Articles | Volume 21, issue 3
https://doi.org/10.5194/bg-21-789-2024
© Author(s) 2024. 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-21-789-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
14 Feb 2024
Research article |
| 14 Feb 2024
| 14 Feb 2024
Marine anoxia initiates giant sulfur-oxidizing bacterial mat proliferation and associated changes in benthic nitrogen, sulfur, and iron cycling in the Santa Barbara Basin, California Borderland
Department of Earth, Planetary, and Space Sciences, University of California, Los Angeles, 595 Charles E. Young Drive East, Los Angeles, CA 90095, USA
De'Marcus Robinson
Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, Math Science Building, 520 Portola Plaza, Los Angeles, CA 90095, USA
Xuefeng Peng
School of Earth, Ocean, and Environment, University of South Carolina, 701 Sumter Street, Columbia, SC 29208, USA
Sebastian J. E. Krause
Department of Earth, Planetary, and Space Sciences, University of California, Los Angeles, 595 Charles E. Young Drive East, Los Angeles, CA 90095, USA
Earth Research Institute, 6832 Ellison Hall, University of California, Santa Barbara, CA 93106-3060, USA
Frank Wenzhöfer
HGF-MPG Joint Research Group for Deep-Sea Ecology and Technology, Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27570 Bremerhaven, Germany
HGF-MPG Joint Research Group for Deep-Sea Ecology and Technology, Max Planck Institute for Marine Microbiology, Celsiusstrasse 1, 28359 Bremen, Germany
Department of Biology, HADAL center, University of Southern Denmark, 5230 Odense M, Denmark
Felix Janssen
HGF-MPG Joint Research Group for Deep-Sea Ecology and Technology, Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27570 Bremerhaven, Germany
HGF-MPG Joint Research Group for Deep-Sea Ecology and Technology, Max Planck Institute for Marine Microbiology, Celsiusstrasse 1, 28359 Bremen, Germany
Na Liu
Department of Earth Science and Marine Science Institute, University of California, Santa Barbara, CA 93106, USA
Jonathan Tarn
Department of Earth Science and Marine Science Institute, University of California, Santa Barbara, CA 93106, USA
Franklin Kinnaman
Department of Earth Science and Marine Science Institute, University of California, Santa Barbara, CA 93106, USA
David L. Valentine
Department of Earth Science and Marine Science Institute, University of California, Santa Barbara, CA 93106, USA
Department of Earth, Planetary, and Space Sciences, University of California, Los Angeles, 595 Charles E. Young Drive East, Los Angeles, CA 90095, USA
Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, Math Science Building, 520 Portola Plaza, Los Angeles, CA 90095, USA
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Cited
11 citations as recorded by crossref.
- Clumped isotopes of methane trace bioenergetics in the environment J. Liu et al. https://doi.org/10.1126/sciadv.adu1401
- Microbial mats in the Río Mayer Formation (Lower Cretaceous), Austral Basin, Argentina: Paleoenvironmental and paleoceanographic significance N. Carmona et al. https://doi.org/10.1111/sed.70070
- Shifts in prokaryotic communities and giant sulphur-oxidising bacteria in response to salmon aquaculture in sub-Antarctic marine sediments C. Aranda et al. https://doi.org/10.1016/j.marpolbul.2025.118694
- A niche for diverse cable bacteria in continental margin sediments overlain by oxygen-deficient waters C. Slomp et al. https://doi.org/10.5194/bg-22-4885-2025
- Contrasting microbial iron metabolism in sediments from oxic and hypoxic estuaries R. Du et al. https://doi.org/10.3389/fmicb.2026.1824768
- The fate of fixed nitrogen in Santa Barbara Basin sediments during seasonal anoxia X. Peng et al. https://doi.org/10.5194/bg-21-3041-2024
- Land-use change simplifies microbiome association networks despite limited diversity changes in river sandbar soils Z. Xiang et al. https://doi.org/10.1007/s11368-026-04311-y
- Chemosynthetic microbial communities formed wrinkle structures in ancient turbidites R. Martindale et al. https://doi.org/10.1130/G53617.1
- Organic carbon cycling in hemipelagic and turbidite sediments of Santa Monica Basin, California Borderland D. Burdige & T. Komada https://doi.org/10.1016/j.gca.2025.12.053
- Circulation and dispersal in California’s Borderland Basins J. McWilliams et al. https://doi.org/10.1016/j.pocean.2024.103349
- Iron “ore” nothing: benthic iron fluxes from the oxygen-deficient Santa Barbara Basin enhance phytoplankton productivity in surface waters D. Robinson et al. https://doi.org/10.5194/bg-21-773-2024
11 citations as recorded by crossref.
- Clumped isotopes of methane trace bioenergetics in the environment J. Liu et al. https://doi.org/10.1126/sciadv.adu1401
- Microbial mats in the Río Mayer Formation (Lower Cretaceous), Austral Basin, Argentina: Paleoenvironmental and paleoceanographic significance N. Carmona et al. https://doi.org/10.1111/sed.70070
- Shifts in prokaryotic communities and giant sulphur-oxidising bacteria in response to salmon aquaculture in sub-Antarctic marine sediments C. Aranda et al. https://doi.org/10.1016/j.marpolbul.2025.118694
- A niche for diverse cable bacteria in continental margin sediments overlain by oxygen-deficient waters C. Slomp et al. https://doi.org/10.5194/bg-22-4885-2025
- Contrasting microbial iron metabolism in sediments from oxic and hypoxic estuaries R. Du et al. https://doi.org/10.3389/fmicb.2026.1824768
- The fate of fixed nitrogen in Santa Barbara Basin sediments during seasonal anoxia X. Peng et al. https://doi.org/10.5194/bg-21-3041-2024
- Land-use change simplifies microbiome association networks despite limited diversity changes in river sandbar soils Z. Xiang et al. https://doi.org/10.1007/s11368-026-04311-y
- Chemosynthetic microbial communities formed wrinkle structures in ancient turbidites R. Martindale et al. https://doi.org/10.1130/G53617.1
- Organic carbon cycling in hemipelagic and turbidite sediments of Santa Monica Basin, California Borderland D. Burdige & T. Komada https://doi.org/10.1016/j.gca.2025.12.053
- Circulation and dispersal in California’s Borderland Basins J. McWilliams et al. https://doi.org/10.1016/j.pocean.2024.103349
- Iron “ore” nothing: benthic iron fluxes from the oxygen-deficient Santa Barbara Basin enhance phytoplankton productivity in surface waters D. Robinson et al. https://doi.org/10.5194/bg-21-773-2024
Saved (final revised paper)
Latest update: 24 Jul 2026
Short summary
Declining oxygen (O2) concentrations in coastal oceans can threaten people’s ways of life and food supplies. Here, we investigate how mats of bacteria that proliferate on the seafloor of the Santa Barbara Basin sustain and potentially worsen these O2 depletion events through their unique chemoautotrophic metabolism. Our study shows how changes in seafloor microbiology and geochemistry brought on by declining O2 concentrations can help these mats grow as well as how that growth affects the basin.
Declining oxygen (O2) concentrations in coastal oceans can threaten people’s ways of life and...
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