{
  "abstract": "Although the hydrogen and oxygen content of marine phytoplankton plays a critical role in determining oceanic O₂ consumption rates, shaping habitat for anaerobic metabolism, they are often assumed to be constant in biogeochemical studies, resulting in biased estimates of respiration rates. Here, by simulating phytoplankton allocation in a general circulation model, we predict latitudinal variations in phytoplankton C:H:N:O:P composition and corresponding O₂ demand. These patterns are driven by physiological adaptation to environmental conditions and are consistent with observations. Subtropical phytoplankton have more C─O bonds and lower O₂ demand, as they contain more carbohydrates than higher-latitude populations. We test the sensitivity of O₂ inventory and regenerated C via the biological pump (Csoft) to plausible bounds of cellular allocation and find that the global O₂ inventory and Csoft decrease by ∼11 and 14%, respectively, when a cell shifts from carbohydrate-rich to protein-rich biomass. Our findings demonstrate that biochemical remodeling of phytoplankton composition mediates large-scale patterns and oceanic budgets of O₂ and C.",
  "abstract_shown": true,
  "affiliations": [
    "Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, USA.",
    "Graduate School of Oceanography, University of Rhode Island, Narragansett, RI, USA.",
    "Center for Sustainability Science and Strategy, Massachusetts Institute of Technology, Cambridge, MA, USA.",
    "Biology Department, Woods Hole Oceanographic Institution, Woods Hole, MA, USA."
  ],
  "article_type": "Research Article",
  "arxiv": null,
  "author_total": 6,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Shlomit Sharoni",
      "orcid": "0000-0002-8206-095X"
    },
    {
      "affs": [
        1
      ],
      "name": "Keisuke Inomura",
      "orcid": "0000-0001-9232-7032"
    },
    {
      "affs": [
        0,
        2
      ],
      "name": "Stephanie Dutkiewicz",
      "orcid": "0000-0002-0380-9679"
    },
    {
      "affs": [
        0
      ],
      "name": "Oliver Jahn",
      "orcid": "0000-0002-0130-5186"
    },
    {
      "affs": [
        3
      ],
      "name": "Gregory L. Britten",
      "orcid": "0000-0003-1391-9086"
    },
    {
      "affs": [
        0
      ],
      "name": "Michael J. Follows",
      "orcid": "0000-0002-3102-0341"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/1a4c24zsewnm7.bib",
  "cited_by": 0,
  "doi": "10.1126/sciadv.aeg6228",
  "fulltext_url": "https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13721998/?tool=EBI",
  "id": "1a4c24zsewnm7",
  "issns": [
    "2375-2548"
  ],
  "landing_url": "https://www.science.org/doi/abs/10.1126/sciadv.aeg6228",
  "language": "eng",
  "licence": "CC-BY-NC",
  "licence_label": "CC BY-NC",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by-nc/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "heading",
      "Earth, Environmental, Ecological, and Space Sciences"
    ],
    [
      "heading",
      "Environmental Studies"
    ],
    [
      "heading",
      "Oceanography"
    ],
    [
      "heading",
      "Research Article"
    ],
    [
      "heading",
      "SciAdv r-articles"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13721998/pdf/?tool=EBI",
  "pmcid": "PMC13721998",
  "pmid": "42962035",
  "published": "2026-10-30",
  "publisher": "American Association for the Advancement of Science (AAAS)",
  "ris": "https://research.draconitic.com/paper/1a4c24zsewnm7.ris",
  "sources": [
    {
      "first_seen": "2026-10-31T00:20:30Z",
      "native_id": "10.1126/sciadv.aeg6228",
      "source": "feed-science",
      "url": "https://www.science.org/doi/abs/10.1126/sciadv.aeg6228"
    },
    {
      "first_seen": "2026-10-31T00:20:32Z",
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      "source": "crossref",
      "url": "https://www.science.org/doi/10.1126/sciadv.aeg6228"
    },
    {
      "first_seen": "2026-10-31T12:21:37Z",
      "native_id": "PMC:PMC13721998",
      "source": "europepmc",
      "url": "https://europepmc.org/article/PMC/PMC13721998"
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    {
      "first_seen": "2026-11-03T12:22:35Z",
      "native_id": "PMC13721998",
      "source": "pmc",
      "url": "https://doi.org/10.1126/sciadv.aeg6228"
    }
  ],
  "subjects": [
    {
      "field": "earth",
      "origin": "heading:Oceanography",
      "subfield": "oceanography"
    }
  ],
  "title": "C:H:N:O:P stoichiometry and oxygen demand of marine organic matter are driven by phytoplankton ecophysiology",
  "title_text": "C:H:N:O:P stoichiometry and oxygen demand of marine organic matter are driven by phytoplankton ecophysiology",
  "type": "peer-reviewed",
  "updated_at": "2026-11-03T12:22:35Z",
  "url": "https://research.draconitic.com/paper/1a4c24zsewnm7",
  "venue": "Science Advances",
  "versions": []
}