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dc.contributor.authorTorregroza-Espinosa, Ana Carolinaspa
dc.contributor.authorRestrepo, Juan Camilospa
dc.contributor.authorEscobar, Jaimespa
dc.contributor.authorBrenner, Markspa
dc.contributor.authorNewton, Alicespa
dc.date.accessioned2020-08-12T15:37:13Z
dc.date.available2020-08-12T15:37:13Z
dc.date.issued2020
dc.identifier.urihttps://hdl.handle.net/11323/6911spa
dc.description.abstractNutrient inputs and biogeochemical cycles in estuaries are strongly influenced by river discharge and suspended particulate matter (SPM). We evaluated temporal differences in nutrient bioavailability and net ecosystem productivity (NEP) and analyzed the effect of SPM on nutrient availability and estuary NEP in the mouth of the Magdalena River, Colombia. In this study, we used the stratified Muddy LOICZ model. Calculated water residence times in the estuary were low (~0.9–2.1 days), as were proportions of dissolved nitrogen (DIN) and phosphorus (DIP) forms (~10–30%) in the total nutrient pool. Dissolved nutrient proportions displayed differences between seasons (transition period [June 2018] and wet [November 2018]), and between the upper and lower, density-stratified water layers. Nutrient adsorption and desorption, associated with SPM in the estuary, determined bioavailable nutrient concentrations. When SPM was incorporated in the Muddy LOICZ model, the output indicated that NEP in the estuary was positive, i.e. gross primary productivity exceeded community respiration (autotrophic), and that there was net retention of nitrogen and phosphorus in the estuary. Primary producers in the autotrophic ecosystem fix sufficient carbon to supply higher trophic levels. Prevalence of fine sediment with high organic matter (OM) content in the Magdalena River, along with turbulence that results in vertical water column mixing, suggest conditions conducive to flocculation. This investigation highlights the importance of the Magdalena River mouth in the transport and processing of sediments and nutrients being discharged to the Caribbean Sea.spa
dc.language.isoeng
dc.publisherCorporación Universidad de la Costaspa
dc.rightsCC0 1.0 Universalspa
dc.rights.urihttp://creativecommons.org/publicdomain/zero/1.0/spa
dc.sourceEstuarine, Coastal and Shelf Sciencespa
dc.subjectNutrientsspa
dc.subjectSuspended particulate matter (SPM)spa
dc.subjectStratified estuaryspa
dc.subjectPartition (distribution) coefficientspa
dc.subjectNet ecosystem productivity (NEP)spa
dc.subjectMuddy LOICZ modelspa
dc.titleNutrient inputs and net ecosystem productivity in the mouth of the Magdalena River, Colombiaspa
dc.typeArtículo de revistaspa
dc.source.urlhttps://www.sciencedirect.com/science/article/abs/pii/S0272771420300664spa
dc.rights.accessrightsinfo:eu-repo/semantics/openAccessspa
dc.identifier.doihttps://doi.org/10.1016/j.ecss.2020.106899spa
dc.identifier.instnameCorporación Universidad de la Costaspa
dc.identifier.reponameREDICUC - Repositorio CUCspa
dc.identifier.repourlhttps://repositorio.cuc.edu.co/spa
dc.type.coarhttp://purl.org/coar/resource_type/c_6501spa
dc.type.contentTextspa
dc.type.driverinfo:eu-repo/semantics/articlespa
dc.type.redcolhttp://purl.org/redcol/resource_type/ARTspa
dc.type.versioninfo:eu-repo/semantics/acceptedVersionspa
dc.type.coarversionhttp://purl.org/coar/version/c_ab4af688f83e57aaspa
dc.rights.coarhttp://purl.org/coar/access_right/c_abf2spa


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