Effects of decadal changes in the hydrological regime of the middle reach of the Paraná River (Argentina) on fish densities

Autores
Espínola, Luis Alberto; Amsler, Mario Luis; Paira, Aldo Raul; Drago, Edmundo Carlos E.; Blettler, Martin Cesar Maria; Agostinho, Angelo A.
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Changes in fish densities recorded over 14 years (1996-2009) were studied for effects of long-term variation of the hydrologic regime. We collected field data with an echo sounder in scour holes of minor channels draining an area of floodplain in the middle reach of the Paraná River. Fish densities in 2000-2009 were significantly lower than in the previous decade. The decrease was associated with a marked reduction of water levels, flood magnitudes and connectivity of channels with the nearby floodplain lakes. This distortion of the flood pulse likely had an effect on the life history strategies of the fishes. The effects of damming in the upstream basin and other man-made perturbations are minor in the middle reach. However, the decadal alterations of regime are intimately linked to climate fluctuations in the Paraná River basin during the past century. Tendencies of observed fish densities are similar to results reported in literature on the influence on fishes for similar long-term alterations of the flood regime in river flood plain systems.
Fil: Espínola, Luis Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; Argentina
Fil: Amsler, Mario Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; Argentina
Fil: Paira, Aldo Raul. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; Argentina
Fil: Drago, Edmundo Carlos E.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; Argentina
Fil: Blettler, Martin Cesar Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; Argentina
Fil: Agostinho, Angelo A.. Universidade Estadual de Maringá; Brasil
Materia
Climate Fluctuations
Echo Sounding
Fish Density
Flood Pulse
Scour Holes
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/22762
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/22762
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Effects of decadal changes in the hydrological regime of the middle reach of the Paraná River (Argentina) on fish densitiesEspínola, Luis AlbertoAmsler, Mario LuisPaira, Aldo RaulDrago, Edmundo Carlos E.Blettler, Martin Cesar MariaAgostinho, Angelo A.Climate FluctuationsEcho SoundingFish DensityFlood PulseScour Holeshttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1https://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Changes in fish densities recorded over 14 years (1996-2009) were studied for effects of long-term variation of the hydrologic regime. We collected field data with an echo sounder in scour holes of minor channels draining an area of floodplain in the middle reach of the Paraná River. Fish densities in 2000-2009 were significantly lower than in the previous decade. The decrease was associated with a marked reduction of water levels, flood magnitudes and connectivity of channels with the nearby floodplain lakes. This distortion of the flood pulse likely had an effect on the life history strategies of the fishes. The effects of damming in the upstream basin and other man-made perturbations are minor in the middle reach. However, the decadal alterations of regime are intimately linked to climate fluctuations in the Paraná River basin during the past century. Tendencies of observed fish densities are similar to results reported in literature on the influence on fishes for similar long-term alterations of the flood regime in river flood plain systems.Fil: Espínola, Luis Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; ArgentinaFil: Amsler, Mario Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; ArgentinaFil: Paira, Aldo Raul. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; ArgentinaFil: Drago, Edmundo Carlos E.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; ArgentinaFil: Blettler, Martin Cesar Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; ArgentinaFil: Agostinho, Angelo A.. Universidade Estadual de Maringá; BrasilSpringer2014-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/22762Espínola, Luis Alberto; Amsler, Mario Luis; Paira, Aldo Raul; Drago, Edmundo Carlos E.; Blettler, Martin Cesar Maria; et al.; Effects of decadal changes in the hydrological regime of the middle reach of the Paraná River (Argentina) on fish densities; Springer; Environmental Biology of Fishes; 97; 7; 7-2014; 757-7710378-19091573-5133CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1007/s10641-013-0177-8info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs10641-013-0177-8info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:26:31Zoai:ri.conicet.gov.ar:11336/22762instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:26:31.699CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Effects of decadal changes in the hydrological regime of the middle reach of the Paraná River (Argentina) on fish densities
title Effects of decadal changes in the hydrological regime of the middle reach of the Paraná River (Argentina) on fish densities
spellingShingle Effects of decadal changes in the hydrological regime of the middle reach of the Paraná River (Argentina) on fish densities
Espínola, Luis Alberto
Climate Fluctuations
Echo Sounding
Fish Density
Flood Pulse
Scour Holes
title_short Effects of decadal changes in the hydrological regime of the middle reach of the Paraná River (Argentina) on fish densities
title_full Effects of decadal changes in the hydrological regime of the middle reach of the Paraná River (Argentina) on fish densities
title_fullStr Effects of decadal changes in the hydrological regime of the middle reach of the Paraná River (Argentina) on fish densities
title_full_unstemmed Effects of decadal changes in the hydrological regime of the middle reach of the Paraná River (Argentina) on fish densities
title_sort Effects of decadal changes in the hydrological regime of the middle reach of the Paraná River (Argentina) on fish densities
dc.creator.none.fl_str_mv Espínola, Luis Alberto
Amsler, Mario Luis
Paira, Aldo Raul
Drago, Edmundo Carlos E.
