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    Seasonality in molecular and cytometric diversity of marine bacterioplankton: the reshuffling of bacterial taxa by vertical mixing

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    Type
    Article
    Authors
    García, Francisca C.
    Alonso-Sáez, Laura
    Moran, Xose Anxelu G. cc
    López-Urrutia, Ángel
    KAUST Department
    Red Sea Research Center (RSRC)
    Biological and Environmental Sciences and Engineering (BESE) Division
    Date
    2015-07-17
    Permanent link to this record
    http://hdl.handle.net/10754/561069
    
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    Abstract
    The ’cytometric diversity’ of phytoplankton communities has been studied based on single-cell properties, but the applicability of this method to characterize bacterioplankton has been unexplored. Here, we analysed seasonal changes in cytometric diversity of marine bacterioplankton along a decadal time-series at three coastal stations in the Southern Bay of Biscay. Shannon-Weaver diversity estimates and Bray-Curtis similarities obtained by cytometric and molecular (16S rRNA tag sequencing) methods were significantly correlated in samples from a 3.5-year monthly time-series. Both methods showed a consistent cyclical pattern in the diversity of surface bacterial communities with maximal values in winter. The analysis of the highly resolved flow cytometry time-series across the vertical profile showed that water column mixing was a key factor explaining the seasonal changes in bacterial composition and the winter increase in bacterial diversity in coastal surface waters. Due to its low cost and short processing time as compared to genetic methods, the cytometric diversity approach represents a useful complementary tool in the macroecology of aquatic microbes.
    Citation
    Seasonality in molecular and cytometric diversity of marine bacterioplankton: the reshuffling of bacterial taxa by vertical mixing 2015:n/a Environmental Microbiology
    Publisher
    Wiley-Blackwell
    Journal
    Environmental Microbiology
    ISSN
    14622912
    DOI
    10.1111/1462-2920.12984
    PubMed ID
    26189717
    Additional Links
    http://doi.wiley.com/10.1111/1462-2920.12984
    ae974a485f413a2113503eed53cd6c53
    10.1111/1462-2920.12984
    Scopus Count
    Collections
    Articles; Biological and Environmental Sciences and Engineering (BESE) Division; Red Sea Research Center (RSRC); Plankton Genomics, part of the Global Ocean Genome Project

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