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resumen

Abstract
Our understanding of how groundwater mediates evapotranspiration/streamflow partitioning is still fragmented and catchment studies under changing vegetation conditions can provide a useful frame for integration. We explored this partition in a flat sedimentary dry catchment in central Argentina in which the replacement of native vegetation with rainfed crops was accompanied by the abrupt formation of groundwater‐fed streams by subsurface erosion (i.e. [ver mas...]
dc.contributor.authorJobbagy Gampel, Esteban Gabriel
dc.contributor.authorLorenzo, Santiago
dc.contributor.authorBuono, Nicolás
dc.contributor.authorPáez, Ricardo
dc.contributor.authorDiaz, Yésica
dc.contributor.authorMarchesini, Victoria
dc.contributor.authorNosetto, Marcelo Daniel
dc.date.accessioned2021-05-03T18:09:30Z
dc.date.available2021-05-03T18:09:30Z
dc.date.issued2021-04
dc.identifier.issn0885-6087
dc.identifier.issn1099-1085
dc.identifier.otherhttps://doi.org/10.1002/hyp.14188
dc.identifier.urihttp://hdl.handle.net/20.500.12123/9253
dc.identifier.urihttps://onlinelibrary.wiley.com/doi/abs/10.1002/hyp.14188
dc.description.abstractOur understanding of how groundwater mediates evapotranspiration/streamflow partitioning is still fragmented and catchment studies under changing vegetation conditions can provide a useful frame for integration. We explored this partition in a flat sedimentary dry catchment in central Argentina in which the replacement of native vegetation with rainfed crops was accompanied by the abrupt formation of groundwater‐fed streams by subsurface erosion (i.e. sapping) episodes. Historical records indicated widespread water table rises (~0.3 m y‐1 on average). Groundwater level and stream baseflow fluctuated seasonally with minima in the warm rainy season, indicating that evaporative discharge rather than rainfall shapes saturated flows. Diurnal groundwater level fluctuations showed that plant uptake was widespread where water tables are shallow (<3 m) but restricted to deep‐rooted Prosopis forests where they are deep (7‐10 m). MODIS and LANDSAT NDVI revealed a long‐term greening for native vegetation, new wetlands included, but not for croplands, suggesting more limited evapotranspiration‐groundwater level regulation under agriculture. Close to the deepest (20 m) and most active incisions, groundwater level and greenness declined and stream baseflow showed no seasonal fluctuations, hinting decoupling from evapotranspiration. Intense ecological and geomorphological transformations in this catchment exposed the interplay of five mechanisms governing evapotranspiration/streamflow partition including (i) unsaturated uptake and both (ii) riparian and (iii) distributed uptake from the saturated zone by plants, as well as (iv) deepening incisions and (v) sediment deposits over riparian zones by streams. Acknowledging the complex interplay of these mechanism with groundwater is crucial to predict and manage future hydrological changes in the dry plains of South America.eng
dc.formatapplication/pdfes_AR
dc.language.isoenges_AR
dc.publisherWileyes_AR
dc.rightsinfo:eu-repo/semantics/embargoedAccesses_AR
dc.sourceHydrological Processes (First published: 25 April 2021)es_AR
dc.subjectAgua Afloradaes_AR
dc.subjectWater Yieldeng
dc.subjectCursos de Aguaes_AR
dc.subjectRiverseng
dc.subjectAguas Subterráneases_AR
dc.subjectGroundwatereng
dc.subjectImágenes por Satéliteses_AR
dc.subjectSatellite Imageryeng
dc.subjectHidrologíaes_AR
dc.subjectHydrologyeng
dc.subject.otherStreamseng
dc.subject.otherRíoses_AR
dc.subject.otherLos Morros, San Luises_AR
dc.titlePlants vs. Streams: Their groundwater‐mediated competition at “El Morro”, a developing catchment in the dry plains of Argentinaes_AR
dc.typeinfo:ar-repo/semantics/artículoes_AR
dc.typeinfo:eu-repo/semantics/articlees_AR
dc.typeinfo:eu-repo/semantics/acceptedVersiones_AR
dc.description.origenEEA San Luises_AR
dc.description.filFil: Jobbagy Gampel, Esteban Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Matemática Aplicada de San Luis; Argentinaes_AR
dc.description.filFil: Jobbagy Gampel, Esteban Gabriel. Universidad Nacional de San Luis. Facultad de Ciencias Físico, Matemáticas y Naturales. Instituto de Matemática Aplicada de San Luis; Argentinaes_AR
dc.description.filFil: Lorenzo, Santiago. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria San Luis; Argentinaes_AR
dc.description.filFil: Buono, Nicolás. Universidad Nacional de La Plata. Facultad de Ingeniería. Departamento de Hidráulica; Argentinaes_AR
dc.description.filFil: Páez, Ricardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Matemática Aplicada de San Luis; Argentinaes_AR
dc.description.filFil: Páez, Ricardo. Universidad Nacional de San Luis. Facultad de Ciencias Físico, Matemáticas y Naturales. Instituto de Matemática Aplicada de San Luis; Argentinaes_AR
dc.description.filFil: Diaz, Yésica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Matemática Aplicada de San Luis; Argentinaes_AR
dc.description.filFil: Diaz, Yésica. Universidad Nacional de San Luis. Facultad de Ciencias Físico, Matemáticas y Naturales. Instituto de Matemática Aplicada de San Luis; Argentinaes_AR
dc.description.filFil: Marchesini, Victoria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Matemática Aplicada de San Luis; Argentinaes_AR
dc.description.filFil: Marchesini, Victoria. Universidad Nacional de San Luis. Facultad de Ciencias Físico, Matemáticas y Naturales. Instituto de Matemática Aplicada de San Luis; Argentinaes_AR
dc.description.filFil: Nosetto, Marcelo Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Matemática Aplicada de San Luis; Argentinaes_AR
dc.description.filFil: Nosetto, Marcelo Daniel. Universidad Nacional de San Luis. Facultad de Ciencias Físico, Matemáticas y Naturales. Instituto de Matemática Aplicada de San Luis; Argentinaes_AR
dc.description.filFil: Nosetto, Marcelo Daniel. Universidad Nacional de Entre Ríos. Facultad de Ciencias Agropecuarias. Cátedra de Climatología Agrícola; Argentinaes_AR
dc.subtypecientifico


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