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Foraminifera in surface sediments of Mandovi River Estuary: Indicators for mining pollution and high sea stand in Goa, India

DRS at CSIR-National Institute of Oceanography

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Title Foraminifera in surface sediments of Mandovi River Estuary: Indicators for mining pollution and high sea stand in Goa, India
 
Creator Nigam, R.
Panchang, R.
Banerjee, P.
 
Subject foraminifera
pollution effects
pollution indicators
palaeo studies
sediment samples
suspended load
holocene
mining
 
Description Foraminiferal characteristics of 11 surface sediment samples collected from the Mandovi estuary during 2001 have been compared with similar data based on samples collected during 1994. The study reveals drastic fall in total foraminiferal number in the lower reaches of the Mandovi River estuary, from 138/g dry sediment sample in 1994 to 41/g sediment sample in 2001. The decline is also noted in diversity from 22 in 1994 to only 5 species in 2001. The ever-increasing suspended load in Mandovi estuary, probably due to mining activities in the catchment area of the Mandovi River estuary, is suggested as the plausible reason for the decline of fauna. An intriguing finding of the present study is the presence of substantial amount of reworked/older specimens, at the lower reaches of the estuary, that could be indicators of Holocene high sea stand.
 
Date 2008-02-22T05:30:13Z
2008-02-22T05:30:13Z
2005
 
Type Journal Article
 
Identifier Journal of coastal research, Vol.21; 853-859p.
http://drs.nio.org/drs/handle/2264/948
 
Language en
 
Rights Copyright [2005]. It is tried to respect the rights of the copyright holders to the best of the knowledge. If it is brought to our notice by copyright holder that the rights are voilated then the item would be withdrawn.
 
Publisher Coastal Education and Research Foundation