Macrozooplankton biomass in the deep scattering layer of the Indian EEZ

Karuppasamy, P K and Balu, S and Persis, Vimala (2009) Macrozooplankton biomass in the deep scattering layer of the Indian EEZ. Journal of the Marine Biological Association of India, 51 (1). pp. 26-31.


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    The surveys conducted on board FORV Sagar Sampada during 1998-2002 on the Deep Scattering Layer (DSL) revealed a wide spectrum of macrozooplankton in the sonic layers of the oceanic and pelagic realms from surface to 750 m depth. The macrozooplankton biomass was 6.83 and 9.21 g/1000 m3 in the Arabian Sea and 2.14 and 2.61 g/1000 m3 in the Bay of Bengal, respectively, in the day and night hauls. Bathymetric studies showed that the plankton biomass was high at 0-50 m depth. Out of 19 groups of zooplankton from the Arabian Sea, medusae dominated the catch in day (35.6%) and night (31.4%) hauls. Out of 20 groups in the Bay of Bengal, medusae (36.8%) predominated in the day and euphausiids (32.0%) in the night. This paper shows the distribution and abundance of macrozooplankton along the various depths and seasons, including their diurnal vertical migration.

    Item Type: Article
    Uncontrolled Keywords: Deep scattering layer; macrozooplankton; biomass; diurnal vertical migration
    Subjects: Marine Biology > Zooplanktons
    Divisions: CMFRI-Kochi > Fishery Environment
    Subject Area > CMFRI Brochures > CMFRI-Kochi > Fishery Environment
    CMFRI-Kochi > Fishery Environment
    Depositing User: Dr. V Mohan
    Date Deposited: 10 Aug 2010 05:01
    Last Modified: 09 Sep 2015 15:15

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