• Login
    View Item 
    •   DSpace Home
    • Institute's contributions
    • Scholarly literature
    • View Item
    •   DSpace Home
    • Institute's contributions
    • Scholarly literature
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Significance of metabolically active bacterioplankton in the frontal regions of the Northeastern Arabian Sea

    Thumbnail
    View/Open
    Aquatic_Sci_80_38.pdf (909.9Kb)
    Date
    2018
    Author
    Khandeparker, L.
    Eswaran, R.
    Hede, N.
    Anil, A.C.
    Metadata
    Show full item record
    Abstract
    The Northeastern Arabian Sea (NEAS) experiences convective mixing during winter monsoon, which facilitates nutrient enrichment in the surface layers. This region is also known to harbour several sea surface temperature (SST) fronts and filaments, hotspots of primary production and bacterioplankton activity, which play an important role in the microbial loop. Observations on bacterioplankton with an emphasis on their physiological state, i.e., metabolically active (HNA; high nucleic acid content) bacteria and metabolically inactive (LNA; low nucleic acid content) bacteria were carried out in the NEAS region during early and peak winter monsoon (EWM and PWM). HNA bacteria were dominant in frontal zones coupled with high bacterial production (BP) indicating their significant role, whereas, LNA bacteria were abundant in non-frontal regions irrespective of the seasons. The differentiation in bacterial metabolic types points out organic matter enrichment in the fronts. During PWM, the nutrient concentration increased resulting in a further increase in HNA bacteria and BP in frontal regions. The transparent exopolysaccharides (TEP) were also higher in frontal zones, and inversely related to total bacterial abundance indicating a fast turnover of the organic matter. The age of the front and background condition prior to the formation of the front influences the relative contribution by bacterioplankton food web dynamics and these attributes would probably also help predict bacterial activities
    URI
    https://doi.org/10.1007/s00027-018-0590-3
    http://drs.nio.org/drs/handle/2264/7996
    Collections
    • Scholarly literature [9074]

    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback
    Theme by 
    Atmire NV
     

     

    Browse

    All of DSpaceCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

    My Account

    LoginRegister

    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback
    Theme by 
    Atmire NV