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
David J. Yousavich,De'Marcus Robinson,Xuefeng Peng,Sebastian J. E. Krause,Frank Wenzhöfer,Felix Janssen,Na Liu,Jonathan Tarn,Franklin Kinnaman,David L. Valentine,and Tina Treude
Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, Math Science Building, 520 Portola Plaza, Los Angeles, CA 90095, USA
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
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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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...
