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

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Title Trophic structure and levels of selected metals in the zooplankton community of Thane-Bassein creek, Bombay
 
Creator Nair, Vijayalakshmi R
Krishnamurti, Asha Jyothi
Gajbhiye, S N
 
Description 173-183
Community
structure of zooplankton at 4 locations, 2 in the coastal waters off Bombay and 2 in interior
Thane-Bassein Creek System 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 2014-01-15T09:08:08Z
2014-01-15T09:08:08Z
1999-06
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://hdl.handle.net/123456789/25696
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.28(2) [June 1999]