Climatic seasonality, hydrological variability, and geomorphology shape fish assemblage structure in a subtropical floodplain

Autores
Scarabotti, Pablo Augusto; Demonte, Luisina Delma; Pouilly, Marc
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We applied a multiscale approach to understand the patterns of longitudinal, lateral, and temporal variability in fish assemblage structure of a large floodplain river and explored their relationships with climatic seasonality, hydrological variability, and floodplain geomorphology. We studied the fish assemblage structure of 35 connected lakes along a 600-km section of the Paraná River over 5 y. Longitudinal changes in fish assemblage structure were associated with a latitudinal climatic gradient, whereas temporal changes were associated with climatic seasonality and hydrological variability. Longitudinal and seasonal changes in assemblage structure were probably based on different thermal preferences of species that migrate seasonally along the main river axis. Extraordinary floods in summer promoted downstream dispersal of several species, which increased similarity between downstream and upstream regions. Thermal seasonality of this subtropical system was a strong factor driving temporal changes in assemblage structure, and the effects of the hydrological regime largely depended on flood pulses coincident with periods of warmer temperatures. Fish assemblages varied secondarily along a lateral gradient represented by types of geomorphic units distributed in the floodplain. The geomorphic units generated patchy environmental heterogeneity at the landscape scale that resulted in discontinuous patterns of fish assemblage structure. Assemblage composition was more similar among lakes belonging to similar geomorphic units but situated at geographically distant regions than among lakes belonging to different geomorphic units situated in the same region. Therefore, patterns in fish assemblage variation at regional and landscape scales appear to be determined largely by the dispersal and selection of suitable habitats by fish across the hierarchy of spatial and temporal scales.
Fil: Scarabotti, Pablo Augusto. 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: Demonte, Luisina Delma. Provincia de Santa Fe. Ministerio de Agricultura y Ganaderia; Argentina
Fil: Pouilly, Marc. Museum National D'histoire Naturelle. Institut de Recherche Pour Le Developpment; Francia
Materia
flood pulse
temperature
dispersal
neotropical fish
community ecology
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:11336/63809
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Climatic seasonality, hydrological variability, and geomorphology shape fish assemblage structure in a subtropical floodplainScarabotti, Pablo AugustoDemonte, Luisina DelmaPouilly, Marcflood pulsetemperaturedispersalneotropical fishcommunity ecologyhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1We applied a multiscale approach to understand the patterns of longitudinal, lateral, and temporal variability in fish assemblage structure of a large floodplain river and explored their relationships with climatic seasonality, hydrological variability, and floodplain geomorphology. We studied the fish assemblage structure of 35 connected lakes along a 600-km section of the Paraná River over 5 y. Longitudinal changes in fish assemblage structure were associated with a latitudinal climatic gradient, whereas temporal changes were associated with climatic seasonality and hydrological variability. Longitudinal and seasonal changes in assemblage structure were probably based on different thermal preferences of species that migrate seasonally along the main river axis. Extraordinary floods in summer promoted downstream dispersal of several species, which increased similarity between downstream and upstream regions. Thermal seasonality of this subtropical system was a strong factor driving temporal changes in assemblage structure, and the effects of the hydrological regime largely depended on flood pulses coincident with periods of warmer temperatures. Fish assemblages varied secondarily along a lateral gradient represented by types of geomorphic units distributed in the floodplain. The geomorphic units generated patchy environmental heterogeneity at the landscape scale that resulted in discontinuous patterns of fish assemblage structure. Assemblage composition was more similar among lakes belonging to similar geomorphic units but situated at geographically distant regions than among lakes belonging to different geomorphic units situated in the same region. Therefore, patterns in fish assemblage variation at regional and landscape scales appear to be determined largely by the dispersal and selection of suitable habitats by fish across the hierarchy of spatial and temporal scales.Fil: Scarabotti, Pablo Augusto. 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: Demonte, Luisina Delma. Provincia de Santa Fe. Ministerio de Agricultura y Ganaderia; ArgentinaFil: Pouilly, Marc. Museum National D'histoire Naturelle. Institut de Recherche Pour Le Developpment; FranciaUniversity of Chicago Press2017-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/63809Scarabotti, Pablo Augusto; Demonte, Luisina Delma; Pouilly, Marc; Climatic seasonality, hydrological variability, and geomorphology shape fish assemblage structure in a subtropical floodplain; University of Chicago Press; Freshwater Science; 36; 3; 9-2017; 653-6682161-9565CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.journals.uchicago.edu/toc/fws/currentinfo:eu-repo/semantics/altIdentifier/doi/10.1086/693441info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:07:34Zoai:ri.conicet.gov.ar:11336/63809instacron: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 10:07:34.74CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Climatic seasonality, hydrological variability, and geomorphology shape fish assemblage structure in a subtropical floodplain
title Climatic seasonality, hydrological variability, and geomorphology shape fish assemblage structure in a subtropical floodplain
spellingShingle Climatic seasonality, hydrological variability, and geomorphology shape fish assemblage structure in a subtropical floodplain
Scarabotti, Pablo Augusto
flood pulse
temperature
dispersal
neotropical fish
community ecology
