Oxygen minimum zone cryptic sulfur cycling sustained by offshore transport of 
key sulfur oxidizing bacteria

Callbeck, Cameron M.; Lavik, Gaute; Ferdelman, Timothy G.; Fuchs, Bernhard M.; Gruber-Vodicka, Harald R.; Hach, Philipp F.; Littmann, Sten; Schoffelen, Niels Josephe; Kalvelage, Tim; Thomsen, Soeren; Schunck, Harald; Loescher, Carolin R.; Schmitz, Ruth A.; Kuypers, Marcel M.M.

doi:10.1038/s41467-018-04041-x

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Oxygen minimum zone cryptic sulfur cycling sustained by offshore transport of key sulfur oxidizing bacteria

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Callbeck, Cameron M.
Department of Biogeochemistry, Max Planck Institute for Marine Microbiology, Max Planck Society;

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Lavik, Gaute
Department of Biogeochemistry, Max Planck Institute for Marine Microbiology, Max Planck Society;

/persons/resource/persons210363

Ferdelman, Timothy G.
Department of Biogeochemistry, Max Planck Institute for Marine Microbiology, Max Planck Society;

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Fuchs, Bernhard M.
Department of Molecular Ecology, Max Planck Institute for Marine Microbiology, Max Planck Society;

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Gruber-Vodicka, Harald R.
Department of Symbiosis, Max Planck Institute for Marine Microbiology, Max Planck Society;

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Hach, Philipp F.
Department of Biogeochemistry, Max Planck Institute for Marine Microbiology, Max Planck Society;

/persons/resource/persons210578

Littmann, Sten
Department of Biogeochemistry, Max Planck Institute for Marine Microbiology, Max Planck Society;

/persons/resource/persons210756

Schoffelen, Niels Josephe
Department of Biogeochemistry, Max Planck Institute for Marine Microbiology, Max Planck Society;

/persons/resource/persons210495

Kalvelage, Tim
Department of Biogeochemistry, Max Planck Institute for Marine Microbiology, Max Planck Society;

/persons/resource/persons210556

Kuypers, Marcel M.M.
Department of Biogeochemistry, Max Planck Institute for Marine Microbiology, Max Planck Society;

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Citation

Callbeck, C. M., Lavik, G., Ferdelman, T. G., Fuchs, B. M., Gruber-Vodicka, H. R., Hach, P. F., et al. (2018). Oxygen minimum zone cryptic sulfur cycling sustained by offshore transport of key sulfur oxidizing bacteria. NATURE COMMUNICATIONS, 9: 1729. doi:10.1038/s41467-018-04041-x.

Cite as: https://hdl.handle.net/21.11116/0000-0003-B7C5-0

Abstract

Members of the gammaproteobacterial clade SUP05 couple water column sulfide oxidation to nitrate reduction in sulfidic oxygen minimum zones (OMZs). Their abundance in offshore OMZ waters devoid of detectable sulfide has led to the suggestion that local sulfate reduction fuels SUP05-mediated sulfide oxidation in a so-called "cryptic sulfur cycle". We examined the distribution and metabolic capacity of SUP05 in Peru Upwelling waters, using a combination of oceanographic, molecular, biogeochemical and single-cell techniques. A single SUP05 species, (U)Thioglobus perditus, was found to be abundant and active in both sulfidic shelf and sulfide-free offshore OMZ waters. Our combined data indicated that mesoscale eddy-driven transport led to the dispersal of T-U. perditus and elemental sulfur from the sulfidic shelf waters into the offshore OMZ region. This offshore transport of shelf waters provides an alternative explanation for the abundance and activity of sulfide-oxidizing denitrifying bacteria in sulfide-poor offshore OMZ waters.