Estudio de migraciones del zooplancton en un lago somero: desarrollo de una nueva metodología a campo

Autores
Benítez, Hernán Hugo; Claps, María Cristina
Año de publicación
2012
Idioma
español castellano
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We investigated the vertical and horizontal distributions of zooplankton in the littoral zone of a pampean shallow lake: Lacombe Lake (Buenos Aires, Argentina) throughout the 24-h day in summer. A new methodology that allows to take multiple samples without disturbance and difficulty was employed for sampling sectors with submerged macrophyte beds. This lake is characterized by the presence of littoral and planktivorous ichthyofauna. Lacombe Lake exhibited high transparency owing to the presence of submerged macrophytes (Myriophyllum quitense). We observed little variation at different depths within the horizontal transects with respect to temperature, dissolved-oxygen concentration, conductivity, and pH and recorded statistically significant (ANOVA) horizontal and vertical zooplankton-abundance gradients. The majority of the small-bodied zooplankton (ciliates and rotifers) evidenced no significant variation in their horizontal or vertical distribution. Littoral cladocerans appear to migrate vertically rather than horizontally, whereas Diaphanosoma birgei exhibited significant changes in its horizontal distribution. The presence of emergent and submerged macrophytes in the littoral zone is not sufficient to promote clear differences in diurnal horizontal zooplankton migration. The differences in the diel fluctuations in particular species may be mostly dependent on specific ecological requirements, environmental conditions, and/or fish predation.
Instituto de Limnología "Raúl A. Ringuelet"
Materia
Ciencias Naturales
lago somero
Zooplancton
macrófitas
Migración
Muestreo
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:10915/68858
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/68858
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repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Estudio de migraciones del zooplancton en un lago somero: desarrollo de una nueva metodología a campoBenítez, Hernán HugoClaps, María CristinaCiencias Naturaleslago someroZooplanctonmacrófitasMigraciónMuestreoWe investigated the vertical and horizontal distributions of zooplankton in the littoral zone of a pampean shallow lake: Lacombe Lake (Buenos Aires, Argentina) throughout the 24-h day in summer. A new methodology that allows to take multiple samples without disturbance and difficulty was employed for sampling sectors with submerged macrophyte beds. This lake is characterized by the presence of littoral and planktivorous ichthyofauna. Lacombe Lake exhibited high transparency owing to the presence of submerged macrophytes (Myriophyllum quitense). We observed little variation at different depths within the horizontal transects with respect to temperature, dissolved-oxygen concentration, conductivity, and pH and recorded statistically significant (ANOVA) horizontal and vertical zooplankton-abundance gradients. The majority of the small-bodied zooplankton (ciliates and rotifers) evidenced no significant variation in their horizontal or vertical distribution. Littoral cladocerans appear to migrate vertically rather than horizontally, whereas Diaphanosoma birgei exhibited significant changes in its horizontal distribution. The presence of emergent and submerged macrophytes in the littoral zone is not sufficient to promote clear differences in diurnal horizontal zooplankton migration. The differences in the diel fluctuations in particular species may be mostly dependent on specific ecological requirements, environmental conditions, and/or fish predation.Instituto de Limnología "Raúl A. Ringuelet"2012info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf29-41http://sedici.unlp.edu.ar/handle/10915/68858spainfo: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:UNLP2025-09-03T10:42:48Zoai:sedici.unlp.edu.ar:10915/68858Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-03 10:42:48.491SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Estudio de migraciones del zooplancton en un lago somero: desarrollo de una nueva metodología a campo
title Estudio de migraciones del zooplancton en un lago somero: desarrollo de una nueva metodología a campo
spellingShingle Estudio de migraciones del zooplancton en un lago somero: desarrollo de una nueva metodología a campo
Benítez, Hernán Hugo
Ciencias Naturales
lago somero
Zooplancton
macrófitas
Migración
Muestreo
title_short Estudio de migraciones del zooplancton en un lago somero: desarrollo de una nueva metodología a campo
title_full Estudio de migraciones del zooplancton en un lago somero: desarrollo de una nueva metodología a campo
title_fullStr Estudio de migraciones del zooplancton en un lago somero: desarrollo de una nueva metodología a campo
title_full_unstemmed Estudio de migraciones del zooplancton en un lago somero: desarrollo de una nueva metodología a campo
title_sort Estudio de migraciones del zooplancton en un lago somero: desarrollo de una nueva metodología a campo
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
lago somero
Zooplancton
macrófitas
Migración
Muestreo
topic Ciencias Naturales
lago somero
Zooplancton
macrófitas
Migración
Muestreo
dc.description.none.fl_txt_mv We investigated the vertical and horizontal distributions of zooplankton in the littoral zone of a pampean shallow lake: Lacombe Lake (Buenos Aires, Argentina) throughout the 24-h day in summer. A new methodology that allows to take multiple samples without disturbance and difficulty was employed for sampling sectors with submerged macrophyte beds. This lake is characterized by the presence of littoral and planktivorous ichthyofauna. Lacombe Lake exhibited high transparency owing to the presence of submerged macrophytes (Myriophyllum quitense). We observed little variation at different depths within the horizontal transects with respect to temperature, dissolved-oxygen concentration, conductivity, and pH and recorded statistically significant (ANOVA) horizontal and vertical zooplankton-abundance gradients. The majority of the small-bodied zooplankton (ciliates and rotifers) evidenced no significant variation in their horizontal or vertical distribution. Littoral cladocerans appear to migrate vertically rather than horizontally, whereas Diaphanosoma birgei exhibited significant changes in its horizontal distribution. The presence of emergent and submerged macrophytes in the littoral zone is not sufficient to promote clear differences in diurnal horizontal zooplankton migration. The differences in the diel fluctuations in particular species may be mostly dependent on specific ecological requirements, environmental conditions, and/or fish predation.
Instituto de Limnología "Raúl A. Ringuelet"
description We investigated the vertical and horizontal distributions of zooplankton in the littoral zone of a pampean shallow lake: Lacombe Lake (Buenos Aires, Argentina) throughout the 24-h day in summer. A new methodology that allows to take multiple samples without disturbance and difficulty was employed for sampling sectors with submerged macrophyte beds. This lake is characterized by the presence of littoral and planktivorous ichthyofauna. Lacombe Lake exhibited high transparency owing to the presence of submerged macrophytes (Myriophyllum quitense). We observed little variation at different depths within the horizontal transects with respect to temperature, dissolved-oxygen concentration, conductivity, and pH and recorded statistically significant (ANOVA) horizontal and vertical zooplankton-abundance gradients. The majority of the small-bodied zooplankton (ciliates and rotifers) evidenced no significant variation in their horizontal or vertical distribution. Littoral cladocerans appear to migrate vertically rather than horizontally, whereas Diaphanosoma birgei exhibited significant changes in its horizontal distribution. The presence of emergent and submerged macrophytes in the littoral zone is not sufficient to promote clear differences in diurnal horizontal zooplankton migration. The differences in the diel fluctuations in particular species may be mostly dependent on specific ecological requirements, environmental conditions, and/or fish predation.
publishDate 2012
dc.date.none.fl_str_mv 2012
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/10915/68858
url http://sedici.unlp.edu.ar/handle/10915/68858
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
29-41
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 13.13397

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