Evolution of Lake Ladoga as recorded in litho- and biostratigraphy of a small coastal lake

Authors

  • Ludikova A.V. 1
  • Kuznetsov D.D. 1
  • Subetto D.A. 2
  • Belkina N.A. 3
    • 1 Institute of Limnology of the Russian Academy of Sciences – SPC RAS, Sevastyanova str. 9, St. Petersburg, 196105, Russia
    2 Herzen State Pedagogical University of Russia, Moika River emb. 48, St. Petersburg, 191186, Russia
    3 Northern Water Problems Institute, Karelian Research Centre, Alexander Nevsky pr. 50, Petrozavodsk, 185910, Russia

DOI:

https://doi.org/10.31951/2658-3518-2024-A-4-384

Keywords:

lake sediments, diatoms, chrysophyte cysts, organic matter content, Holocene, lake-level changes, Baltic Ice Lake

Abstract

The study is focused on the litho- and biostratigraphic record of Lake Lavijarvi, presently a small lake in the closest vicinity from the Ladoga coast, and formerly a sheltered bay of Lake Ladoga. Several stages of its evolution were revealed that are characterized with different organic matter content in the sediments, diatom assemblages composition and abundances of siliceous microalgae remains. It has been demonstrated that at the earlier stages, the environments in the basin of Lake Lavijarvi were similar to those in Lake Ladoga. Later in the Holocene, local factors became more pronounced, and the conditions different from those in the open-water part of Lake Ladoga established in the basin of Lake Lavijarvi. The regression of Lake Ladoga resulted in the isolation of Lake Lavijarvi and the beginning of its small-lake stage after ca. 3900 cal. BP.

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Published

2024-08-26

Issue

2024: №4 (SI:Paleo2024)

Section

Articles

License

Copyright (c) 2024 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.