• 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.

    Differential environmental responses of tropical phytoplankton community in the southwest coast of India

    Thumbnail
    Date
    2017
    Author
    Madhu, N.V.
    Martin, G.D.
    Haridevi, C.K.
    Nair, M.
    Balachandran, K.K.
    Ullas, N.
    Metadata
    Show full item record
    Abstract
    Phytoplankton characteristics (biomass, primary productivity, species composition and community structure) were studied in a tropical estuary (Cochin estuary) and adjacent coastal marine region for understanding the factors controlling their productivity patterns and community dynamics. The Cochin estuary (CE) sustained a high level of inorganic nutrients supporting very high phytoplankton biomass, productivity, and abundance. Though the CE exhibited a 2-3 fold increase in the annual mean of chlorophyll a (14.6�8.5mgm?3) and primary production (1288�999mgCm?3d?1) than the coastal waters, both regions sustained a substantial dominance of small-sized phytoplankton, in particular nanoplankton (2-20�?m), which apparently contributed >70% of total chlorophyll a and primary production. Diatoms were the dominant phytoplankton functional group (>75% of total abundance) prevailed over both sampling locations almost throughout the year. However, the sporadic dominance of certain species of dinoflagellates (during premonsoon) and green and blue-green algae (during monsoon) were also encountered in the estuary. The SIMPER analysis, based on phytoplankton species abundance data, revealed the presence of certain characterizing species exclusive for both estuary and coastal waters, and most of them belonged to smaller diatoms e.g., Skeletonema costatum, Thalassiosira subtilis, Nitzschia longissima, Cylindrotheca closterium etc. The incessant proliferation of these small sized diatoms, especially in the CE, can be considered as a potential source of consistently higher phytoplankton biomass and primary productivity, and which can even survive in the recurring short-term (tides) and long-term (seasonal) hydrographic changes of the Cochin estuary.
    URI
    https://doi.org/10.1016/J.RSMA.2017.07.004
    http://drs.nio.org/drs/handle/2264/7771
    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