Planktonic rotifers of a saline-lowland river: the Salado River (Argentina)

Seasonal samples of zooplankton were taken during 1997-1999 at fifteen stations in the Salado River basin, and analysed in order to study the rotifer fauna. Spatio-temporal changes in the rotifer plankton composition were examined in the main channel and its tributaries. The majority of species foun...

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Detalles Bibliográficos
Autores principales: Neschuk, Nancy Carolina, Claps, María Cristina, Gabellone, Néstor Adrián
Formato: Articulo
Lenguaje:Inglés
Publicado: 2002
Materias:
Ciencias Naturales
Argentina
Plankton
Rotifers
Saline lowland river
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/83304
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-83304
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
Argentina
Plankton
Rotifers
Saline lowland river
spellingShingle Ciencias Naturales
Argentina
Plankton
Rotifers
Saline lowland river
Neschuk, Nancy Carolina
Claps, María Cristina
Gabellone, Néstor Adrián
Planktonic rotifers of a saline-lowland river: the Salado River (Argentina)
topic_facet Ciencias Naturales
Argentina
Plankton
Rotifers
Saline lowland river
description Seasonal samples of zooplankton were taken during 1997-1999 at fifteen stations in the Salado River basin, and analysed in order to study the rotifer fauna. Spatio-temporal changes in the rotifer plankton composition were examined in the main channel and its tributaries. The majority of species found are tolerant of a wide range of pH, whereas others prefer neutral to alkaline values. The total rotifer plankton density increased downstream from the headwaters to the middle sector of the river. The associated shallow lakes and tributaries were an important source of species. Variations in density and number of species were shown to be associated with conductivity, and species tolerant of high conductivity conditions were especially prevalent (upper 7,000 μS cm-1). Rotifer density was influenced by hydrological conditions, which promoted maximum values during low water periods and in the high water condition promoted the incorporation of species from shallow lakes connected with the river during flood events. The species associations found are related to such water parameters as conductivity and nutrient availability and to the presence of ponds and shallow, waterlogged depressions connected in varying extent to the main channel.
format Articulo
Articulo
author Neschuk, Nancy Carolina
Claps, María Cristina
Gabellone, Néstor Adrián
author_facet Neschuk, Nancy Carolina
Claps, María Cristina
Gabellone, Néstor Adrián
author_sort Neschuk, Nancy Carolina
title Planktonic rotifers of a saline-lowland river: the Salado River (Argentina)
title_short Planktonic rotifers of a saline-lowland river: the Salado River (Argentina)
title_full Planktonic rotifers of a saline-lowland river: the Salado River (Argentina)
title_fullStr Planktonic rotifers of a saline-lowland river: the Salado River (Argentina)
title_full_unstemmed Planktonic rotifers of a saline-lowland river: the Salado River (Argentina)
title_sort planktonic rotifers of a saline-lowland river: the salado river (argentina)
publishDate 2002
url http://sedici.unlp.edu.ar/handle/10915/83304
work_keys_str_mv AT neschuknancycarolina planktonicrotifersofasalinelowlandriverthesaladoriverargentina
AT clapsmariacristina planktonicrotifersofasalinelowlandriverthesaladoriverargentina
AT gabellonenestoradrian planktonicrotifersofasalinelowlandriverthesaladoriverargentina
bdutipo_str Repositorios
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