Distribución horizontal y vertical del zooplancton en un ciclo diario en el litoral de una laguna pampásica

Autores
Benítez, Hernán Hugo; Claps, María Cristina
Año de publicación
2009
Idioma
español castellano
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The vertical and horizontal distributions of zooplankton were investigated in the littoral zone of the San Miguel del Monte Lake (Buenos Aires, Argentina) in five occasions with a diel time scale (24 h) in summer. Sixty zooplankton species were recorded. The measured parameters (conductivity, temperature, dissolved oxygen, pH) showed minimal differences among the sampling occasions. Statistically significant horizontal and vertical zooplankton abundance gradients occurred. The majority of the smallbodied zooplankton (ciliates and rotifers) did not show a significant change in the horizontal or vertical distribution. Only Tintinidium fuviatile and Keratella tropica showed a significant avoidance of the surface during midnight, whereas in the same time Keratella americana showed significant aggregating in the littoral sector more distant to the edge. The spatial distribution of large-bodied zooplankton varied according diel scale. The cladocerans (Bosmina huaronensis and Diaphanosoma birgei) exhibited significant changes in horizontal position with the greatest avoidance of shore during midnight. The copepods (Notodiaptomus incompositus and Metacyclops mendocinus) showed a pronounced diel vertical differentiation, and were more abundant at surface at sunset and midnight. The high inorganic turbidity recorded (transparency: 0.35 m) could reduce the risk of predation and for this reason some zooplankters exhibit limited changes of their spatial distribution during the diel cycle.
Instituto de Limnología "Raúl A. Ringuelet"
Materia
Ciencias Naturales
Buenos Aires (Argentina)
Zooplancton
distribución espacio-temporal
Laguna Litoral
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:10915/68061
Acceder
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spelling Distribución horizontal y vertical del zooplancton en un ciclo diario en el litoral de una laguna pampásicaBenítez, Hernán HugoClaps, María CristinaCiencias NaturalesBuenos Aires (Argentina)Zooplanctondistribución espacio-temporalLaguna LitoralThe vertical and horizontal distributions of zooplankton were investigated in the littoral zone of the San Miguel del Monte Lake (Buenos Aires, Argentina) in five occasions with a diel time scale (24 h) in summer. Sixty zooplankton species were recorded. The measured parameters (conductivity, temperature, dissolved oxygen, pH) showed minimal differences among the sampling occasions. Statistically significant horizontal and vertical zooplankton abundance gradients occurred. The majority of the smallbodied zooplankton (ciliates and rotifers) did not show a significant change in the horizontal or vertical distribution. Only Tintinidium fuviatile and Keratella tropica showed a significant avoidance of the surface during midnight, whereas in the same time Keratella americana showed significant aggregating in the littoral sector more distant to the edge. The spatial distribution of large-bodied zooplankton varied according diel scale. The cladocerans (Bosmina huaronensis and Diaphanosoma birgei) exhibited significant changes in horizontal position with the greatest avoidance of shore during midnight. The copepods (Notodiaptomus incompositus and Metacyclops mendocinus) showed a pronounced diel vertical differentiation, and were more abundant at surface at sunset and midnight. The high inorganic turbidity recorded (transparency: 0.35 m) could reduce the risk of predation and for this reason some zooplankters exhibit limited changes of their spatial distribution during the diel cycle.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/pdf19-31http://sedici.unlp.edu.ar/handle/10915/68061spainfo: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:UNLP2025-09-03T10:42:30Zoai:sedici.unlp.edu.ar:10915/68061Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-03 10:42:31.008SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Distribución horizontal y vertical del zooplancton en un ciclo diario en el litoral de una laguna pampásica
title Distribución horizontal y vertical del zooplancton en un ciclo diario en el litoral de una laguna pampásica
spellingShingle Distribución horizontal y vertical del zooplancton en un ciclo diario en el litoral de una laguna pampásica
Benítez, Hernán Hugo
Ciencias Naturales
Buenos Aires (Argentina)
Zooplancton
distribución espacio-temporal
Laguna Litoral
title_short Distribución horizontal y vertical del zooplancton en un ciclo diario en el litoral de una laguna pampásica
