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

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 repl...

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Autores principales: Dippolito, Andrea, Ardohain, Diego Martín, Claps, María Cristina, Gabellone, Néstor Adrián
Formato: Articulo
Lenguaje:Español
Publicado: 2009
Materias:
Ciencias Naturales
Zooplancton
muestreo intensivo
Río Salado (Buenos Aires, Argentina)
Construcciones Hidráulicas
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/68796
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-68796
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Español
topic Ciencias Naturales
Zooplancton
muestreo intensivo
Río Salado (Buenos Aires, Argentina)
Construcciones Hidráulicas
spellingShingle Ciencias Naturales
Zooplancton
muestreo intensivo
Río Salado (Buenos Aires, Argentina)
Construcciones Hidráulicas
Dippolito, Andrea
Ardohain, Diego Martín
Claps, María Cristina
Gabellone, Néstor Adrián
Muestreo intensivo del zooplancton en el sector inferior del Río Salado (Bs. As.) durante la ejecución de una obra hidráulica
topic_facet Ciencias Naturales
Zooplancton
muestreo intensivo
Río Salado (Buenos Aires, Argentina)
Construcciones Hidráulicas
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.
format Articulo
Articulo
author Dippolito, Andrea
Ardohain, Diego Martín
Claps, María Cristina
Gabellone, Néstor Adrián
author_facet Dippolito, Andrea
Ardohain, Diego Martín
Claps, María Cristina
Gabellone, Néstor Adrián
author_sort Dippolito, Andrea
title Muestreo intensivo del zooplancton en el sector inferior del Río Salado (Bs. As.) durante la ejecución de una obra hidráulica
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
publishDate 2009
url http://sedici.unlp.edu.ar/handle/10915/68796
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