Microbial Communities Under Distinct Thermal and Geochemical Regimes in Axial and Off-Axis Sediments of Guaymas Basin

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  • Teske, A.
    • Affiliation: College of Arts and Sciences, Department of Marine Sciences
  • Wegener, G.
    • Other Affiliation: University of Bremen
  • Chanton, J.P.
    • Other Affiliation: Florida State University
  • White, D.
    • Affiliation: College of Arts and Sciences, Department of Marine Sciences
  • MacGregor, B.
    • Affiliation: College of Arts and Sciences, Department of Marine Sciences
  • Hoer, D.
    • Other Affiliation: United States Environmental Protection Agency
  • de Beer, D.
    • Other Affiliation: Max-Planck-Institute for Marine Microbiology
  • Zhuang, G.
    • Other Affiliation: Ocean University of China
  • Saxton, M.A.
    • Other Affiliation: University of Georgia
  • Joye, S.B.
    • Other Affiliation: University of Georgia
  • Lizarralde, D.
    • Other Affiliation: Woods Hole Oceanographic Institution
  • Soule, S.A.
    • Other Affiliation: Woods Hole Oceanographic Institution
  • Ruff, S.E.
    • Other Affiliation: The Josephine Bay Paul Center for Comparative Molecular Biology and Evolution
Abstract
  • Cold seeps and hydrothermal vents are seafloor habitats fueled by subsurface energy sources. Both habitat types coexist in Guaymas Basin in the Gulf of California, providing an opportunity to compare microbial communities with distinct physiologies adapted to different thermal regimes. Hydrothermally active sites in the southern Guaymas Basin axial valley, and cold seep sites at Octopus Mound, a carbonate mound with abundant methanotrophic cold seep fauna at the Central Seep location on the northern off-axis flanking regions, show consistent geochemical and microbial differences between hot, temperate, cold seep, and background sites. The changing microbial actors include autotrophic and heterotrophic bacterial and archaeal lineages that catalyze sulfur, nitrogen, and methane cycling, organic matter degradation, and hydrocarbon oxidation. Thermal, biogeochemical, and microbiological characteristics of the sampling locations indicate that sediment thermal regime and seep-derived or hydrothermal energy sources structure the microbial communities at the sediment surface.
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  • Article
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  • In Copyright
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  • Attribution 4.0 International
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  • Frontiers in Microbiology
Journal volume
  • 12
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  • English
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  • 1664-302X
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  • Frontiers Media S.A.

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