Biogeosciences
Biogeosciences
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Articles | Volume 21, issue 1
Articles | Volume 21, issue 1
https://doi.org/10.5194/bg-21-93-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-21-93-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 21, issue 1
Research article
 | 
03 Jan 2024
Research article |  | 03 Jan 2024

Temporary stratification promotes large greenhouse gas emissions in a shallow eutrophic lake

Thomas A. Davidson, Martin Søndergaard, Joachim Audet, Eti Levi, Chiara Esposito, Tuba Bucak, and Anders Nielsen

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Short summary
Shallow lakes and ponds undergo frequent stratification in summer months. Here we studied how this affects greenhouse gas (GHG) emissions. We found that stratification caused anoxia in the bottom waters, driving increased GHG emissions, in particular methane released as bubbles. In addition, methane and carbon dioxide accumulated in the bottom waters during stratification, leading to large emissions when the lake mixed again.
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