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Modeling biogeochemical processes in a freshwater lake during the spring thermal bar

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  • Tsydenov, Bair O.

Abstract

This article describes a coupled physical–biological model for reproducing the ecological processes in a freshwater lake during the evolution of the thermal bar, a phenomenon of sinking of maximum density waters in a narrow zone. The biological part of the model includes 10 prognostic variables: nitrate, phosphate, ammonium, chlorophyll a, phytoplankton, zooplankton, and nitrate and phosphate detritus of small and large sizes. The results of modeling of hydrodynamic processes in Barguzin Bay of Lake Baikal using meteorological data for June 2019 demonstrate a short-term period of the thermal bar existence. The analysis of spatial distributions of biochemical variables of the model showed that the thermal bar acts as a natural barrier limiting the transfer of phosphates and plankton to the open lake.

Suggested Citation

  • Tsydenov, Bair O., 2022. "Modeling biogeochemical processes in a freshwater lake during the spring thermal bar," Ecological Modelling, Elsevier, vol. 465(C).
    • Handle: RePEc:eee:ecomod:v:465:y:2022:i:c:s0304380022000059
    DOI: 10.1016/j.ecolmodel.2022.109877
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    References listed on IDEAS

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    1. Udriste C & Tevy I, 2019. "Growth of Phytoplankton," Biomedical Journal of Scientific & Technical Research, Biomedical Research Network+, LLC, vol. 13(2), pages 9793-9794, January.
    2. Michael J. Behrenfeld & Robert T. O’Malley & Emmanuel S. Boss & Toby K. Westberry & Jason R. Graff & Kimberly H. Halsey & Allen J. Milligan & David A. Siegel & Matthew B. Brown, 2016. "Revaluating ocean warming impacts on global phytoplankton," Nature Climate Change, Nature, vol. 6(3), pages 323-330, March.
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