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Fresh water influence on nutrient stoichiometry in a tropical estuary, Southwest coast of India

DRS at CSIR-National Institute of Oceanography

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Title Fresh water influence on nutrient stoichiometry in a tropical estuary, Southwest coast of India
 
Creator Martin, G.D.
Vijay, J.G.
Laluraj, C.M.
Madhu, N.V.
Joseph, T.
Nair, M.
Gupta, G.V.M.
Balachandran, K.K.
 
Subject nutrient stoichiometry
Cochin backwaters
Southwest coast of India
anthropogenic activities
 
Description Cochin backwaters, a micro tidal estuary, undergo a characteristic transformation from a river dominated system during summer monsoon to a tide-dominant system during pre-monsoon season. The present study observes that as the river flow weakens after monsoon, the flushing of the estuary diminishes and the nitrogen and phosphorous loadings through anthropogenic activities (industries) and sediment re-suspension alter the nutrient stoichiometry substantially. The increased tidal activity during pre-monsoon changes the estuary into a vertically mixed, eutrophic and flow-restricted system supporting an enhanced organic production. This implies that monsoon-induced hydrology plays an important role in regulating the nutrients, secondary production and even the migrant fauna of the estuary. The system is delicately poised, as continuous release of pollutants including nutrients into this estuary would suppress fish and shellfish production, where only pollution tolerant species can exist.
 
Date 2008-03-28T06:55:58Z
2008-03-28T06:55:58Z
2008
 
Type Journal Article
 
Identifier Applied Ecology And Environmental Research, vol.6(1); 57-64p.
http://drs.nio.org/drs/handle/2264/1037
 
Language en
 
Rights An edited version of this paper was published by Elsevier. Copyright [2008] Penkala Bt.
 
Publisher Corvinus University of Budapest