Calcite precipitation: The forgotten piece of lakes' carbon cycle
Details
Serval ID
serval:BIB_431AC8B996BE
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Calcite precipitation: The forgotten piece of lakes' carbon cycle
Journal
Science Advances
ISSN
2375-2548
ISSN-L
2375-2548
Publication state
Published
Issued date
11/2024
Peer-reviewed
Oui
Volume
10
Number
44
Language
english
Abstract
Lakes emit substantial amounts of carbon dioxide (CO <sub>2</sub> ) into the atmosphere, but why they do remains debated. The long-standing vision of lakes as solely respirators of the organic matter leaking from the soils has been challenged by evidence that inorganic carbon produced by weathering of the catchment bedrock could also support lake CO <sub>2</sub> emissions. How inorganic carbon inputs ultimately generate lake CO <sub>2</sub> outgassing remains a blind spot. We develop and introduce a calcite module in a coupled one-dimensional physical-biogeochemical model that we use to simulate the carbon cycle of the large Lake Geneva over the past 40 years. We mechanistically demonstrate how the so-far neglected process of calcite precipitation boosts net CO <sub>2</sub> emissions at the annual scale. Far from being anecdotal, we show that calcite precipitation could explain CO <sub>2</sub> outgassing across various lakes globally, including some of the largest lakes in the world.
Pubmed
Open Access
Yes
Create date
04/11/2024 17:11
Last modification date
23/01/2025 7:07