The effects of hydraulic works and wetlands function in the Salado-River basin (Buenos Aires, Argentina)

Autores
Bazzuri, María Elisa; Gabellone, Néstor Adrián; Solari, Lía Cristina
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Man-made activities exert great influences on fluvial ecosystems, with lowland rivers being substantially modified through agricultural land use and populations. The recent construction of drainage canals in the upper stretch of the Salado-River basin caused the mobilization of huge amounts of salts formerly stored in the groundwater. The main aim of this work was to analyze the effect of the discharges of those canals into the Salado-River water, under different hydrologic conditions, and the role of the wetlands and shallow lakes placed along the canals’ system. Physicochemical variables were measured and water samples were taken during times of high water, mean flows, drought, and extreme drought. The environmental variables and the plankton development were related to the hydrologic regime and reached minimum values during floods because of low temperatures and dilution. Local effects on the water’s ionic composition became pronounced during droughts because of groundwater input. Nutrient concentrations were mainly associated with point wastewater discharges. Conductivity, ion concentrations, total plankton biomass, and species richness increased in the Salado-River downstream site, after the canals’ discharges. The artificial-drainage system definitely promotes the incorporation of salts into the Salado-River basin. In this scenario, a careful hydraulic management is needed to take into account this issue of secondary salinization that threatens the economic exploitation of the region. The wetlands present in this study acted as service environments not only helping to reduce salt, nutrient, and suspended-solid concentrations downstream but also contributing a plethora of species and plankton biomass into the Salado-River main course.
Instituto de Limnología "Dr. Raúl A. Ringuelet"
Materia
Ciencias Naturales
Lowland river
Canalizations
Wetlands
Saline waters
Salinization
Argentine pampas
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/119656

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spelling The effects of hydraulic works and wetlands function in the Salado-River basin (Buenos Aires, Argentina)Bazzuri, María ElisaGabellone, Néstor AdriánSolari, Lía CristinaCiencias NaturalesLowland riverCanalizationsWetlandsSaline watersSalinizationArgentine pampasMan-made activities exert great influences on fluvial ecosystems, with lowland rivers being substantially modified through agricultural land use and populations. The recent construction of drainage canals in the upper stretch of the Salado-River basin caused the mobilization of huge amounts of salts formerly stored in the groundwater. The main aim of this work was to analyze the effect of the discharges of those canals into the Salado-River water, under different hydrologic conditions, and the role of the wetlands and shallow lakes placed along the canals’ system. Physicochemical variables were measured and water samples were taken during times of high water, mean flows, drought, and extreme drought. The environmental variables and the plankton development were related to the hydrologic regime and reached minimum values during floods because of low temperatures and dilution. Local effects on the water’s ionic composition became pronounced during droughts because of groundwater input. Nutrient concentrations were mainly associated with point wastewater discharges. Conductivity, ion concentrations, total plankton biomass, and species richness increased in the Salado-River downstream site, after the canals’ discharges. The artificial-drainage system definitely promotes the incorporation of salts into the Salado-River basin. In this scenario, a careful hydraulic management is needed to take into account this issue of secondary salinization that threatens the economic exploitation of the region. The wetlands present in this study acted as service environments not only helping to reduce salt, nutrient, and suspended-solid concentrations downstream but also contributing a plethora of species and plankton biomass into the Salado-River main course.Instituto de Limnología "Dr. Raúl A. Ringuelet"2018info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/119656enginfo:eu-repo/semantics/altIdentifier/issn/1573-2959info:eu-repo/semantics/altIdentifier/doi/10.1007/s10661-017-6448-7info:eu-repo/semantics/altIdentifier/hdl/11746/7887info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:28:15Zoai:sedici.unlp.edu.ar:10915/119656Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:28:15.647SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv The effects of hydraulic works and wetlands function in the Salado-River basin (Buenos Aires, Argentina)
title The effects of hydraulic works and wetlands function in the Salado-River basin (Buenos Aires, Argentina)
spellingShingle The effects of hydraulic works and wetlands function in the Salado-River basin (Buenos Aires, Argentina)
Bazzuri, María Elisa
Ciencias Naturales
Lowland river
Canalizations
Wetlands
