Dredging and sediment discharge in a river with floodplain. Physicochemical and microbiological effects in Paraná river

Autores
Gonzalez, Maria Josefina; Gonzalez, Stella Maris; Paira, Aldo Raul; Collins, Pablo
Año de publicación
2025
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Alterations caused by human activities in the environment, such as dredging, modify the physicochemical conditions and affect the habitat. Maintenance dredging that allows large vessels access to inland ports is a recurring disruptive action. The study aimed to evaluate, during a maintenance dredging operation in a port area of the Paraná River, the modifications in the structure of the river, the presence of contaminants and bacterial organisms. The effects caused during the operation of a suction dredge in a South America river under two temporal conditions were analyzed: i) the short and medium-term effects on the physicochemical variables, and ii) the immediate effects on the physicochemical variables and the abundance of bacterioplankton. The variables measured in sediment and water samples were limnological parameters (e.g. conductivity, pH, dissolved oxygen, among others), heavy metal concentration, presence of biocides, hydrocarbon molecules, nutrients, sediment granulometry, Escherichia coli, Enterococcus, total coliforms, and heterotrophic bacteria. Some physicochemical variables increased in the water column immediately after the water mass passed through the operating dredge, including sediment resuspension. The parameter changes were transient, as there were no significant increases in the variables downstream of the dredge during dredging and discharge operations or after dredging work. Some metal concentrations increased in the sediment and water column. Bacteria increased during dredging and more after rainfall events. Then, at the end of the dredging, the bacteria concentrations decreased to previous values. The possible effects of dredging disturbance were of the same order or less than those of natural ones, i.e. rainfall. Sixty days after the dredging work was completed, the system was back to normal both in the dredged and discharge areas.
EEA Rafaela
Fil: Gutierrez, Maria Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto Nacional de Limnología (INALI); Argentina
Fil: Gutierrez, Maria Florencia. Universidad Nacional del Litoral. Instituto Nacional de Limnología (INALI); Argentina
Fil: Gonzalez, Stella Maris. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto Nacional de Limnología (INALI); Argentina
Fil: Gonzalez, Stella Maris. Universidad Nacional del Litoral. Instituto Nacional de Limnología (INALI); Argentina
Fil: Paira, Aldo Raul. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto Nacional de Limnología (INALI); Argentina
Fil: Paira, Aldo Raul. Universidad Nacional del Litoral. Instituto Nacional de Limnología (INALI); Argentina
Fil: Paira, Aldo Raul. Universidad Nacional del Litoral. Facultad de Ingeniería y Ciencias Hídricas; Argentina
Fil: Collins, Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto Nacional de Limnología (INALI); Argentina
Fil: Collins, Pablo. Universidad Nacional del Litoral. Instituto Nacional de Limnología (INALI); Argentina
Fil: Collins, Pablo. Universidad Nacional del Litoral. Facultad de Bioquímica y Ciencias Biológicas; Argentina
Fil: Collins, Pablo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela. Centro Operativo Experimental A.G.; Argentina
Fuente
Heliyon 11 (1) : e41224. (January 2025)
Materia
Dragado (sedimento)
Llanura Aluvial
Metales Pesados
Nutrientes
Río Paraná
Dredging
Floodplains
Heavy Metals
Nutrients
Parana River
Nivel de accesibilidad
acceso abierto
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:20.500.12123/21423
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oai_identifier_str oai:localhost:20.500.12123/21423
network_acronym_str INTADig
repository_id_str l
network_name_str INTA Digital (INTA)
spelling Dredging and sediment discharge in a river with floodplain. Physicochemical and microbiological effects in Paraná riverGonzalez, Maria JosefinaGonzalez, Stella MarisPaira, Aldo RaulCollins, PabloDragado (sedimento)Llanura AluvialMetales PesadosNutrientesRío ParanáDredgingFloodplainsHeavy MetalsNutrientsParana RiverAlterations caused by human activities in the environment, such as dredging, modify the physicochemical conditions and affect the habitat. Maintenance dredging that allows large vessels access to inland ports is a recurring disruptive action. The study aimed to evaluate, during a maintenance dredging operation in a port area of the Paraná River, the modifications in the structure of the river, the presence of contaminants and bacterial organisms. The effects caused during the operation of a suction dredge in a South America river under two temporal conditions were analyzed: i) the short and medium-term effects on the physicochemical variables, and ii) the immediate effects on the physicochemical variables and the abundance of bacterioplankton. The variables measured in sediment and water samples were limnological parameters (e.g. conductivity, pH, dissolved oxygen, among others), heavy metal concentration, presence of biocides, hydrocarbon molecules, nutrients, sediment granulometry, Escherichia coli, Enterococcus, total coliforms, and heterotrophic bacteria. Some physicochemical variables increased in the water column immediately after the water mass passed through the operating dredge, including sediment resuspension. The parameter changes were transient, as there were no significant increases in the variables downstream of the dredge during dredging and discharge operations or after dredging work. Some metal concentrations increased in the sediment and water column. Bacteria increased during dredging and more after rainfall events. Then, at the end of the dredging, the bacteria concentrations decreased to previous values. The possible effects of dredging disturbance were of the same order or less than those of natural ones, i.e. rainfall. Sixty days after the dredging work was completed, the system was back to normal both in the dredged and discharge areas.EEA RafaelaFil: Gutierrez, Maria Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto Nacional de Limnología (INALI); ArgentinaFil: Gutierrez, Maria Florencia. Universidad Nacional del Litoral. Instituto Nacional de Limnología (INALI); ArgentinaFil: Gonzalez, Stella Maris. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto Nacional de Limnología (INALI); ArgentinaFil: Gonzalez, Stella Maris. Universidad Nacional del Litoral. Instituto Nacional de Limnología (INALI); ArgentinaFil: Paira, Aldo Raul. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto Nacional de Limnología (INALI); ArgentinaFil: Paira, Aldo Raul. Universidad Nacional del Litoral. Instituto Nacional de Limnología (INALI); ArgentinaFil: Paira, Aldo Raul. Universidad Nacional del Litoral. Facultad de Ingeniería y Ciencias Hídricas; ArgentinaFil: Collins, Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto Nacional de Limnología (INALI); ArgentinaFil: Collins, Pablo. Universidad Nacional del Litoral. Instituto Nacional de Limnología (INALI); ArgentinaFil: Collins, Pablo. Universidad Nacional del Litoral. Facultad de Bioquímica y Ciencias Biológicas; ArgentinaFil: Collins, Pablo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela. Centro Operativo Experimental A.G.; ArgentinaElsevier2025-02-24T13:40:07Z2025-02-24T13:40:07Z2025-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/21423https://www.sciencedirect.com/science/article/pii/S24058440241725562405-8440https://doi.org/10.1016/j.heliyon.2024.e41224Heliyon 11 (1) : e41224. (January 2025)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)2025-09-04T09:50:56Zoai:localhost:20.500.12123/21423instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2025-09-04 09:50:57.124INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv Dredging and sediment discharge in a river with floodplain. Physicochemical and microbiological effects in Paraná river
title Dredging and sediment discharge in a river with floodplain. Physicochemical and microbiological effects in Paraná river
spellingShingle Dredging and sediment discharge in a river with floodplain. Physicochemical and microbiological effects in Paraná river
Gonzalez, Maria Josefina
Dragado (sedimento)
Llanura Aluvial
Metales Pesados
Nutrientes
Río Paraná
Dredging
Floodplains
Heavy Metals
Nutrients
Parana River
title_short Dredging and sediment discharge in a river with floodplain. Physicochemical and microbiological effects in Paraná river
title_full Dredging and sediment discharge in a river with floodplain. Physicochemical and microbiological effects in Paraná river
title_fullStr Dredging and sediment discharge in a river with floodplain. Physicochemical and microbiological effects in Paraná river
title_full_unstemmed Dredging and sediment discharge in a river with floodplain. Physicochemical and microbiological effects in Paraná river
title_sort Dredging and sediment discharge in a river with floodplain. Physicochemical and microbiological effects in Paraná river
dc.creator.none.fl_str_mv Gonzalez, Maria Josefina
Gonzalez, Stella Maris
Paira, Aldo Raul
Collins, Pablo
author Gonzalez, Maria Josefina
author_facet Gonzalez, Maria Josefina
Gonzalez, Stella Maris
Paira, Aldo Raul
Collins, Pablo
author_role author
author2 Gonzalez, Stella Maris
Paira, Aldo Raul
Collins, Pablo
author2_role author
author
author
dc.subject.none.fl_str_mv Dragado (sedimento)
Llanura Aluvial
Metales Pesados
Nutrientes
Río Paraná
Dredging
Floodplains
Heavy Metals
Nutrients
Parana River
topic Dragado (sedimento)
Llanura Aluvial
Metales Pesados
Nutrientes
Río Paraná
Dredging
Floodplains
Heavy Metals
Nutrients
Parana River
dc.description.none.fl_txt_mv Alterations caused by human activities in the environment, such as dredging, modify the physicochemical conditions and affect the habitat. Maintenance dredging that allows large vessels access to inland ports is a recurring disruptive action. The study aimed to evaluate, during a maintenance dredging operation in a port area of the Paraná River, the modifications in the structure of the river, the presence of contaminants and bacterial organisms. The effects caused during the operation of a suction dredge in a South America river under two temporal conditions were analyzed: i) the short and medium-term effects on the physicochemical variables, and ii) the immediate effects on the physicochemical variables and the abundance of bacterioplankton. The variables measured in sediment and water samples were limnological parameters (e.g. conductivity, pH, dissolved oxygen, among others), heavy metal concentration, presence of biocides, hydrocarbon molecules, nutrients, sediment granulometry, Escherichia coli, Enterococcus, total coliforms, and heterotrophic bacteria. Some physicochemical variables increased in the water column immediately after the water mass passed through the operating dredge, including sediment resuspension. The parameter changes were transient, as there were no significant increases in the variables downstream of the dredge during dredging and discharge operations or after dredging work. Some metal concentrations increased in the sediment and water column. Bacteria increased during dredging and more after rainfall events. Then, at the end of the dredging, the bacteria concentrations decreased to previous values. The possible effects of dredging disturbance were of the same order or less than those of natural ones, i.e. rainfall. Sixty days after the dredging work was completed, the system was back to normal both in the dredged and discharge areas.
