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    Quantitative analyses of pollution-indicator and pathogenic bacteria in Mumbai waters from ballast water exchange perspective

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    Environ_Monit_Assess_104_295.pdf (519.5Kb)
    Date
    2005
    Author
    Ramaiah, N.
    Kolhe, V.
    Sadhasivan, A.
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    Abstract
    As large numbers of ships either take in ballast from or discharge their ballast into the Mumbai Harbor region, it is pertinent to quantify microorganisms of health concerns and suggest on the suitability of water for ballasting purposes To meet with this main aim, a selected set of general and pathogenic bacterial groups and their seasonal variations were studied from the Mumbai Harbor area Sampling was carried out during postmonsoon (November 2001), pre-monsoon (April 2002) and monsoon (October 2002) periods We quantified total coliforms and eight other groups of known human pathogenic bacteria from water, sediment, marine plant and animal samples collected in and around Mumbai Harbor When compared with similar studies from other parts/harbors of the world, the Mumbai Harbor area has over 100-times higher levels of coliforms The serotypes of Escherichia coli O157 and Shigella-Alkaligens Dispar group were abundant throughout the year Even Vibrio cholerae, V parahaemolyticus, Salmonella spp., campylobacters and aeromonads were present in large numbers This comprehensive study, conducted with a view to quantify these bacterial groups and to evaluate the suitability of these waters for ballasting purposes, clearly suggests that both ballasting and deballasting be avoided in this region and alternative procedures should be developed for treating/handling ballast water.
    URI
    http://drs.nio.org/drs/handle/2264/7574
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