Chemical variation of surface water and groundwater in relation to water balance in the watershed of El Pescado Creek (Central-Eastern Argentina)

The watershed of El Pescado Creek has been established as a protected landscape; however, it is currently exposed to an intense land use and coverage change process, based on the conversion of grassland areas into greenhouse horticulture and urbanized areas. The aim of this work was to analyze hydro...

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Autores principales: Delgado, María Isabel, Carol, Eleonora Silvina, Mac Donagh, María Elicia, Casco, María Adela
Formato: Articulo
Lenguaje:Inglés
Publicado: 2020
Materias:
Ciencias Naturales
Major ions
Water stable isotopes
Flatland watershed
Water balance
Seasonal variation
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/134535
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-134535
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
Major ions
Water stable isotopes
Flatland watershed
Water balance
Seasonal variation
spellingShingle Ciencias Naturales
Major ions
Water stable isotopes
Flatland watershed
Water balance
Seasonal variation
Delgado, María Isabel
Carol, Eleonora Silvina
Mac Donagh, María Elicia
Casco, María Adela
Chemical variation of surface water and groundwater in relation to water balance in the watershed of El Pescado Creek (Central-Eastern Argentina)
topic_facet Ciencias Naturales
Major ions
Water stable isotopes
Flatland watershed
Water balance
Seasonal variation
description The watershed of El Pescado Creek has been established as a protected landscape; however, it is currently exposed to an intense land use and coverage change process, based on the conversion of grassland areas into greenhouse horticulture and urbanized areas. The aim of this work was to analyze hydrochemical modifications in this changing scenario, to identify parameter variations associated to water balance. The monitory network included surface water and groundwater samplings during winter, spring and summer of 2017. Daily water balance was estimated throughout the annual cycle. Electrical conductivity and pH were determined together with major ions (Na⁺, K⁺, Mg²⁺, Ca²⁺, CO₃²⁻, HCO₃⁻, Cl⁻, SO₄²⁻ and NO₃⁻). The analysis of water stable isotopes (δ¹⁸O and δ²H) was performed for one sampling date. Water-balance variations during short-term periods affected surface water chemistry, although no relevant influence on deep groundwater was registered. Major ions variation in the surface water of the upper watershed might be related to runoff alteration caused by recently established impervious cover and by the dynamic of groundwater inputs. Isotopic analysis of surface water shows deviation from local meteoric line, with an isotopic enrichment following a tendency associated to evaporation processes. Deep groundwater samples express a recharge process by rainfall infiltration, with little or no previous evaporation (deuterium amounts were similar to those corresponding to local rainfall). Incipient evaporation processes are registered for shallow groundwater, possibly occurring before infiltration in the non-saturated zone, or right from the phreatic, when it is near the surface.
format Articulo
Articulo
author Delgado, María Isabel
Carol, Eleonora Silvina
Mac Donagh, María Elicia
Casco, María Adela
author_facet Delgado, María Isabel
Carol, Eleonora Silvina
Mac Donagh, María Elicia
Casco, María Adela
author_sort Delgado, María Isabel
title Chemical variation of surface water and groundwater in relation to water balance in the watershed of El Pescado Creek (Central-Eastern Argentina)
title_short Chemical variation of surface water and groundwater in relation to water balance in the watershed of El Pescado Creek (Central-Eastern Argentina)
title_full Chemical variation of surface water and groundwater in relation to water balance in the watershed of El Pescado Creek (Central-Eastern Argentina)
title_fullStr Chemical variation of surface water and groundwater in relation to water balance in the watershed of El Pescado Creek (Central-Eastern Argentina)
title_full_unstemmed Chemical variation of surface water and groundwater in relation to water balance in the watershed of El Pescado Creek (Central-Eastern Argentina)
title_sort chemical variation of surface water and groundwater in relation to water balance in the watershed of el pescado creek (central-eastern argentina)
publishDate 2020
url http://sedici.unlp.edu.ar/handle/10915/134535
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bdutipo_str Repositorios
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