Fluxes and composition of sediment particles in the water column of Southern Lake Baikal between 1999 and 2021

Authors

  • Vologina E.G. 1
  • Sturm M. 2
  • Budnev N.M. 3
    • 1 Institute of the Earth’s Crust, Siberian Branch, Russian Academy of Sciences, Lermontov Str., 128, Irkutsk, 664033, Russia
    2 Swiss Federal Institute of Aquatic Science and Technology, CH-8600 Dubendorf, Switzerland
    3 Irkutsk State University, K. Marx Str., 1, Irkutsk, 664003, Russia

DOI:

https://doi.org/10.31951/2658-3518-2025-A-4-505

Keywords:

Lake Baikal, sediment traps, fluxes of sedimentary matter, biogenic silica, diatoms, bottom sediments

Abstract

This study investigates in detail natural processes of modern sedimentation in South Baikal. The article presents data on the total flux of sedimentary matter, collected between March 1999 and March 2021. The quantity and composition of the recovered material is largely determined by SiO2bio, which is directly dependent on annual blooms of diatoms in the lake. Since 2010, particle fluxes have generally increased. At the same time, there was a change in the dominant diatom species. So called “Melosira years” were replaced by years with increased productivity of species of the genus Synedra. Presumably, this happened due to climate change.

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Published

2025-08-31

Issue

2025: №4 (SI:8VBC)

Section

Articles

License

Copyright (c) 2025 Limnology and Freshwater Biology

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

Creative Commons License
This work is distributed under the Creative Commons Attribution-NonCommercial 4.0 International License.