Trophic State Index (TSI). The results of our research demonstrate that TSI is an adequate indicator of trophic status. The weighted average gross primary production and plankton decomposition for the entire water column demonstrate a strong and statistically significant relationship with the trophic level of the water bodies assessed by TSI. A strong correlation was observed between chlorophyll content and total phosphorus concentration. The correlation between chlorophyll and total nitrogen concentration is significantly weaker, indicating that phosphorus is the primary limiting nutrient for phytoplankton growth in the studied lakes. No correlation was found between chlorophyll content and TSI with average temperature, as well as dissolved oxygen concentration in the hypolimnion. The assessment of trophic status should be considered an obligatory component of any limnological research endeavor, aimed at establishing an objective understanding of the condition of a water body.

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The authors declare that there are no conflicts of interest present.