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    Effect of oxygen minimum zone formation on communities of marine protists

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    Saanich_MS_RESUBMITTED_1_10_2012.pdf (2.571Mb)
    Date
    2012-01-10
    Author
    Orsi, William D.  Concept link
    Song, Young C.  Concept link
    Hallam, Steven J.  Concept link
    Edgcomb, Virginia P.  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/5358
    As published
    https://doi.org/10.1038/ismej.2012.7
    Keyword
     Protists; Diversity; Anoxic; Oxygen minimum zone; 18S rRNA approach 
    Abstract
    Changes in ocean temperature and circulation patterns compounded by human activities are leading to oxygen minimum zone expansion with concomitant alteration in nutrient and climate active trace gas cycling. Here, we report the response of microbial eukaryote populations to seasonal changes in water column oxygen-deficiency using Saanich Inlet, a seasonally anoxic fjord on the coast of Vancouver Island British Columbia, as a model ecosystem. We combine small subunit ribosomal RNA gene sequencing approaches with multivariate statistical methods to reveal shifts in operational taxonomic units during successive stages of seasonal stratification and renewal. A meta-analysis is used to identify common and unique patterns of community composition between Saanich Inlet and the anoxic/sulfidic Cariaco Basin (Venezuela) and Framvaren Fjord (Norway) to show shared and unique responses of microbial eukaryotes to oxygen and sulfide in these three environments. Our analyses also reveal temporal fluctuations in rare populations of microbial eukaryotes, particularly anaerobic ciliates, that may be of significant importance to the biogeochemical cycling of methane in oxygen minimum zones.
    Description
    Author Posting. © The Author(s), 2012. This is the author's version of the work. It is posted here by permission of Nature Publishing Group for personal use, not for redistribution. The definitive version was published in The ISME Journal 6 (2012): 1586–1601, doi:10.1038/ismej.2012.7.
    Collections
    • Geology and Geophysics (G&G)
    Suggested Citation
    Preprint: Orsi, William D., Song, Young C., Hallam, Steven J., Edgcomb, Virginia P., "Effect of oxygen minimum zone formation on communities of marine protists", 2012-01-10, https://doi.org/10.1038/ismej.2012.7, https://hdl.handle.net/1912/5358
     

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