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Late Holocene changes in hypoxia off the west coast of India: Micropalaeontological evidences

DRS at CSIR-National Institute of Oceanography

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Title Late Holocene changes in hypoxia off the west coast of India: Micropalaeontological evidences
 
Creator Nigam, R.
Prasad, V.
Mazumder, A.
Garg, R.
Saraswat, R.
Henriques, P.J.
 
Subject benthic foraminifera
west coast of India
organic matter
hypoxia
 
Description A study has been carried out to understand benthic foraminiferal and sedimentary organic matter characteristics under low dissolved oxygen conditions off the central west coast of India. Based on the strong correlation between the present-day abundance of rectilinear
bi- and triserial benthic foraminifera (RBF) and low dissolved oxygen conditions in the northeastern Arabian Sea, the geologic extent of low oxygen zone off the central west coast of India, is inferred from a core collected from the shallow water region. Persistently high relative abundance of RBF, large proportion
of amorphous organic matter and protoperidinioid dinocysts throughout the time-span covered by the core that goes well beyond the beginning of human intervention, indicate that the eutrophication of coastal water and subsequent development of low dissolved oxygen conditions is a natural phenomenon that has been in existence even before anthropogenic influence
 
Date 2009-03-31T09:44:46Z
2009-03-31T09:44:46Z
2009
 
Type Journal Article
 
Identifier Current Science, vol.96(5); 708-713
http://drs.nio.org/drs/handle/2264/2610
 
Language en
 
Publisher Current Science Association