Articles | Volume 19, issue 11
Biogeosciences, 19, 2759–2777, 2022
https://doi.org/10.5194/bg-19-2759-2022
Biogeosciences, 19, 2759–2777, 2022
https://doi.org/10.5194/bg-19-2759-2022
Research article
02 Jun 2022
Research article | 02 Jun 2022

A modern snapshot of the isotopic composition of lacustrine biogenic carbonates – records of seasonal water temperature variability

Inga Labuhn et al.

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Short summary
This study presents the isotopic composition of recent biogenic carbonates from several lacustrine species which calcify during different times of the year. The authors demonstrate that when biological offsets are corrected, the dominant cause of differences between species is the seasonal variation in temperature-dependent fractionation of oxygen isotopes. Consequently, such carbonates from lake sediments can provide proxy records of seasonal water temperature changes in the past.
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