title_full Distribución horizontal y vertical del zooplancton en un ciclo diario en el litoral de una laguna pampásica
title_fullStr Distribución horizontal y vertical del zooplancton en un ciclo diario en el litoral de una laguna pampásica
title_full_unstemmed Distribución horizontal y vertical del zooplancton en un ciclo diario en el litoral de una laguna pampásica
title_sort Distribución horizontal y vertical del zooplancton en un ciclo diario en el litoral de una laguna pampásica
dc.creator.none.fl_str_mv Benítez, Hernán Hugo
Claps, María Cristina
author Benítez, Hernán Hugo
author_facet Benítez, Hernán Hugo
Claps, María Cristina
author_role author
author2 Claps, María Cristina
author2_role author
dc.subject.none.fl_str_mv Ciencias Naturales
Buenos Aires (Argentina)
Zooplancton
distribución espacio-temporal
Laguna Litoral
topic Ciencias Naturales
Buenos Aires (Argentina)
Zooplancton
distribución espacio-temporal
Laguna Litoral
dc.description.none.fl_txt_mv The vertical and horizontal distributions of zooplankton were investigated in the littoral zone of the San Miguel del Monte Lake (Buenos Aires, Argentina) in five occasions with a diel time scale (24 h) in summer. Sixty zooplankton species were recorded. The measured parameters (conductivity, temperature, dissolved oxygen, pH) showed minimal differences among the sampling occasions. Statistically significant horizontal and vertical zooplankton abundance gradients occurred. The majority of the smallbodied zooplankton (ciliates and rotifers) did not show a significant change in the horizontal or vertical distribution. Only Tintinidium fuviatile and Keratella tropica showed a significant avoidance of the surface during midnight, whereas in the same time Keratella americana showed significant aggregating in the littoral sector more distant to the edge. The spatial distribution of large-bodied zooplankton varied according diel scale. The cladocerans (Bosmina huaronensis and Diaphanosoma birgei) exhibited significant changes in horizontal position with the greatest avoidance of shore during midnight. The copepods (Notodiaptomus incompositus and Metacyclops mendocinus) showed a pronounced diel vertical differentiation, and were more abundant at surface at sunset and midnight. The high inorganic turbidity recorded (transparency: 0.35 m) could reduce the risk of predation and for this reason some zooplankters exhibit limited changes of their spatial distribution during the diel cycle.
Instituto de Limnología "Raúl A. Ringuelet"
description The vertical and horizontal distributions of zooplankton were investigated in the littoral zone of the San Miguel del Monte Lake (Buenos Aires, Argentina) in five occasions with a diel time scale (24 h) in summer. Sixty zooplankton species were recorded. The measured parameters (conductivity, temperature, dissolved oxygen, pH) showed minimal differences among the sampling occasions. Statistically significant horizontal and vertical zooplankton abundance gradients occurred. The majority of the smallbodied zooplankton (ciliates and rotifers) did not show a significant change in the horizontal or vertical distribution. Only Tintinidium fuviatile and Keratella tropica showed a significant avoidance of the surface during midnight, whereas in the same time Keratella americana showed significant aggregating in the littoral sector more distant to the edge. The spatial distribution of large-bodied zooplankton varied according diel scale. The cladocerans (Bosmina huaronensis and Diaphanosoma birgei) exhibited significant changes in horizontal position with the greatest avoidance of shore during midnight. The copepods (Notodiaptomus incompositus and Metacyclops mendocinus) showed a pronounced diel vertical differentiation, and were more abundant at surface at sunset and midnight. The high inorganic turbidity recorded (transparency: 0.35 m) could reduce the risk of predation and for this reason some zooplankters exhibit limited changes of their spatial distribution during the diel cycle.
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
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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/10915/68061
url http://sedici.unlp.edu.ar/handle/10915/68061
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
19-31
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
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reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
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repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
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score 13.13397

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