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dc.contributor.authorResmi, P.
dc.contributor.authorGireeshkumar, T.R.
dc.contributor.authorRatheeshKumar, C.S.
dc.contributor.authorUdayakrishnan, P.B.
dc.contributor.authorChandramohanakumar, N.
dc.date.accessioned2023-12-11
dc.date.accessioned2023-12-11T04:44:37Z
dc.date.available2023-11-30
dc.date.available2023-12-11T04:44:37Z
dc.date.issued2023
dc.identifier.citationEnvironmental Forensics, vol.24(5-6); 2023; 183-196
dc.identifier.issn1527-5930
dc.identifier.otherhttps://www.tandfonline.com/doi/abs/10.1080/15275922.2021.2006368
dc.identifier.urihttps://doi.org/10.1080/15275922.2021.2006368
dc.identifier.urihttp://drs.nio.res.in/drs/handle/2264/9156
dc.descriptionIF(JCR2023) = 1.8
dc.description.abstractFatty acids and bulk geochemical proxies were employed to understand the sources and transformation of sedimentary organic matter from surface sediments of major five mangrove systems in the northern Kerala coast. Texture, tidal rhythm and the proximity to the south eastern Arabian Sea were the main factors influencing distribution and accumulation of the organic matter in these systems. A total of 118 fatty acids were quantified and grouped into short-chain (SCFA), long-chain (LCFA), monounsaturated (MUFA), polyunsaturated (PUFA) and branched-chain (BrFA) fatty acids, hydroxy fatty acids, cyclic fatty acids, and dicarboxylic acids. The distribution of fatty acid groups was in the order SCFA > BrFA > MUFA > LCFA > PUFA. Total fatty acids (TFA) concentration exhibited profound seasonal variations and ranged from 6.25 to 580.49 μg/g (pre-monsoon > post-monsoon > monsoon except in Kadalundi which follows the reverse order). The sedimentary fatty acids in the study region reveal a wide spectrum of inputs from terrestrial, planktonic (preponderance of diatom followed by dinoflagellates along with brown algae, cyanobacteria, red algae) and bacterial sources (e.g., Desulfobulbus-type bacteria, sulfur-reducing bacteria, Sulfur-oxidizing bacteria). Significant concentrations of bacterial fatty acids suggest the functioning of an effective microbial loop and various biogeochemical pathways operating in these sediments (sulfate reduction, iron and manganese oxide reduction, etc.)
dc.languageen
dc.publisherTaylor & Francis
dc.relation.isreferencedbySCI
dc.rightsOnly the author version of the copright reserved papers uploaded. Contact drs@nio.org for any complaints regarding copyright violations
dc.titleDistribution and sources of fatty acids in surface sediments of mangrove ecosystems in the Northern Kerala Coast, India
dc.typeJournal Article
dc.affiliation.authorDepartment of Chemical Oceanography, School of Marine Science, Cochin University of Science and Technology, Kochi, Kerala, India


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