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dc.contributor.authorDias, A.
dc.contributor.authorKurian, S.
dc.contributor.authorSuresh, T.
dc.contributor.authorPratihary, A.K.
dc.date.accessioned2021-06-16
dc.date.accessioned2021-06-22T10:09:07Z
dc.date.available2021-05-20
dc.date.available2021-06-22T10:09:07Z
dc.date.issued2021
dc.identifier.citationFrontiers in Marine Science, vol.8; 2021; Article no: 638583
dc.identifier.issn2296-7745
dc.identifier.otherhttps://www.frontiersin.org/articles/10.3389/fmars.2021.638583/full
dc.identifier.urihttps://doi.org/10.3389/fmars.2021.638583
dc.identifier.urihttps://drs-beta.nio.org/drs/handle/2264/8680
dc.descriptionIF2019 - 3.661
dc.description.abstractColored dissolved organic matter (CDOM) is one of the important fractions of dissolved organic matter (DOM) that controls the availability of light in water and plays a crucial role in the cycling of carbon. High CDOM absorption in the Mandovi Estuary (Goa) during spring inter-monsoon (SIM) is largely driven by both in-situ production and anthropogenic activities. Here we have presented the CDOM variation in the estuary during SIM of 2014-2018 and compared it with that of 2020 when the COVID-19 outbreak imposed lockdown was implemented. During 2020, low CDOM absorption was observed at the mid-stream of the estuary as compared to the previous years, which could be attributed to low autochthonous production and less input from anthropogenic activities. On the other hand, high CDOM observed at the mouth during 2020 is linked to autochthonous production, as seen from the high concentrations of chlorophyll a. High CDOM in the upstream region could be due to both autochthonous production and terrestrially derived organic matter. Sentinel-2 satellite data was also used to look at the variations of CDOM in the study region which is consistent with in-situ observations. Apart from this, the concentration of nutrients (NO 3 - , NH 4 + , and SiO 4 4- ) in 2020 was also low compared to the previous reports. Hence, our study clearly showed the impact of anthropogenic activities on CDOM build-up and nutrients, as the COVID-19 imposed lockdown drastically controlled such activities in the estuary.
dc.languageen
dc.publisherFrontiers
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.titleVariations of Colored Dissolved Organic Matter in the Mandovi Estuary, Goa, During Spring Inter-Monsoon: A Comparison With COVID-19 Outbreak Imposed Lockdown Period
dc.typeJournal Article
dc.affiliation.authorCSIR-National Institute of Oceanography, Dona Paula, Goa, India


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