Biogeosciences
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Articles | Volume 20, issue 17
Articles | Volume 20, issue 17
https://doi.org/10.5194/bg-20-3613-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-20-3613-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 20, issue 17
Research article
 | 
31 Aug 2023
Research article |  | 31 Aug 2023

Bacterioplankton dark CO2 fixation in oligotrophic waters

Afrah Alothman, Daffne López-Sandoval, Carlos M. Duarte, and Susana Agustí

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Latest update: 18 Apr 2025
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Short summary
This study investigates bacterial dissolved inorganic carbon (DIC) fixation in the Red Sea, an oligotrophic ecosystem, using stable-isotope labeling and spectroscopy. The research reveals that bacterial DIC fixation significantly contributes to total DIC fixation, in the surface and deep water. The study demonstrates that as primary production decreases, the role of bacterial DIC fixation increases, emphasizing its importance with photosynthesis in estimating oceanic carbon dioxide production.
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