title_short Climatic seasonality, hydrological variability, and geomorphology shape fish assemblage structure in a subtropical floodplain
title_full Climatic seasonality, hydrological variability, and geomorphology shape fish assemblage structure in a subtropical floodplain
title_fullStr Climatic seasonality, hydrological variability, and geomorphology shape fish assemblage structure in a subtropical floodplain
title_full_unstemmed Climatic seasonality, hydrological variability, and geomorphology shape fish assemblage structure in a subtropical floodplain
title_sort Climatic seasonality, hydrological variability, and geomorphology shape fish assemblage structure in a subtropical floodplain
dc.creator.none.fl_str_mv Scarabotti, Pablo Augusto
Demonte, Luisina Delma
Pouilly, Marc
author Scarabotti, Pablo Augusto
author_facet Scarabotti, Pablo Augusto
Demonte, Luisina Delma
Pouilly, Marc
author_role author
author2 Demonte, Luisina Delma
Pouilly, Marc
author2_role author
author
dc.subject.none.fl_str_mv flood pulse
temperature
dispersal
neotropical fish
community ecology
topic flood pulse
temperature
dispersal
neotropical fish
community ecology
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We applied a multiscale approach to understand the patterns of longitudinal, lateral, and temporal variability in fish assemblage structure of a large floodplain river and explored their relationships with climatic seasonality, hydrological variability, and floodplain geomorphology. We studied the fish assemblage structure of 35 connected lakes along a 600-km section of the Paraná River over 5 y. Longitudinal changes in fish assemblage structure were associated with a latitudinal climatic gradient, whereas temporal changes were associated with climatic seasonality and hydrological variability. Longitudinal and seasonal changes in assemblage structure were probably based on different thermal preferences of species that migrate seasonally along the main river axis. Extraordinary floods in summer promoted downstream dispersal of several species, which increased similarity between downstream and upstream regions. Thermal seasonality of this subtropical system was a strong factor driving temporal changes in assemblage structure, and the effects of the hydrological regime largely depended on flood pulses coincident with periods of warmer temperatures. Fish assemblages varied secondarily along a lateral gradient represented by types of geomorphic units distributed in the floodplain. The geomorphic units generated patchy environmental heterogeneity at the landscape scale that resulted in discontinuous patterns of fish assemblage structure. Assemblage composition was more similar among lakes belonging to similar geomorphic units but situated at geographically distant regions than among lakes belonging to different geomorphic units situated in the same region. Therefore, patterns in fish assemblage variation at regional and landscape scales appear to be determined largely by the dispersal and selection of suitable habitats by fish across the hierarchy of spatial and temporal scales.
Fil: Scarabotti, Pablo Augusto. 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: Demonte, Luisina Delma. Provincia de Santa Fe. Ministerio de Agricultura y Ganaderia; Argentina
Fil: Pouilly, Marc. Museum National D'histoire Naturelle. Institut de Recherche Pour Le Developpment; Francia
description We applied a multiscale approach to understand the patterns of longitudinal, lateral, and temporal variability in fish assemblage structure of a large floodplain river and explored their relationships with climatic seasonality, hydrological variability, and floodplain geomorphology. We studied the fish assemblage structure of 35 connected lakes along a 600-km section of the Paraná River over 5 y. Longitudinal changes in fish assemblage structure were associated with a latitudinal climatic gradient, whereas temporal changes were associated with climatic seasonality and hydrological variability. Longitudinal and seasonal changes in assemblage structure were probably based on different thermal preferences of species that migrate seasonally along the main river axis. Extraordinary floods in summer promoted downstream dispersal of several species, which increased similarity between downstream and upstream regions. Thermal seasonality of this subtropical system was a strong factor driving temporal changes in assemblage structure, and the effects of the hydrological regime largely depended on flood pulses coincident with periods of warmer temperatures. Fish assemblages varied secondarily along a lateral gradient represented by types of geomorphic units distributed in the floodplain. The geomorphic units generated patchy environmental heterogeneity at the landscape scale that resulted in discontinuous patterns of fish assemblage structure. Assemblage composition was more similar among lakes belonging to similar geomorphic units but situated at geographically distant regions than among lakes belonging to different geomorphic units situated in the same region. Therefore, patterns in fish assemblage variation at regional and landscape scales appear to be determined largely by the dispersal and selection of suitable habitats by fish across the hierarchy of spatial and temporal scales.
publishDate 2017
dc.date.none.fl_str_mv 2017-09
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/11336/63809
Scarabotti, Pablo Augusto; Demonte, Luisina Delma; Pouilly, Marc; Climatic seasonality, hydrological variability, and geomorphology shape fish assemblage structure in a subtropical floodplain; University of Chicago Press; Freshwater Science; 36; 3; 9-2017; 653-668
2161-9565
CONICET Digital
CONICET
url http://hdl.handle.net/11336/63809
identifier_str_mv Scarabotti, Pablo Augusto; Demonte, Luisina Delma; Pouilly, Marc; Climatic seasonality, hydrological variability, and geomorphology shape fish assemblage structure in a subtropical floodplain; University of Chicago Press; Freshwater Science; 36; 3; 9-2017; 653-668
2161-9565
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.journals.uchicago.edu/toc/fws/current
info:eu-repo/semantics/altIdentifier/doi/10.1086/693441
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 University of Chicago Press
publisher.none.fl_str_mv University of Chicago Press
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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