Organic Production of Koromjol, Passur River System of the Sundarbans, Bangladesh

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Abstract

A study on organic production of Koromjol, Passur River System of the Sundarbans was conducted from September 2008 to May 2009. The present study deals with organic production, phytoplankton abundance and nutrients of Koromjol in our sampling station, Koromjol, the values of gross and net primary production were ranged from 18 to 146 and 15 to 86 mgC/m3/L respectively where maximum were recorded during winter and minimum at rainy season. Supporting biomass and phytoplankton abundance were also given highest values at winter and lowest during rainy season which makes the seasonal variation very signiﬁcant. Phytoplankton taxa belonging to some major classes, i.e. Cephaladonia sp., Coscinodiscus sp., Oscillatoria sp. and Melosira
sp. were identiﬁed. The ojectives of this study are to determine the organic production, phytoplankton abundance and chlorophyll-a with the nutrients of the Passur river.

Keywords

Organic production

phytoplankton abundance

chlorophyll

nutrients

Conflict of interest

The authors declare they have no competing interests.

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Asian Journal of Water, Environment and Pollution, Electronic ISSN: 1875-8568 Print ISSN: 0972-9860, Published by AccScience Publishing