Muestreo intensivo del zooplancton en el sector inferior del Río Salado (Bs. As.) durante la ejecución de una obra hidráulica

Autores
Dippolito, Andrea; Ardohain, Diego Martín; Claps, María Cristina; Gabellone, Néstor Adrián
Año de publicación
2009
Idioma
español castellano
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The objective of this study was to investigate changes occurred in the structure and dynamics of zooplankton community during dredging works made in the lower sector of Salado River (Buenos Aires, Argentina). The samples were taken before and during the extraction of a river restriction and the replacement of a bridge at one site upstream and other downstream of this hydraulic modification. The dredging works were made during low water period. Zooplankton samples were obtained filtering volumes of 10 l extracted at three points of a transect in the river channel (both banks and the middle of the course) during 14 weeks (weekly from March to June). Physical and chemical parameters were measured in situ with a multimeter. The conductivity decreased from 12,000 μS/cm (March-April) to 6,000 μS/cm (April-June). The zooplankton assemblages were correlated with factors such as conductivity, turbidity, water temperature, and phytoplankton density. Tintinids (Tintinnidium fluviatile and Codonella cratera) prevailed with high salinity whereas rotifers (Brachionus plicatilis and Keratella tropica, among others) dominated later. Microcrustaceans were scarce related to the conductivity of the river. The analyzed sites showed similar composition and abundance of zooplankton during all sampling period. We can assume that the effects of dredging works in low water conditions cause minimal downstream perturbations on zooplankton community.
Instituto de Limnología "Raúl A. Ringuelet"
Materia
Ciencias Naturales
Zooplancton
muestreo intensivo
Río Salado (Buenos Aires, Argentina)
Construcciones Hidráulicas
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-nd/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/68796
Acceder
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network_name_str SEDICI (UNLP)
spelling Muestreo intensivo del zooplancton en el sector inferior del Río Salado (Bs. As.) durante la ejecución de una obra hidráulicaDippolito, AndreaArdohain, Diego MartínClaps, María CristinaGabellone, Néstor AdriánCiencias NaturalesZooplanctonmuestreo intensivoRío Salado (Buenos Aires, Argentina)Construcciones HidráulicasThe objective of this study was to investigate changes occurred in the structure and dynamics of zooplankton community during dredging works made in the lower sector of Salado River (Buenos Aires, Argentina). The samples were taken before and during the extraction of a river restriction and the replacement of a bridge at one site upstream and other downstream of this hydraulic modification. The dredging works were made during low water period. Zooplankton samples were obtained filtering volumes of 10 l extracted at three points of a transect in the river channel (both banks and the middle of the course) during 14 weeks (weekly from March to June). Physical and chemical parameters were measured in situ with a multimeter. The conductivity decreased from 12,000 μS/cm (March-April) to 6,000 μS/cm (April-June). The zooplankton assemblages were correlated with factors such as conductivity, turbidity, water temperature, and phytoplankton density. Tintinids (Tintinnidium fluviatile and Codonella cratera) prevailed with high salinity whereas rotifers (Brachionus plicatilis and Keratella tropica, among others) dominated later. Microcrustaceans were scarce related to the conductivity of the river. The analyzed sites showed similar composition and abundance of zooplankton during all sampling period. We can assume that the effects of dredging works in low water conditions cause minimal downstream perturbations on zooplankton community.Instituto de Limnología "Raúl A. Ringuelet"2009info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf229-239http://sedici.unlp.edu.ar/handle/10915/68796spainfo:eu-repo/semantics/altIdentifier/issn/0326-1638info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:10:45Zoai:sedici.unlp.edu.ar:10915/68796Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:10:45.336SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Muestreo intensivo del zooplancton en el sector inferior del Río Salado (Bs. As.) durante la ejecución de una obra hidráulica
title Muestreo intensivo del zooplancton en el sector inferior del Río Salado (Bs. As.) durante la ejecución de una obra hidráulica
spellingShingle Muestreo intensivo del zooplancton en el sector inferior del Río Salado (Bs. As.) durante la ejecución de una obra hidráulica
Dippolito, Andrea
Ciencias Naturales
Zooplancton
muestreo intensivo
Río Salado (Buenos Aires, Argentina)
