Impact of Extreme Droughts on Fish Assemblages in a Large South American Floodplain River

Autores
Espinola, Luis Alberto; Simōes, Nadson Ressyé; Rabuffetti, Ana Pía; Contreras, Félix Ignacio; Saucedo, Griselda Isabel; Abrial, Elie; Garelo, Nicolás; Stachiotti, Leonardo; Baigun, Claudio Rafael M.; Blettler, Martín César María; Dos Santos, Luciano Neves
Año de publicación
2025
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Increasing anthropogenic pressures and climate change have significantly altered the hydrological dynamics of freshwater ecosystems, particularly in Latin America. The Paraná River in the La Plata Basin has experienced prolonged droughts, leading to reduced hydrological connectivity and habitat loss, which have severely impacted fish assemblages and reproduction of several species. This study analysed changes in fish assemblage structure during a prolonged hydrological drought (2021–2022) compared with regular hydrological pulse periods (2010 and 2016) in the middle Paraná River floodplain. The results show that prolonged droughts have disrupted typical temporal dynamics, restructured the fish assemblage and particularly affected the abundance and dominance of large migratory species, which account for many key ecosystem services and are the major target of local fisheries, with only sedentary and short-distance migratory species remaining dominant. Because climate models predict more frequent and severe droughts in the future, our study shows that prolonged hydrological droughts are transforming river-floodplain systems by reducing the frequency and intensity of pulse and flow pulses. This decline in hydrological variability leads to a reduced availability and diversity of habitats for fish nurseries, negatively impacting reproductive success and even affecting migratory signals essential for reproduction. As a result, species abundance and community composition are being significantly reshaped. An ecohydrological approach is recommended for sustainable water management, integrating adaptive strategies to mitigate the impacts of abnormal hydrological events, monitor ichthyofauna and maintain ecosystem services such as fisheries.
EEA Corrientes
Fil: Espínola, Luis Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto Nacional de Limnología (INALI). Laboratorio de Hidrogeología; Argentina. Universidad Nacional del Litoral. Instituto Nacional de Limnología (INALI). Laboratorio de Hidrogeología; Argentina
Fil: Simōes, Nadson Ressyé. Universidade Federal do Sul da Bahia (UFSB). Centro de Formação em Ciências Agroflorestais; Brasil
Fil: Rabuffetti, Ana Pía. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto Nacional de Limnología (INALI). Laboratorio de Hidrogeología; Argentina. Universidad Nacional del Litoral. Instituto Nacional de Limnología (INALI). Laboratorio de Hidrogeología; Argentina
Fil: Contreras, Félix Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Ecología Aplicada del Litoral; Argentina. Universidad Nacional del Nordeste. Centro de Ecología Aplicada del Litoral; Argentina
Fil: Saucedo, Griselda Isabel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Corrientes; Argentina
Fil: Abrial, Elie. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto Nacional de Limnología (INALI). Laboratorio de Hidrogeología; Argentina. Universidad Nacional del Litoral. Instituto Nacional de Limnología (INALI). Laboratorio de Hidrogeología; Argentina
Fil: Garelo, Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto Nacional de Limnología (INALI). Laboratorio de Hidrogeología; Argentina. Universidad Nacional del Litoral. Instituto Nacional de Limnología (INALI). Laboratorio de Hidrogeología; Argentina
Fil: Stachiotti, Leonardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto Nacional de Limnología (INALI). Laboratorio de Hidrogeología; Argentina. Universidad Nacional del Litoral. Instituto Nacional de Limnología (INALI). Laboratorio de Hidrogeología; Argentina
Fil: Baigun, Claudio Rafael M. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigación e Ingeniería Ambiental. Laboratorio de Ecología Pesquera Aplicada; Argentina. Universidad Nacional de San Martín. Instituto de Investigación e Ingeniería Ambiental. Laboratorio de Ecología Pesquera Aplicada; Argentina
Fil: Blettler, Martín César María. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigación y Desarrollo en Bioingeniería y Bioinformática; Argentina. Universidad Nacional de Entre Ríos. Instituto de Investigación y Desarrollo en Bioingeniería y Bioinformática; Argentina
Fil: Dos Santos, Luciano Neves. Universidade Federal do Estado do Rio de Janeiro. Laboratorio de Ictiología Teórica e Aplicada (LICTA); Brasil
Fuente