EEA Rafaela
Fil: Gutierrez, Maria Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto Nacional de Limnología (INALI); Argentina
Fil: Gutierrez, Maria Florencia. Universidad Nacional del Litoral. Instituto Nacional de Limnología (INALI); Argentina
Fil: Gonzalez, Stella Maris. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto Nacional de Limnología (INALI); Argentina
Fil: Gonzalez, Stella Maris. Universidad Nacional del Litoral. Instituto Nacional de Limnología (INALI); Argentina
Fil: Paira, Aldo Raul. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto Nacional de Limnología (INALI); Argentina
Fil: Paira, Aldo Raul. Universidad Nacional del Litoral. Instituto Nacional de Limnología (INALI); Argentina
Fil: Paira, Aldo Raul. Universidad Nacional del Litoral. Facultad de Ingeniería y Ciencias Hídricas; Argentina
Fil: Collins, Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto Nacional de Limnología (INALI); Argentina
Fil: Collins, Pablo. Universidad Nacional del Litoral. Instituto Nacional de Limnología (INALI); Argentina
Fil: Collins, Pablo. Universidad Nacional del Litoral. Facultad de Bioquímica y Ciencias Biológicas; Argentina
Fil: Collins, Pablo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafaela. Centro Operativo Experimental A.G.; Argentina
description Alterations caused by human activities in the environment, such as dredging, modify the physicochemical conditions and affect the habitat. Maintenance dredging that allows large vessels access to inland ports is a recurring disruptive action. The study aimed to evaluate, during a maintenance dredging operation in a port area of the Paraná River, the modifications in the structure of the river, the presence of contaminants and bacterial organisms. The effects caused during the operation of a suction dredge in a South America river under two temporal conditions were analyzed: i) the short and medium-term effects on the physicochemical variables, and ii) the immediate effects on the physicochemical variables and the abundance of bacterioplankton. The variables measured in sediment and water samples were limnological parameters (e.g. conductivity, pH, dissolved oxygen, among others), heavy metal concentration, presence of biocides, hydrocarbon molecules, nutrients, sediment granulometry, Escherichia coli, Enterococcus, total coliforms, and heterotrophic bacteria. Some physicochemical variables increased in the water column immediately after the water mass passed through the operating dredge, including sediment resuspension. The parameter changes were transient, as there were no significant increases in the variables downstream of the dredge during dredging and discharge operations or after dredging work. Some metal concentrations increased in the sediment and water column. Bacteria increased during dredging and more after rainfall events. Then, at the end of the dredging, the bacteria concentrations decreased to previous values. The possible effects of dredging disturbance were of the same order or less than those of natural ones, i.e. rainfall. Sixty days after the dredging work was completed, the system was back to normal both in the dredged and discharge areas.
publishDate 2025
dc.date.none.fl_str_mv 2025-02-24T13:40:07Z
2025-02-24T13:40:07Z
2025-01
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/20.500.12123/21423
https://www.sciencedirect.com/science/article/pii/S2405844024172556
2405-8440
https://doi.org/10.1016/j.heliyon.2024.e41224
url http://hdl.handle.net/20.500.12123/21423
https://www.sciencedirect.com/science/article/pii/S2405844024172556
https://doi.org/10.1016/j.heliyon.2024.e41224
identifier_str_mv 2405-8440
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
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 Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv Heliyon 11 (1) : e41224. (January 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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score 12.623145

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