Effect of monsoon on coastal fish diversity of Goa: an example from the gillnet fishery

Sreekanth, G B and Manju Lekshmi, N and Chakraborty, S K and Jaiswar, A K and Zacharia, P U and Vishnuradhan, Renjith and Singh, N P and George, Deepak and Pazhayamadom, George (2016) Effect of monsoon on coastal fish diversity of Goa: an example from the gillnet fishery. Indian Journal of Fisheries, 63 (2). pp. 8-18.

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    Abstract

    The dynamics of fauna in coastal ecosystems are influenced by seasonal patterns in the oceanographic environment. It is well known that the monsoon along south-west coast of India influences the movement and spawning of fishes. Thus, they have direct effect on the richness, abundance and evenness of fish diversity in the ecosystem. This study investigates how the monsoon affects the commercial gillnet fishery along the coast of Goa. Fishing experiments were conducted in popular gillnet fishing grounds and the temporal pattern in diversity indices between October 2013 and September 2014 was assessed. A total of 124 fish species (40 families), 16 crustacean species (4 families) and 9 molluscan species (8 families) were recorded. The species diversity was found to be significantly different during the monsoon season and the species abundance distribution followed a geometric series during this period indicating signs of ecosystem perturbations. The economic and biological aspects of gillnet fishing in relation to the monsoon season in Goa are also discussed.

    Item Type: Article
    Uncontrolled Keywords: Fish diversity, Goa, Monsoon, Species abundance
    Subjects: Marine Fisheries
    Divisions: CMFRI-Kochi > Marine Capture > Demersal Fisheries
    Subject Area > CMFRI > CMFRI-Kochi > Marine Capture > Demersal Fisheries
    CMFRI-Kochi > Marine Capture > Demersal Fisheries
    Subject Area > CMFRI-Kochi > Marine Capture > Demersal Fisheries
    Depositing User: Arun Surendran
    Date Deposited: 18 Jul 2016 06:46
    Last Modified: 03 Feb 2017 05:49
    URI: http://eprints.cmfri.org.in/id/eprint/10933

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