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dc.contributor.authorGardade, L.
dc.contributor.authorKhandeparker, L.
dc.date.accessioned2025-05-06
dc.date.accessioned2025-05-06T10:40:51Z
dc.date.available2024-08-21
dc.date.available2025-05-06T10:40:51Z
dc.date.issued2024
dc.identifier.citationMarine Ecology,Vol.45(4);2024;article no:e12807
dc.identifier.issn0173-9565
dc.identifier.urihttps://doi.org/10.1111/maec.12807
dc.identifier.urihttp://drs.nio.res.in/drs/handle/2264/9434
dc.descriptionIF2023=1.5
dc.description.abstractLaboratory microcosm experiments help to understand the degradation pattern of different sources derived from organic matter (OM) at the sediment?water interface and relate it to field processes. Microcosm experiments were carried out for 65?days to assess the degradation of organic materials such as diatoms, zooplankton, and mangrove leaves using source-specific fatty acid (FA) biomarkers. The viable bacterial population in the microcosm sediment was low on day 1, but on day 3, it increased substantially by two to threefold in all the treatments. An increase in the bacterial population resulted in a decrease in the FAs specific to organic materials during the initial incubation phase (10?days), suggesting the degradation of organic materials derived from different sources. The FAs specific to diatoms showed faster degradation when compared to zooplankton and mangrove-specific FAs. The degradation of FAs was influenced by the nature of the source material, unsaturation of FAs, and the sediment type. Sandy sediment facilitated higher degradation of diatom and zooplankton-specific FAs, whereas mangrove-specific FAs showed higher degradation in silty-clay sediment. Thus, bacterial community composition coupled with the habitat characteristics, the OM composition, and the grain size of the sediment, influenced the degradation of FAs. The degradation of mangrove-specific long-chain FAs was ~1.11?2.5 times higher when spiked with plankton-derived labile OM from mixed sources, which otherwise took a longer time for degradation pointing toward co-metabolism (priming effect), which could play a significant role in the cycling of terrestrial plant-derived OM in an estuarine ecosystem.
dc.languageen
dc.publisherWiley Online Library
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.titleEvaluation of fate of organic matter in sediment through microcosm experiments
dc.typeJournal Article
dc.affiliation.authorCSIR-National Institute of Oceanography, Dona Paula, Goa, India


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