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Autotrophic and heterotrophic characteristics in a polluted tropical estuarine complex

DRS at CSIR-National Institute of Oceanography

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Title Autotrophic and heterotrophic characteristics in a polluted tropical estuarine complex
 
Creator Ramaiah, Neelam
Ramaiah, N.
Chandramohan, D.
Nair, V.R.
 
Subject heterotrophic organisms
autotrophy
primary production
estuaries
pollution effects
phytoplankton
eutrophication
genetic diversity
microbiological analysis
microbial contamination
tropical environment
 
Description Some species of microbial heterotrophic communities (14C glucose uptake and respiration; viable nad total bacterial numbers) and autotrophic communities (primary production rate, chlorophyll a, phytoplankton cell counts and generic diversity) were studied from Bombay harbour-Thana creek-Bassein creek confluence. Extremely low microbial heterotrophic activity observed from the polluted zones of this confluence directly implied signs of environmental deterioration. Besides suggesting eutrophication, higher concentrations of chlorophyll a and primary production in the locations receiving industrial waste were also important as indicators of resistant phytoplankton communities. Low generic diversity indices and low rates of 14C glucose uptake by the natural microbial assemblages from the interior locations suggest a general deterioration of the biological processes. Results of this study highlight the deviation from the classical stimulation of heterotrophic activity previously reported for several eutrophic estuaries
 
Date 2009-01-25T05:54:38Z
2009-01-25T05:54:38Z
1995
 
Type Journal Article
 
Identifier Estuarine, Coastal and Shelf Science, Vol.40; 45-55p.
http://drs.nio.org/drs/handle/2264/2325
 
Language en
 
Rights Copyright [1995]. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.
 
Publisher Academic Press