Ecohydrology 18 (5) : e70062. (July‐August 2025)
Materia
Sequía
Ecohidrología
Cambio Climático
Drought
Ecohydrology
Climate Change
Fish
Pescado
Nivel de accesibilidad
acceso restringido
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
oai:localhost:20.500.12123/23086
Acceder
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oai_identifier_str oai:localhost:20.500.12123/23086
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spelling Impact of Extreme Droughts on Fish Assemblages in a Large South American Floodplain RiverEspinola, Luis AlbertoSimōes, Nadson RessyéRabuffetti, Ana PíaContreras, Félix IgnacioSaucedo, Griselda IsabelAbrial, ElieGarelo, NicolásStachiotti, LeonardoBaigun, Claudio Rafael M.Blettler, Martín César MaríaDos Santos, Luciano NevesSequíaEcohidrologíaCambio ClimáticoDroughtEcohydrologyClimate ChangeFishPescadoIncreasing anthropogenic pressures and climate change have significantly altered the hydrological dynamics of freshwater ecosystems, particularly in Latin America. The Paraná River in the La Plata Basin has experienced prolonged droughts, leading to reduced hydrological connectivity and habitat loss, which have severely impacted fish assemblages and reproduction of several species. This study analysed changes in fish assemblage structure during a prolonged hydrological drought (2021–2022) compared with regular hydrological pulse periods (2010 and 2016) in the middle Paraná River floodplain. The results show that prolonged droughts have disrupted typical temporal dynamics, restructured the fish assemblage and particularly affected the abundance and dominance of large migratory species, which account for many key ecosystem services and are the major target of local fisheries, with only sedentary and short-distance migratory species remaining dominant. Because climate models predict more frequent and severe droughts in the future, our study shows that prolonged hydrological droughts are transforming river-floodplain systems by reducing the frequency and intensity of pulse and flow pulses. This decline in hydrological variability leads to a reduced availability and diversity of habitats for fish nurseries, negatively impacting reproductive success and even affecting migratory signals essential for reproduction. As a result, species abundance and community composition are being significantly reshaped. An ecohydrological approach is recommended for sustainable water management, integrating adaptive strategies to mitigate the impacts of abnormal hydrological events, monitor ichthyofauna and maintain ecosystem services such as fisheries.EEA CorrientesFil: Espínola, Luis Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto Nacional de Limnología (INALI). Laboratorio de Hidrogeología; Argentina. Universidad Nacional del Litoral. Instituto Nacional de Limnología (INALI). Laboratorio de Hidrogeología; ArgentinaFil: Simōes, Nadson Ressyé. Universidade Federal do Sul da Bahia (UFSB). Centro de Formação em Ciências Agroflorestais; BrasilFil: Rabuffetti, Ana Pía. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto Nacional de Limnología (INALI). Laboratorio de Hidrogeología; Argentina. Universidad Nacional del Litoral. Instituto Nacional de Limnología (INALI). Laboratorio de Hidrogeología; ArgentinaFil: Contreras, Félix Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Ecología Aplicada del Litoral; Argentina. Universidad Nacional del Nordeste. Centro de Ecología Aplicada del Litoral; ArgentinaFil: Saucedo, Griselda Isabel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Corrientes; ArgentinaFil: Abrial, Elie. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto Nacional de Limnología (INALI). Laboratorio de Hidrogeología; Argentina. Universidad Nacional del Litoral. Instituto Nacional de Limnología (INALI). Laboratorio de Hidrogeología; ArgentinaFil: Garelo, Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto Nacional de Limnología (INALI). Laboratorio de Hidrogeología; Argentina. Universidad Nacional del Litoral. Instituto Nacional de Limnología (INALI). Laboratorio de Hidrogeología; ArgentinaFil: Stachiotti, Leonardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto Nacional de Limnología (INALI). Laboratorio de Hidrogeología; Argentina. Universidad Nacional del Litoral. Instituto Nacional de Limnología (INALI). Laboratorio de Hidrogeología; ArgentinaFil: Baigun, Claudio Rafael M. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigación e Ingeniería Ambiental. Laboratorio de Ecología Pesquera Aplicada; Argentina. Universidad Nacional de San Martín. Instituto de Investigación e Ingeniería Ambiental. Laboratorio de Ecología Pesquera Aplicada; ArgentinaFil: Blettler, Martín César María. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigación y Desarrollo en Bioingeniería y Bioinformática; Argentina. Universidad Nacional de Entre Ríos. Instituto de Investigación y Desarrollo en Bioingeniería y Bioinformática; ArgentinaFil: Dos Santos, Luciano Neves. Universidade Federal do Estado do Rio de Janeiro. Laboratorio de Ictiología Teórica e Aplicada (LICTA); BrasilWiley2025-07-18T14:47:21Z2025-07-18T14:47:21Z2025-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/23086https://onlinelibrary.wiley.com/doi/10.1002/eco.700621936-05841936-0592https://doi.org/10.1002/eco.70062Ecohydrology 18 (5) : e70062. (July‐August 2025)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo:eu-repo/semantics/restrictedAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)2025-09-29T13:47:25Zoai:localhost:20.500.12123/23086instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2025-09-29 13:47:25.532INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv Impact of Extreme Droughts on Fish Assemblages in a Large South American Floodplain River
title Impact of Extreme Droughts on Fish Assemblages in a Large South American Floodplain River
spellingShingle Impact of Extreme Droughts on Fish Assemblages in a Large South American Floodplain River
Espinola, Luis Alberto
Sequía
Ecohidrología
Cambio Climático
Drought
Ecohydrology
Climate Change
Fish
Pescado
title_short Impact of Extreme Droughts on Fish Assemblages in a Large South American Floodplain River
title_full Impact of Extreme Droughts on Fish Assemblages in a Large South American Floodplain River
title_fullStr Impact of Extreme Droughts on Fish Assemblages in a Large South American Floodplain River
title_full_unstemmed Impact of Extreme Droughts on Fish Assemblages in a Large South American Floodplain River
title_sort Impact of Extreme Droughts on Fish Assemblages in a Large South American Floodplain River
dc.creator.none.fl_str_mv Espinola, Luis Alberto
Simōes, Nadson Ressyé
Rabuffetti, Ana Pía
Contreras, Félix Ignacio
Saucedo, Griselda Isabel
Abrial, Elie
Garelo, Nicolás
Stachiotti, Leonardo
Baigun, Claudio Rafael M.
Blettler, Martín César María
Dos Santos, Luciano Neves
author Espinola, Luis Alberto
author_facet Espinola, Luis Alberto
Simōes, Nadson Ressyé
Rabuffetti, Ana Pía
Contreras, Félix Ignacio
Saucedo, Griselda Isabel
Abrial, Elie
Garelo, Nicolás
Stachiotti, Leonardo
Baigun, Claudio Rafael M.
Blettler, Martín César María
Dos Santos, Luciano Neves
author_role author
author2 Simōes, Nadson Ressyé
Rabuffetti, Ana Pía
Contreras, Félix Ignacio
Saucedo, Griselda Isabel
Abrial, Elie
Garelo, Nicolás
Stachiotti, Leonardo
Baigun, Claudio Rafael M.
Blettler, Martín César María
Dos Santos, Luciano Neves
author2_role author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Sequía
Ecohidrología
Cambio Climático
Drought
Ecohydrology
Climate Change
Fish
Pescado
topic Sequía
Ecohidrología
Cambio Climático
Drought
Ecohydrology
Climate Change
Fish
Pescado
dc.description.none.fl_txt_mv Increasing anthropogenic pressures and climate change have significantly altered the hydrological dynamics of freshwater ecosystems, particularly in Latin America. The Paraná River in the La Plata Basin has experienced prolonged droughts, leading to reduced hydrological connectivity and habitat loss, which have severely impacted fish assemblages and reproduction of several species. This study analysed changes in fish assemblage structure during a prolonged hydrological drought (2021–2022) compared with regular hydrological pulse periods (2010 and 2016) in the middle Paraná River floodplain. The results show that prolonged droughts have disrupted typical temporal dynamics, restructured the fish assemblage and particularly affected the abundance and dominance of large migratory species, which account for many key ecosystem services and are the major target of local fisheries, with only sedentary and short-distance migratory species remaining dominant. Because climate models predict more frequent and severe droughts in the future, our study shows that prolonged hydrological droughts are transforming river-floodplain systems by reducing the frequency and intensity of pulse and flow pulses. This decline in hydrological variability leads to a reduced availability and diversity of habitats for fish nurseries, negatively impacting reproductive success and even affecting migratory signals essential for reproduction. As a result, species abundance and community composition are being significantly reshaped. An ecohydrological approach is recommended for sustainable water management, integrating adaptive strategies to mitigate the impacts of abnormal hydrological events, monitor ichthyofauna and maintain ecosystem services such as fisheries.
