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Intra-annual variability of carbon and nitrogen stable isotopes in suspended organic matter in waters of the western continental shelf of India

DRS at CSIR-National Institute of Oceanography

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Title Intra-annual variability of carbon and nitrogen stable isotopes in suspended organic matter in waters of the western continental shelf of India
 
Creator Maya, M.V.
Karapurkar, S.G.
Naik, H.
Roy, R.
Shenoy, D.M.
Naqvi, S.W.A.
 
Subject carbon isotopes
nitrogen isotopes
suspended organic matter
continental shelves
 
Description Intra-annual variations of delta sup(13)C and delta sup(15)N of watercolumn suspended particulate organic matter (SPOM) have been investigated to understand the biogeochemical cycling of C and N in the Western Continental Shelf of India (WCSI). The key issues being addressed are: how the delta sup(15)N of SPOM is affected by seasonally varying processes of organic matter production and respiration and how it relates to the delta sup(15)N of sedimentary organic matter that appears to show a decreasing trend despite an apparent intensification of seasonal oxygen deficiency over the past few decades? A secondary objective was to evaluate the sources of organic carbon. Elemental carbon and nitrogen concentrations, C/N ratios in SPOM, along with ancillary chemical and biological variables including phytoplankton pigment abundance were also determined on a seasonal basis (from March 2007 to September 2008), with the partial exception of the southwest (SW) monsoon period.
 
Date 2011-12-08T07:37:26Z
2011-12-08T07:37:26Z
2011
 
Type Journal Article
 
Identifier Biogeosciences, vol.8; 2011; 3441-3456
no
http://drs.nio.org/drs/handle/2264/3969
 
Language en
 
Relation Biogeosciences_8_3441.png
 
Rights © Author(s) 2011. CC Attribution 3.0 License.
 
Publisher The European Geosciences Union