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.
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.
the Creative Commons Attribution 4.0 License.
Research article
| 
03 Jan 2024
Research article |
| 03 Jan 2024
| 03 Jan 2024
Temporary stratification promotes large greenhouse gas emissions in a shallow eutrophic lake
Thomas A. Davidson
CORRESPONDING AUTHOR
Lake Ecology, Department of Ecoscience, Aarhus University, Aarhus, Denmark
WATEC – Aarhus University Centre for Water Technology, Aarhus University, Aarhus, Denmark
Martin Søndergaard
Lake Ecology, Department of Ecoscience, Aarhus University, Aarhus, Denmark
WATEC – Aarhus University Centre for Water Technology, Aarhus University, Aarhus, Denmark
Sino-Danish Center for Education and Research (SDC), Beijing, China
Joachim Audet
Lake Ecology, Department of Ecoscience, Aarhus University, Aarhus, Denmark
WATEC – Aarhus University Centre for Water Technology, Aarhus University, Aarhus, Denmark
Lake Ecology, Department of Ecoscience, Aarhus University, Aarhus, Denmark
Chiara Esposito
Lake Ecology, Department of Ecoscience, Aarhus University, Aarhus, Denmark
WATEC – Aarhus University Centre for Water Technology, Aarhus University, Aarhus, Denmark
Tuba Bucak
Lake Ecology, Department of Ecoscience, Aarhus University, Aarhus, Denmark
Anders Nielsen
Lake Ecology, Department of Ecoscience, Aarhus University, Aarhus, Denmark
WaterITech Aps, Døjsøvej 1, 8660 Skanderborg, Denmark
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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.
Shallow lakes and ponds undergo frequent stratification in summer months. Here we studied how...
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