Distribution and species diversity of phytoplankton in the inshore waters of Tuticorin in relation to the physicochemical variables

Asha, P S and Ranjith, L and Diwakar, K and Prema, D and Krishnakumar, P K (2018) Distribution and species diversity of phytoplankton in the inshore waters of Tuticorin in relation to the physicochemical variables. Journal of the Marine Biological Association of India, 60 (1). pp. 77-85.

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    Abstract

    A study was conducted to evaluate the phytoplankton community structure and its relationship with selected physicochemical variables in the inshore waters of Tuticorin during January to December 2008. Water and plankton samples from the surface waters at two depths (5m and 10m) were collected on board the research vessel Cadalmin-IV. Standard methods were followed for phytoplankton identification, enumeration and estimation of physicochemical variables. The present study recorded 69 species of phytoplankton with 85.5% dominance of diatoms followed by 14.5% of dinoflagellates. The overall density of phytoplankton was comparatively higher at 10 m with a mean of 2.14x104 ±0.4x104 cells L-1 and 3.37x104 ±0.9x104 cells L-1 at 5 m and 10 m depth respectively. The analysis indicated that 10 m depth, especially during the monsoon season, is rich in diversity of algal species than at the same depth during post-monsoon. It is confirmed that the population density of phytoplankton is more influenced by seasonal fluctuation of the physicochemical variables especially due to the effect of northeast monsoon in the inshore waters of Tuticorin.

    Item Type: Article
    Uncontrolled Keywords: Phytoplankton, physicochemical variables, inshore waters, northeast monsoon
    Subjects: Marine Environment
    Divisions: CMFRI-Tuticorin
    Depositing User: Arun Surendran
    Date Deposited: 03 Dec 2018 09:42
    Last Modified: 03 Dec 2018 09:42
    URI: http://eprints.cmfri.org.in/id/eprint/13251

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