EEA Corrientes
Fil: Espínola, Luis Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto Nacional de Limnología (INALI). Laboratorio de Hidrogeología; Argentina. Universidad Nacional del Litoral. Instituto Nacional de Limnología (INALI). Laboratorio de Hidrogeología; Argentina
Fil: Simōes, Nadson Ressyé. Universidade Federal do Sul da Bahia (UFSB). Centro de Formação em Ciências Agroflorestais; Brasil
Fil: Rabuffetti, Ana Pía. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto Nacional de Limnología (INALI). Laboratorio de Hidrogeología; Argentina. Universidad Nacional del Litoral. Instituto Nacional de Limnología (INALI). Laboratorio de Hidrogeología; Argentina
Fil: Contreras, Félix Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Ecología Aplicada del Litoral; Argentina. Universidad Nacional del Nordeste. Centro de Ecología Aplicada del Litoral; Argentina
Fil: Saucedo, Griselda Isabel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Corrientes; Argentina
Fil: Abrial, Elie. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto Nacional de Limnología (INALI). Laboratorio de Hidrogeología; Argentina. Universidad Nacional del Litoral. Instituto Nacional de Limnología (INALI). Laboratorio de Hidrogeología; Argentina
Fil: Garelo, Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto Nacional de Limnología (INALI). Laboratorio de Hidrogeología; Argentina. Universidad Nacional del Litoral. Instituto Nacional de Limnología (INALI). Laboratorio de Hidrogeología; Argentina
Fil: Stachiotti, Leonardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto Nacional de Limnología (INALI). Laboratorio de Hidrogeología; Argentina. Universidad Nacional del Litoral. Instituto Nacional de Limnología (INALI). Laboratorio de Hidrogeología; Argentina
Fil: Baigun, Claudio Rafael M. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigación e Ingeniería Ambiental. Laboratorio de Ecología Pesquera Aplicada; Argentina. Universidad Nacional de San Martín. Instituto de Investigación e Ingeniería Ambiental. Laboratorio de Ecología Pesquera Aplicada; Argentina
Fil: Blettler, Martín César María. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigación y Desarrollo en Bioingeniería y Bioinformática; Argentina. Universidad Nacional de Entre Ríos. Instituto de Investigación y Desarrollo en Bioingeniería y Bioinformática; Argentina
Fil: Dos Santos, Luciano Neves. Universidade Federal do Estado do Rio de Janeiro. Laboratorio de Ictiología Teórica e Aplicada (LICTA); Brasil
description Increasing anthropogenic pressures and climate change have significantly altered the hydrological dynamics of freshwater ecosystems, particularly in Latin America. The Paraná River in the La Plata Basin has experienced prolonged droughts, leading to reduced hydrological connectivity and habitat loss, which have severely impacted fish assemblages and reproduction of several species. This study analysed changes in fish assemblage structure during a prolonged hydrological drought (2021–2022) compared with regular hydrological pulse periods (2010 and 2016) in the middle Paraná River floodplain. The results show that prolonged droughts have disrupted typical temporal dynamics, restructured the fish assemblage and particularly affected the abundance and dominance of large migratory species, which account for many key ecosystem services and are the major target of local fisheries, with only sedentary and short-distance migratory species remaining dominant. Because climate models predict more frequent and severe droughts in the future, our study shows that prolonged hydrological droughts are transforming river-floodplain systems by reducing the frequency and intensity of pulse and flow pulses. This decline in hydrological variability leads to a reduced availability and diversity of habitats for fish nurseries, negatively impacting reproductive success and even affecting migratory signals essential for reproduction. As a result, species abundance and community composition are being significantly reshaped. An ecohydrological approach is recommended for sustainable water management, integrating adaptive strategies to mitigate the impacts of abnormal hydrological events, monitor ichthyofauna and maintain ecosystem services such as fisheries.
publishDate 2025
dc.date.none.fl_str_mv 2025-07-18T14:47:21Z
2025-07-18T14:47:21Z
2025-08
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
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info:ar-repo/semantics/articulo
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status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/20.500.12123/23086
https://onlinelibrary.wiley.com/doi/10.1002/eco.70062
1936-0584
1936-0592
https://doi.org/10.1002/eco.70062
url http://hdl.handle.net/20.500.12123/23086
https://onlinelibrary.wiley.com/doi/10.1002/eco.70062
https://doi.org/10.1002/eco.70062
identifier_str_mv 1936-0584
1936-0592
dc.language.none.fl_str_mv eng
language eng
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Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Wiley
publisher.none.fl_str_mv Wiley
dc.source.none.fl_str_mv Ecohydrology 18 (5) : e70062. (July‐August 2025)
reponame:INTA Digital (INTA)
instname:Instituto Nacional de Tecnología Agropecuaria
reponame_str INTA Digital (INTA)
collection INTA Digital (INTA)
instname_str Instituto Nacional de Tecnología Agropecuaria
repository.name.fl_str_mv INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuaria
repository.mail.fl_str_mv tripaldi.nicolas@inta.gob.ar
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