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Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/88827
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dc.contributor.authorMorris, Edward P.-
dc.contributor.authorHendriks, Iris E.-
dc.contributor.authorPérez Lloréns, José Lucas-
dc.date.accessioned2013-12-19T08:13:26Z-
dc.date.available2013-12-19T08:13:26Z-
dc.date.issued2013-12-04-
dc.identifier.citationLimnology and Oceanograph: Fluids and Environments 3: 210–224 (2013)es_ES
dc.identifier.issn0024-3590-
dc.identifier.urihttp://hdl.handle.net/10261/88827-
dc.descriptionMorris, Edward P. et al.es_ES
dc.description.abstractIn low-nutrient, macrophyte-dominated coastal zones, benthic ammonium (NH4+) uptake may be influenced by the structural properties of plant canopies via their effect on near-bed hydrodynamics. Using a dual-tracer (uranine and 15NH4+) method that does not require enclosures, we examined how this process affects nutrient uptake rates within a tidally dominated, patchy Caulerpa prolifera–Cymodocea nodosa landscape. NH4+ uptake was determined by calculating tissue 15N excesses and correcting for 15N enrichment as derived from uranine concentration. Vertical hydrodynamic profiles were measured in the downstream flow direction from outside to inside of the C. nodosa bed by using an array of acoustic Doppler velocimeters. The transition from a C. prolifera to a C. nodosa bed included a change in both benthic canopy properties (short and dense to tall and sparse) and sediment topography (0.2-m increase in water column depth) that resulted in an increase in longitudinal advection and turbulent diffusivity within the C. nodosa canopy between 0.5 and 1.5 m from the leading edge. Vertical differences in canopy water exchange appeared to explain variations in uptake between biotic functional groups; however, no clear differences in longitudinal uptake were found. Using in situ labeling, this study demonstrated for the first time the role of hydrodynamics in structuring NH4+ uptake within an undisturbed, patchy macrophyte landscape.es_ES
dc.description.sponsorshipThis research was supported by regional government of Andalusia project FUNDIV (“Functional diversity of submerged macrophytes: Influence on carbon and nitrogen processing”) (P07-RNM-2516), the Spanish project IMACHYDRO (“Interactions between marine macrophyte beds and hydrodynamics: From organisms to ecosystems” CTM2008-00012/MAR), a travel grant from the Schure-Beijerinck-Popping Fund (SBP/JK/2007-32), and the Netherlands Organization for Scientific Research.es_ES
dc.description.sponsorshipNetherlands Organization for Scientific Research-
dc.description.sponsorshipRegional government of Andalusia-
dc.description.sponsorshipSchure-Beijerinck-Popping Fund-
dc.language.isoenges_ES
dc.publisherAssociation for the Sciences of Limnology and Oceanographyes_ES
dc.publisherDuke University Press-
dc.relation.isversionofPublisher's version-
dc.rightsopenAccesses_ES
dc.subjectNutrientses_ES
dc.subjectWater flowes_ES
dc.subjectPatchinesses_ES
dc.subjectCymodocea nodosaes_ES
dc.subjectCaulerpa proliferaes_ES
dc.subject15NH4es_ES
dc.titleThe role of hydrodynamics in structuring in situ ammonium uptake within a submerged macrophyte communityes_ES
dc.typeartículoes_ES
dc.identifier.doi10.1215/21573689-2397024-
dc.description.peerreviewedPeer reviewedes_ES
dc.relation.publisherversionhttp://dx.doi.org/10.1215/21573689-2397024-
dc.type.coarhttp://purl.org/coar/resource_type/c_6501es_ES
item.languageiso639-1en-
item.fulltextWith Fulltext-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.cerifentitytypePublications-
item.grantfulltextopen-
item.openairetypeartículo-
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