Construcciones Hidráulicas
title_short Muestreo intensivo del zooplancton en el sector inferior del Río Salado (Bs. As.) durante la ejecución de una obra hidráulica
title_full Muestreo intensivo del zooplancton en el sector inferior del Río Salado (Bs. As.) durante la ejecución de una obra hidráulica
title_fullStr Muestreo intensivo del zooplancton en el sector inferior del Río Salado (Bs. As.) durante la ejecución de una obra hidráulica
title_full_unstemmed Muestreo intensivo del zooplancton en el sector inferior del Río Salado (Bs. As.) durante la ejecución de una obra hidráulica
title_sort Muestreo intensivo del zooplancton en el sector inferior del Río Salado (Bs. As.) durante la ejecución de una obra hidráulica
dc.creator.none.fl_str_mv Dippolito, Andrea
Ardohain, Diego Martín
Claps, María Cristina
Gabellone, Néstor Adrián
author Dippolito, Andrea
author_facet Dippolito, Andrea
Ardohain, Diego Martín
Claps, María Cristina
Gabellone, Néstor Adrián
author_role author
author2 Ardohain, Diego Martín
Claps, María Cristina
Gabellone, Néstor Adrián
author2_role author
author
author
dc.subject.none.fl_str_mv Ciencias Naturales
Zooplancton
muestreo intensivo
Río Salado (Buenos Aires, Argentina)
Construcciones Hidráulicas
topic Ciencias Naturales
Zooplancton
muestreo intensivo
Río Salado (Buenos Aires, Argentina)
Construcciones Hidráulicas
dc.description.none.fl_txt_mv The objective of this study was to investigate changes occurred in the structure and dynamics of zooplankton community during dredging works made in the lower sector of Salado River (Buenos Aires, Argentina). The samples were taken before and during the extraction of a river restriction and the replacement of a bridge at one site upstream and other downstream of this hydraulic modification. The dredging works were made during low water period. Zooplankton samples were obtained filtering volumes of 10 l extracted at three points of a transect in the river channel (both banks and the middle of the course) during 14 weeks (weekly from March to June). Physical and chemical parameters were measured in situ with a multimeter. The conductivity decreased from 12,000 μS/cm (March-April) to 6,000 μS/cm (April-June). The zooplankton assemblages were correlated with factors such as conductivity, turbidity, water temperature, and phytoplankton density. Tintinids (Tintinnidium fluviatile and Codonella cratera) prevailed with high salinity whereas rotifers (Brachionus plicatilis and Keratella tropica, among others) dominated later. Microcrustaceans were scarce related to the conductivity of the river. The analyzed sites showed similar composition and abundance of zooplankton during all sampling period. We can assume that the effects of dredging works in low water conditions cause minimal downstream perturbations on zooplankton community.
Instituto de Limnología "Raúl A. Ringuelet"
description The objective of this study was to investigate changes occurred in the structure and dynamics of zooplankton community during dredging works made in the lower sector of Salado River (Buenos Aires, Argentina). The samples were taken before and during the extraction of a river restriction and the replacement of a bridge at one site upstream and other downstream of this hydraulic modification. The dredging works were made during low water period. Zooplankton samples were obtained filtering volumes of 10 l extracted at three points of a transect in the river channel (both banks and the middle of the course) during 14 weeks (weekly from March to June). Physical and chemical parameters were measured in situ with a multimeter. The conductivity decreased from 12,000 μS/cm (March-April) to 6,000 μS/cm (April-June). The zooplankton assemblages were correlated with factors such as conductivity, turbidity, water temperature, and phytoplankton density. Tintinids (Tintinnidium fluviatile and Codonella cratera) prevailed with high salinity whereas rotifers (Brachionus plicatilis and Keratella tropica, among others) dominated later. Microcrustaceans were scarce related to the conductivity of the river. The analyzed sites showed similar composition and abundance of zooplankton during all sampling period. We can assume that the effects of dredging works in low water conditions cause minimal downstream perturbations on zooplankton community.
publishDate 2009
dc.date.none.fl_str_mv 2009
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/68796
url http://sedici.unlp.edu.ar/handle/10915/68796
dc.language.none.fl_str_mv spa
language spa
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0326-1638
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0/
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
dc.format.none.fl_str_mv application/pdf
229-239
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 13.070432

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