Ocean Science
Ocean Science
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Articles | Volume 21, issue 6
Articles | Volume 21, issue 6
https://doi.org/10.5194/os-21-3055-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/os-21-3055-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 21, issue 6
Research article
 | 
19 Nov 2025
Research article |  | 19 Nov 2025

Contribution of dark inorganic carbon fixation to bacterial carbon demand in the oligotrophic Southeastern Mediterranean Sea

Tom Reich, Natalia Belkin, Guy Sisma-Ventura, Hagar Hauzer, Maxim Rubin-Blum, Ilana Berman-Frank, and Eyal Rahav

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Short summary
Dark carbon fixation by chemoautotrophs take a vital part in marine primary productivity. Measured rates can be seen all the way down to the dark layers of the ocean and integrated in our study site come close to the magnitude of photosynthesis. It can also explain about ~ 35 % of the missing organic carbon supply needed by deep microbial communities. By using oceanographic observations and analysis this paper highlights the significant of this overlooked parameter.
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