Biogenic elements and organic matter production in the ecosystem of Lake Arey, Transbaikal region, Russia

Abstract Maintaining an ecological balance of Lake Arey is crucial in terms of nature conservation. Lake Arey is located in Eastern Siberia and is a central object of a designated conservation area of regional significance. The lake is used for recreation (organized and unorganized tourism, sport fi...

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Bibliographic Details
Published inIOP conference series. Earth and environmental science Vol. 908; no. 1; pp. 12041 - 12047
Main Authors Tsybekmitova, G Ts, Morozova, M O
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.11.2021
Subjects
Ammonium
Anthropogenic factors
Aquatic ecosystems
Carotenoids
Chemical oxygen demand
Chlorophyll
Conservation areas
Dissolved oxygen
Ecological balance
Ecology
Eutrophication
Fishing
Freshwater lakes
Mineralization
Nature conservation
Organic matter
Oxidation
Phosphorus
Pigments
Sport fishing
Tourism
Turbidity
Water bodies
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Summary:Abstract Maintaining an ecological balance of Lake Arey is crucial in terms of nature conservation. Lake Arey is located in Eastern Siberia and is a central object of a designated conservation area of regional significance. The lake is used for recreation (organized and unorganized tourism, sport fishing, mud collection for balneological purposes) not only by residents but also by holidaymakers from other regions. In terms of mineralization level, Lake Arey is a freshwater body. Significant factors affecting the aquatic ecosystem are temperature, TDS, pH and dissolved oxygen, depth, and turbidity. High contents of ammonium ions are observed in the ecosystem. The concentration of dissolved inorganic phosphorus is 23.6% of total phosphorus. The ratio of PO (permanganate oxidizing ability of organic matter) to COD (chemical oxygen demand) indicates active processes of production, mineralization, and transformation of organic matter in the water body. Carotenoids prevail in planktonic pigments. The chlorophyll a amount is insignificant. The chlorophyll b content increases from July to September. Currently, Lake Arey belongs to the α-mesotrophic type of water body. However, increased anthropogenic load and high-water years can promote eutrophication processes.
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/908/1/012041