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.
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.
the Creative Commons Attribution 4.0 License.
Bacterioplankton dark CO2 fixation in oligotrophic waters
Afrah Alothman
CORRESPONDING AUTHOR
Red Sea Research Centre, Biological and Environmental Science and
Engineering Division, King Abdullah University of Science and Technology
(KAUST), Thuwal, 23955, Saudi Arabia
Daffne López-Sandoval
Red Sea Research Centre, Biological and Environmental Science and
Engineering Division, King Abdullah University of Science and Technology
(KAUST), Thuwal, 23955, Saudi Arabia
Coastal and Marine Resources Core Lab (CMR), King Abdullah
University of Science and Technology (KAUST), Thuwal, 23955, Saudi Arabia
Carlos M. Duarte
Red Sea Research Centre, Biological and Environmental Science and
Engineering Division, King Abdullah University of Science and Technology
(KAUST), Thuwal, 23955, Saudi Arabia
Susana Agustí
Red Sea Research Centre, Biological and Environmental Science and
Engineering Division, King Abdullah University of Science and Technology
(KAUST), Thuwal, 23955, Saudi Arabia
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Cited
14 citations as recorded by crossref.
- Relative contribution of dark carbon fixation to total carbon uptake along a latitudinal transect in the Seychelles-Chagos thermocline ridge, western Indian ocean W. Cho et al. https://doi.org/10.1016/j.marenvres.2026.108014
- Assessing the contribution of euphausiids’ fecal pellets to greenhouse gas inventories in the Eastern South Pacific P. Ruz-Moreno et al. https://doi.org/10.3389/fmars.2026.1743607
- Microbial inorganic carbon fixation characteristics in the largest saline lake of China during the ice-covered period Y. Han et al. https://doi.org/10.1007/s44246-026-00291-3
- High contribution of dark dissolved inorganic carbon uptake to microbial carbon cycling in a shallow Mediterranean basin V. Manna et al. https://doi.org/10.1186/s44375-025-00002-0
- Contribution of dark inorganic carbon fixation to bacterial carbon demand in the oligotrophic Southeastern Mediterranean Sea T. Reich et al. https://doi.org/10.5194/os-21-3055-2025
- Activity of microbial dark carbon fixation along the gradient of hydrothermal plume inflow by subtropical shallow-water vents P. Ho et al. https://doi.org/10.1016/j.ecss.2026.109862
- Minor contribution of ammonia oxidizers to inorganic carbon fixation in the ocean B. Bayer et al. https://doi.org/10.1038/s41561-025-01798-x
- Substantial dark carbon fixation contributes to carbon sink in human-impacted estuarine and coastal waters R. Cui et al. https://doi.org/10.1007/s44218-025-00091-z
- Heterotrophic inorganic carbon fixation varies with temperature and resource availability in marine and soil bacterial isolates E. Brown et al. https://doi.org/10.1128/aem.00628-26
- Ecological distribution and metabolic potential of Marine Group II archaea in the Eastern Indian Ocean: Evidence for heterotrophic carbon fixation J. Dai et al. https://doi.org/10.1016/j.marenvres.2025.107446
- Oxygen Minimum Zone and Organic Carbon Structure Benthic Prokaryotic Communities and Metabolism in Warm Deep-Red Sea Sediments W. Liu et al. https://doi.org/10.3390/microorganisms14061191
- Does oligotrophy favor chemoautotrophy over photoautotrophy? T. Reich et al. https://doi.org/10.1016/j.pocean.2025.103633
- Evaluating the effects of desalination antiscalants on phytoplankton and bacterial communities in oligotrophic environments E. Rahav et al. https://doi.org/10.1016/j.desal.2024.118110
- Flow of heterotrophic production in oligotrophic ocean waters A. Alothman et al. https://doi.org/10.3389/fmicb.2025.1530627
14 citations as recorded by crossref.
- Relative contribution of dark carbon fixation to total carbon uptake along a latitudinal transect in the Seychelles-Chagos thermocline ridge, western Indian ocean W. Cho et al. https://doi.org/10.1016/j.marenvres.2026.108014
- Assessing the contribution of euphausiids’ fecal pellets to greenhouse gas inventories in the Eastern South Pacific P. Ruz-Moreno et al. https://doi.org/10.3389/fmars.2026.1743607
- Microbial inorganic carbon fixation characteristics in the largest saline lake of China during the ice-covered period Y. Han et al. https://doi.org/10.1007/s44246-026-00291-3
- High contribution of dark dissolved inorganic carbon uptake to microbial carbon cycling in a shallow Mediterranean basin V. Manna et al. https://doi.org/10.1186/s44375-025-00002-0
- Contribution of dark inorganic carbon fixation to bacterial carbon demand in the oligotrophic Southeastern Mediterranean Sea T. Reich et al. https://doi.org/10.5194/os-21-3055-2025
- Activity of microbial dark carbon fixation along the gradient of hydrothermal plume inflow by subtropical shallow-water vents P. Ho et al. https://doi.org/10.1016/j.ecss.2026.109862
- Minor contribution of ammonia oxidizers to inorganic carbon fixation in the ocean B. Bayer et al. https://doi.org/10.1038/s41561-025-01798-x
- Substantial dark carbon fixation contributes to carbon sink in human-impacted estuarine and coastal waters R. Cui et al. https://doi.org/10.1007/s44218-025-00091-z
- Heterotrophic inorganic carbon fixation varies with temperature and resource availability in marine and soil bacterial isolates E. Brown et al. https://doi.org/10.1128/aem.00628-26
- Ecological distribution and metabolic potential of Marine Group II archaea in the Eastern Indian Ocean: Evidence for heterotrophic carbon fixation J. Dai et al. https://doi.org/10.1016/j.marenvres.2025.107446
- Oxygen Minimum Zone and Organic Carbon Structure Benthic Prokaryotic Communities and Metabolism in Warm Deep-Red Sea Sediments W. Liu et al. https://doi.org/10.3390/microorganisms14061191
- Does oligotrophy favor chemoautotrophy over photoautotrophy? T. Reich et al. https://doi.org/10.1016/j.pocean.2025.103633
- Evaluating the effects of desalination antiscalants on phytoplankton and bacterial communities in oligotrophic environments E. Rahav et al. https://doi.org/10.1016/j.desal.2024.118110
- Flow of heterotrophic production in oligotrophic ocean waters A. Alothman et al. https://doi.org/10.3389/fmicb.2025.1530627
Saved (final revised paper)
Latest update: 03 Oct 2026
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.
This study investigates bacterial dissolved inorganic carbon (DIC) fixation in the Red Sea, an...
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