By quantifying carbon fixation in obligate heterotrophic bacteria across the global ocean, we show that about 20% of dark dissolved inorganic carbon (DIC) fixation arises from anaplerotic processes — reaching up to almost half of dark DIC fixation in some regions or conditions.
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This is a summary of: Amano, C. et al. Major contribution of anaplerosis to inorganic carbon fixation in the dark ocean. Nat. Geosci. https://doi.org/10.1038/s41561-026-02013-1 (2026).
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Heterotrophic bacteria in the dark ocean are major contributors to CO2 fixation.
Nat. Geosci. (2026). https://doi.org/10.1038/s41561-026-02014-0
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DOI: https://doi.org/10.1038/s41561-026-02014-0
Source: Ecology - nature.com