Saline waters
Salinization
Argentine pampas
title_short The effects of hydraulic works and wetlands function in the Salado-River basin (Buenos Aires, Argentina)
title_full The effects of hydraulic works and wetlands function in the Salado-River basin (Buenos Aires, Argentina)
title_fullStr The effects of hydraulic works and wetlands function in the Salado-River basin (Buenos Aires, Argentina)
title_full_unstemmed The effects of hydraulic works and wetlands function in the Salado-River basin (Buenos Aires, Argentina)
title_sort The effects of hydraulic works and wetlands function in the Salado-River basin (Buenos Aires, Argentina)
dc.creator.none.fl_str_mv Bazzuri, María Elisa
Gabellone, Néstor Adrián
Solari, Lía Cristina
author Bazzuri, María Elisa
author_facet Bazzuri, María Elisa
Gabellone, Néstor Adrián
Solari, Lía Cristina
author_role author
author2 Gabellone, Néstor Adrián
Solari, Lía Cristina
author2_role author
author
dc.subject.none.fl_str_mv Ciencias Naturales
Lowland river
Canalizations
Wetlands
Saline waters
Salinization
Argentine pampas
topic Ciencias Naturales
Lowland river
Canalizations
Wetlands
Saline waters
Salinization
Argentine pampas
dc.description.none.fl_txt_mv Man-made activities exert great influences on fluvial ecosystems, with lowland rivers being substantially modified through agricultural land use and populations. The recent construction of drainage canals in the upper stretch of the Salado-River basin caused the mobilization of huge amounts of salts formerly stored in the groundwater. The main aim of this work was to analyze the effect of the discharges of those canals into the Salado-River water, under different hydrologic conditions, and the role of the wetlands and shallow lakes placed along the canals’ system. Physicochemical variables were measured and water samples were taken during times of high water, mean flows, drought, and extreme drought. The environmental variables and the plankton development were related to the hydrologic regime and reached minimum values during floods because of low temperatures and dilution. Local effects on the water’s ionic composition became pronounced during droughts because of groundwater input. Nutrient concentrations were mainly associated with point wastewater discharges. Conductivity, ion concentrations, total plankton biomass, and species richness increased in the Salado-River downstream site, after the canals’ discharges. The artificial-drainage system definitely promotes the incorporation of salts into the Salado-River basin. In this scenario, a careful hydraulic management is needed to take into account this issue of secondary salinization that threatens the economic exploitation of the region. The wetlands present in this study acted as service environments not only helping to reduce salt, nutrient, and suspended-solid concentrations downstream but also contributing a plethora of species and plankton biomass into the Salado-River main course.
Instituto de Limnología "Dr. Raúl A. Ringuelet"
description Man-made activities exert great influences on fluvial ecosystems, with lowland rivers being substantially modified through agricultural land use and populations. The recent construction of drainage canals in the upper stretch of the Salado-River basin caused the mobilization of huge amounts of salts formerly stored in the groundwater. The main aim of this work was to analyze the effect of the discharges of those canals into the Salado-River water, under different hydrologic conditions, and the role of the wetlands and shallow lakes placed along the canals’ system. Physicochemical variables were measured and water samples were taken during times of high water, mean flows, drought, and extreme drought. The environmental variables and the plankton development were related to the hydrologic regime and reached minimum values during floods because of low temperatures and dilution. Local effects on the water’s ionic composition became pronounced during droughts because of groundwater input. Nutrient concentrations were mainly associated with point wastewater discharges. Conductivity, ion concentrations, total plankton biomass, and species richness increased in the Salado-River downstream site, after the canals’ discharges. The artificial-drainage system definitely promotes the incorporation of salts into the Salado-River basin. In this scenario, a careful hydraulic management is needed to take into account this issue of secondary salinization that threatens the economic exploitation of the region. The wetlands present in this study acted as service environments not only helping to reduce salt, nutrient, and suspended-solid concentrations downstream but also contributing a plethora of species and plankton biomass into the Salado-River main course.
publishDate 2018
dc.date.none.fl_str_mv 2018
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/119656
url http://sedici.unlp.edu.ar/handle/10915/119656
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/1573-2959
info:eu-repo/semantics/altIdentifier/doi/10.1007/s10661-017-6448-7
info:eu-repo/semantics/altIdentifier/hdl/11746/7887
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
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