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Trace Metal Concentrations in Zooplankton from the Eastern Arabian Sea and Western Bay of Bengal

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Relation http://eprints.cmfri.org.in/9901/
 
Title Trace Metal Concentrations in Zooplankton from the
Eastern Arabian Sea and Western Bay of Bengal
 
Creator Rejomon, G
Balachandran, K K
Nair, M
Joseph, T
Dinesh Kumar, P K
Achuthankutty, C T
Nair, K K C
Pillai, N G K
 
Subject Zooplanktons
Marine Pollution
 
Description Trace metal contents in zooplankton samples were estimated as a part of the Marine Research–Living Resource program at 24 stations
in the Bay of Bengal (November, 2002) and 29 stations in the Arabian Sea (September–October, 2003) during the Cruises 209 and 217
of the Fishery and Oceanographic Research Vessel Sagar Sampada. The average metal concentrations in the Bay of Bengal zooplankton
(Fe, 14,073 µg g−1; Co, 24.2 µg g−1; Ni, 29.5 µg g−1; Cu, 46.2 µg g−1; Zn, 2000 µg g−1; Cd, 18.7 µg g−1; and Pb, 6.55 µg g−1) were
found to be higher of comparable magnitudes than the Arabian Sea zooplankton (Fe, 1786 µg g−1; Co, 14.2 µg g−1; Ni, 18.6 µg g−1;
Cu, 21.5 µg g−1; Zn, 374 µg g−1; Cd, 16.5 µg g−1; and Pb, 4.0 µg g−1). The spatial variability of metal contents in zooplankton from
both basins indicates that it is markedly enriched in coastal samples than offshore samples. The metal enrichment in zooplankton from
the coastal areas of the eastern Arabian Sea occurs due to a combined effect of upwelling, riverine, and anthropogenic sources, whereas
the latter two are only dominating in the coastal Bay of Bengal zooplankton. A comparison of average trace metal concentrations
in the zooplankton from the Arabian Sea and Bay of Bengal showed that the enrichment of Fe, Zn, Cd, Ni, Cu, and Pb in the Bay of
Bengal zooplankton may be due to high bioaccumulation factor of these elements, whereas the slight Co enrichment may be due to the
bioavailability of this metal in the seawater.
 
Date 2008
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/9901/1/Environmental_Forensics_NGK_Pillai.pdf
Rejomon, G and Balachandran, K K and Nair, M and Joseph, T and Dinesh Kumar, P K and Achuthankutty, C T and Nair, K K C and Pillai, N G K (2008) Trace Metal Concentrations in Zooplankton from the Eastern Arabian Sea and Western Bay of Bengal. Environmental Forencics, 9 (1). pp. 22-32.