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dc.contributor.authorNaik, V. V.
dc.contributor.authorDamare, S.R.
dc.contributor.authorShah, S.S.
dc.contributor.authorShenoy, D.M.
dc.contributor.authorMulla, A.B.
dc.date.accessioned2024-10-03
dc.date.accessioned2024-10-10T11:46:01Z
dc.date.available2024-05-13
dc.date.available2024-10-10T11:46:01Z
dc.date.issued2024
dc.identifier.citationFrontiers in Marine Science, vol.11; 2024; Article no: 1301955
dc.identifier.issn2296-7745
dc.identifier.otherhttps://www.frontiersin.org/journals/marine-science/articles/10.3389/fmars.2024.1301955/full
dc.identifier.urihttps://doi.org/10.3389/FMARS.2024.1301955
dc.identifier.urihttp://drs.nio.res.in/drs/handle/2264/9279
dc.descriptionIF2022= 3.7
dc.description.abstractThe formation of oxygen-depleted zones in the bottom waters is one of the most widespread phenomena in coastal areas. Upwelling episodes along India�s west coast due to the southwest monsoon increase biological productivity, further lowering the dissolved oxygen in the upwelled waters, which intensifies annually between June and October. Here, we have determined the changes in the microbial community in response to the varying oxygen levels and other physicochemical parameters at the Candolim Time Series Station using high-throughput sequencing. Amplicon Sequence Variants across all the samples collected in different seasons were mostly affiliated to the phyla Proteobacteria, Actinobacteria, Bacteroidetes, Verrucomicrobia, Chloroflexi, Firmicutes and Planctomycetes, with the most dominant being Proteobacteria (21-41%). Statistical analysis revealed that microbial diversity differed significantly with changing DO, ammonia, nitrate and nitrite concentrations during different seasons. The microbial community shift due to seasonal hypoxia results in the differential biogeochemical cycling of essential nutrients, with certain years seeing redox conditions up to sulphate reduction while certain years seeing only nitrogen loss. Future global warming scenarios will serve as a big challenge for understanding the role of microbial diversity and its implications in the cycling of natural elements.
dc.languageen
dc.publisherFrontiers Media SA
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.titleEffect of coastal hypoxia on bacterial diversity as elucidated through 16S rRNA amplicon sequencing
dc.typeJournal Article
dc.affiliation.authorCSIR-National Institute of Oceanography, Dona Paula, Goa, India


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