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    Ecology of phytoplankton from Dharmatar Creek, west coast of India

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    Indian_J_Mar_Sci_27_302.pdf (712.4Kb)
    Date
    1998
    Author
    Tiwari, L.R.
    Nair, V.R.
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    Abstract
    Phytoplankton pigment, cell count and species diversity wee studied at five locations in Dharamtar Creek during September 1984 to November 1985. Chemical parameters indicated a healthy system free of any environmental stress. The water was vertically mixed except during the monsoon period and nutrients never became a limiting factore for phytoplankton production. Concentration of chlorophyll a and phaeophytin were fairly high, (av. 1.94 and 1.89 mg m sup(-3) respectively). A total of 58 general of phytoplankton comprising 46 diatoms, 6 dinoflagellates and 6 other algae were recorded from the area. Thalassiosira dominated the phytoplankton community. In the interior part of the creek blooms of Skeletonema and Peridinium were respectively observed during October-November and December. Correlation between chlorophyll a and cell count was significant while there was no correlation between phytoplankton and different physico-chemical parameters. Margalefs diversity index D varied from 1.14 to 4.93 with higher diversity towards the outer than the interior zone. In general the creek sustained a rich and diverse phytoplankton community.
    URI
    http://drs.nio.org/drs/handle/2264/1877
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