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Trophic structure and levels of selected metals in the zooplankton community of Thane-Bassein Creek, Bombay

DRS at CSIR-National Institute of Oceanography

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Title Trophic structure and levels of selected metals in the zooplankton community of Thane-Bassein Creek, Bombay
 
Creator Nair, V.R.
Krishnamurti, A.J.
Gajbhiye, S.N.
 
Subject zooplankton
trophic structure
trophic levels
herbivores
carnivores
population density
waste disposal sites
heavy metals
bioaccumulation
 
Description Community structure of zooplankton at 4 locations, 2 in the coastal waters off Bombay and 2 in interior Thane-Bassein Creek System, Maharashtra, India were studied for a period of one year. Copepods as the major herbivore community contributed 76-83% to total zooplankton population. Decapods were relatively more in the outer (av. 11%) as compared to interior zone (av. 7%). Population density of carnivores were 2-4 times more in the polluted interior segment. Among the different metals studied Cu and Zn contributed 60-89% of the total elements accumulated. In general, concentration of Zn was higher than Cu in different groups. Also levels of Zn in polluted locations were 2 times higher than the outer zone. The maximum concentrations of metals was observed in gelatinous organisms which included a variety of carnivores. Metal concentration in copepods was lower than carnivores. The lowest concentrations of metals in decapods could be due to the effective elimination of a part of the concentrated metal through periodic moulting.
 
Date 2009-01-10T11:49:35Z
2009-01-10T11:49:35Z
1999
 
Type Journal Article
 
Identifier Indian Journal of Marine Sciences, Vol.28; 173-183p.
http://drs.nio.org/drs/handle/2264/1834
 
Language en
 
Rights Copyright [1999]. 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 Council of Scientific and Industrial Research, New Delhi