Blettler, Martin Cesar Maria
Agostinho, Angelo A.
author Espínola, Luis Alberto
author_facet Espínola, Luis Alberto
Amsler, Mario Luis
Paira, Aldo Raul
Drago, Edmundo Carlos E.
Blettler, Martin Cesar Maria
Agostinho, Angelo A.
author_role author
author2 Amsler, Mario Luis
Paira, Aldo Raul
Drago, Edmundo Carlos E.
Blettler, Martin Cesar Maria
Agostinho, Angelo A.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Climate Fluctuations
Echo Sounding
Fish Density
Flood Pulse
Scour Holes
topic Climate Fluctuations
Echo Sounding
Fish Density
Flood Pulse
Scour Holes
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Changes in fish densities recorded over 14 years (1996-2009) were studied for effects of long-term variation of the hydrologic regime. We collected field data with an echo sounder in scour holes of minor channels draining an area of floodplain in the middle reach of the Paraná River. Fish densities in 2000-2009 were significantly lower than in the previous decade. The decrease was associated with a marked reduction of water levels, flood magnitudes and connectivity of channels with the nearby floodplain lakes. This distortion of the flood pulse likely had an effect on the life history strategies of the fishes. The effects of damming in the upstream basin and other man-made perturbations are minor in the middle reach. However, the decadal alterations of regime are intimately linked to climate fluctuations in the Paraná River basin during the past century. Tendencies of observed fish densities are similar to results reported in literature on the influence on fishes for similar long-term alterations of the flood regime in river flood plain systems.
Fil: Espínola, Luis Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; Argentina
Fil: Amsler, Mario Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; Argentina
Fil: Paira, Aldo Raul. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; Argentina
Fil: Drago, Edmundo Carlos E.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; Argentina
Fil: Blettler, Martin Cesar Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto Nacional de Limnología. Universidad Nacional del Litoral. Instituto Nacional de Limnología; Argentina
Fil: Agostinho, Angelo A.. Universidade Estadual de Maringá; Brasil
description Changes in fish densities recorded over 14 years (1996-2009) were studied for effects of long-term variation of the hydrologic regime. We collected field data with an echo sounder in scour holes of minor channels draining an area of floodplain in the middle reach of the Paraná River. Fish densities in 2000-2009 were significantly lower than in the previous decade. The decrease was associated with a marked reduction of water levels, flood magnitudes and connectivity of channels with the nearby floodplain lakes. This distortion of the flood pulse likely had an effect on the life history strategies of the fishes. The effects of damming in the upstream basin and other man-made perturbations are minor in the middle reach. However, the decadal alterations of regime are intimately linked to climate fluctuations in the Paraná River basin during the past century. Tendencies of observed fish densities are similar to results reported in literature on the influence on fishes for similar long-term alterations of the flood regime in river flood plain systems.
publishDate 2014
dc.date.none.fl_str_mv 2014-07
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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://hdl.handle.net/11336/22762
Espínola, Luis Alberto; Amsler, Mario Luis; Paira, Aldo Raul; Drago, Edmundo Carlos E.; Blettler, Martin Cesar Maria; et al.; Effects of decadal changes in the hydrological regime of the middle reach of the Paraná River (Argentina) on fish densities; Springer; Environmental Biology of Fishes; 97; 7; 7-2014; 757-771
0378-1909
1573-5133
CONICET Digital
CONICET
url http://hdl.handle.net/11336/22762
identifier_str_mv Espínola, Luis Alberto; Amsler, Mario Luis; Paira, Aldo Raul; Drago, Edmundo Carlos E.; Blettler, Martin Cesar Maria; et al.; Effects of decadal changes in the hydrological regime of the middle reach of the Paraná River (Argentina) on fish densities; Springer; Environmental Biology of Fishes; 97; 7; 7-2014; 757-771
0378-1909
1573-5133
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1007/s10641-013-0177-8
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs10641-013-0177-8
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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