• 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.

    The influence of some hydrographical factors on the fisheries of Cochin area

    Thumbnail
    View/Open
    Bull_Natl_Inst_Sci_India_1968_38_846.pdf (389.3Kb)
    Date
    1968
    Author
    Sankaranarayanan, V.N.
    Qasim, S.Z.
    Metadata
    Show full item record
    Abstract
    From the seasonal changes in the hydrographical features of Cochin area during the year 1965-66, it is possible to deduce that a shore-ward influx of upwelled water occurs from about June to October The effect of this water is felt in very shallow areas During this period the bottom layers become cold, markedly saline, poorly oxygenated and rich in nutrients Minimum oxygen of less than 0.5 ml/L is recorded at 10 m in August The fish populations are not very abundant during this season and tend to avoid the oxygen-deficient water Both fish and prawn catches are poor from June to September The available evidences show that the enrichment of the euphotic zone with nutrients in the post-upwelling period produces an intense phytoplankton bloom The red-tide phenomenon which acts as a further threat to fish life is of common occurrence during this season From November onwards there is a reappearance of fish shoals in coastal waters and a resumption of large scale fishing activity
    URI
    http://drs.nio.org/drs/handle/2264/5990
    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