Source characterisation of Sedimentary organic matter in mangrove ecosystems of northern Kerala, India: Inferences from bulk characterisation and hydrocarbon biomarkers
DRS at CSIR-National Institute of Oceanography
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Title |
Source characterisation of Sedimentary organic matter in mangrove ecosystems of northern Kerala, India: Inferences from bulk characterisation and hydrocarbon biomarkers
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Creator |
Resmi, P.
Manju, M.N. Gireeshkumar, T.R. RatheeshKumar, C.S. Chandramohanakumar, N. |
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Subject |
GEOLOGY AND GEOPHYSICS
CHEMISTRY AND BIOGEOCHEMISTRY CHEMISTRY AND BIOGEOCHEMISTRY AQUATIC ECOLOGY, PRODUCTIVITY |
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Description |
Surface sediment samples from five mangrove ecosystems along the Kerala coast, north of Kochi were analysed for elemental ratios, stable isotopes of carbon and hydrocarbon biomarkers (n-alkanes, n-alkenes and hopanes) to assess the sources and early diagenesis of sedimentary organic matter. The elemental and isotopic ratios along with sedimentary chlorophyll a content, suggested substantial contribution of planktonic organic matter apart from mangrove/terrestrial derived organic matter. The sources of organic matter showed variability in relation with the geographical setting of mangrove systems as well as with seasons. The n-alkanes in mangrove sediments consist of organic matter derived from varying contributions of planktonic, bacterial and terrestrial sources. The distributional features of n-alkanes with low molecular weight (
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Date |
2016-07-12T07:13:27Z
2016-07-12T07:13:27Z 2016 |
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Type |
Journal Article
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Identifier |
Regional Studies in Marine Science, vol.7; 2016; 43-54
http://drs.nio.org/drs/handle/2264/5001 |
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Language |
en
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Rights |
An edited version of this paper was published by Elsevier. Copyright [2016] Elsevier
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Publisher |
Elsevier
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