Fluvial organic carbon cycling regulated by sediment transit time and mineral protection

Autores
Repasch, Marisa; Scheingross, Joel S.; Hovius, Niels; Lupker, Maarten; Wittmann, Hella; Haghipour, Negar; Gröcke, Darren R.; Orfeo, Oscar; Eglinton, Timothy I.; Sachse, Dirk
Año de publicación
2021
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Rivers transfer terrestrial organic carbon (OC) from mountains to ocean basins, playing a key role in the global carbon cycle. During fluvial transit, OC may be oxidized and emitted to the atmosphere as CO2 or preserved and transported to downstream depositional sinks. The balance between oxidation and preservation determines the amount of particulate OC (POC) that can be buried long term, but the factors regulating this balance are poorly constrained. Here, we quantify the effects of fluvial transit on POC fluxes along an ~1,300 km lowland channel with no tributaries. We show that sediment transit time and mineral protection regulate the magnitude and rate of POC oxidation, respectively. Using a simple turnover model, we estimate that annual POC oxidation is a small percentage of the POC delivered to the river. Modelling shows that lateral erosion into POC-rich floodplains can increase POC fluxes to downstream basins, thereby offsetting POC oxidation. Consequently, rivers with high channel mobility can enhance CO2 drawdown while management practices that stabilize river channels may reduce the potential for CO2 drawdown.
Fil: Repasch, Marisa. German Research Centre for Geosciences; Alemania. Universitat Potsdam; Alemania
Fil: Scheingross, Joel S.. University Of Nevada; Estados Unidos
Fil: Hovius, Niels. Universitat Potsdam; Alemania. German Research Centre for Geosciences; Alemania
Fil: Lupker, Maarten. Geological Institute; Suiza
Fil: Wittmann, Hella. German Research Centre for Geosciences; Alemania
Fil: Haghipour, Negar. Geological Institute; Suiza
Fil: Gröcke, Darren R.. University of Durham; Reino Unido
Fil: Orfeo, Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Centro de Ecología Aplicada del Litoral. Universidad Nacional del Nordeste. Centro de Ecología Aplicada del Litoral; Argentina
Fil: Eglinton, Timothy I.. Geological Institute; Suiza
Fil: Sachse, Dirk. German Research Centre for Geosciences; Alemania
Materia
ORGANIC CARBON
FLUVIAL ENVIRONMENT
SEDIMENT TRANSIT
BERMEJO RIVER
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/168077
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/168077
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Fluvial organic carbon cycling regulated by sediment transit time and mineral protectionRepasch, MarisaScheingross, Joel S.Hovius, NielsLupker, MaartenWittmann, HellaHaghipour, NegarGröcke, Darren R.Orfeo, OscarEglinton, Timothy I.Sachse, DirkORGANIC CARBONFLUVIAL ENVIRONMENTSEDIMENT TRANSITBERMEJO RIVERhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Rivers transfer terrestrial organic carbon (OC) from mountains to ocean basins, playing a key role in the global carbon cycle. During fluvial transit, OC may be oxidized and emitted to the atmosphere as CO2 or preserved and transported to downstream depositional sinks. The balance between oxidation and preservation determines the amount of particulate OC (POC) that can be buried long term, but the factors regulating this balance are poorly constrained. Here, we quantify the effects of fluvial transit on POC fluxes along an ~1,300 km lowland channel with no tributaries. We show that sediment transit time and mineral protection regulate the magnitude and rate of POC oxidation, respectively. Using a simple turnover model, we estimate that annual POC oxidation is a small percentage of the POC delivered to the river. Modelling shows that lateral erosion into POC-rich floodplains can increase POC fluxes to downstream basins, thereby offsetting POC oxidation. Consequently, rivers with high channel mobility can enhance CO2 drawdown while management practices that stabilize river channels may reduce the potential for CO2 drawdown.Fil: Repasch, Marisa. German Research Centre for Geosciences; Alemania. Universitat Potsdam; AlemaniaFil: Scheingross, Joel S.. University Of Nevada; Estados UnidosFil: Hovius, Niels. Universitat Potsdam; Alemania. German Research Centre for Geosciences; AlemaniaFil: Lupker, Maarten. Geological Institute; SuizaFil: Wittmann, Hella. German Research Centre for Geosciences; AlemaniaFil: Haghipour, Negar. Geological Institute; SuizaFil: Gröcke, Darren R.. University of Durham; Reino UnidoFil: Orfeo, Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Centro de Ecología Aplicada del Litoral. Universidad Nacional del Nordeste. Centro de Ecología Aplicada del Litoral; ArgentinaFil: Eglinton, Timothy I.. Geological Institute; SuizaFil: Sachse, Dirk. German Research Centre for Geosciences; AlemaniaNature Publishing Group2021-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/168077Repasch, Marisa; Scheingross, Joel S.; Hovius, Niels; Lupker, Maarten; Wittmann, Hella; et al.; Fluvial organic carbon cycling regulated by sediment transit time and mineral protection; Nature Publishing Group; Nature Geoscience; 14; 11; 11-2021; 842-8481752-0894CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1038/s41561-021-00845-7info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:43:19Zoai:ri.conicet.gov.ar:11336/168077instacron: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 10:43:19.419CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Fluvial organic carbon cycling regulated by sediment transit time and mineral protection
title Fluvial organic carbon cycling regulated by sediment transit time and mineral protection
spellingShingle Fluvial organic carbon cycling regulated by sediment transit time and mineral protection
Repasch, Marisa
ORGANIC CARBON
FLUVIAL ENVIRONMENT
SEDIMENT TRANSIT
BERMEJO RIVER
title_short Fluvial organic carbon cycling regulated by sediment transit time and mineral protection
title_full Fluvial organic carbon cycling regulated by sediment transit time and mineral protection
title_fullStr Fluvial organic carbon cycling regulated by sediment transit time and mineral protection
title_full_unstemmed Fluvial organic carbon cycling regulated by sediment transit time and mineral protection
title_sort Fluvial organic carbon cycling regulated by sediment transit time and mineral protection
dc.creator.none.fl_str_mv Repasch, Marisa
Scheingross, Joel S.
Hovius, Niels
Lupker, Maarten
Wittmann, Hella
Haghipour, Negar
Gröcke, Darren R.
Orfeo, Oscar
Eglinton, Timothy I.
Sachse, Dirk
author Repasch, Marisa
author_facet Repasch, Marisa
Scheingross, Joel S.
Hovius, Niels
Lupker, Maarten
Wittmann, Hella
Haghipour, Negar
Gröcke, Darren R.
Orfeo, Oscar
Eglinton, Timothy I.
Sachse, Dirk
author_role author
author2 Scheingross, Joel S.
Hovius, Niels
Lupker, Maarten
Wittmann, Hella
Haghipour, Negar
Gröcke, Darren R.
Orfeo, Oscar
Eglinton, Timothy I.
Sachse, Dirk
author2_role author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv ORGANIC CARBON
FLUVIAL ENVIRONMENT
SEDIMENT TRANSIT
BERMEJO RIVER
topic ORGANIC CARBON
FLUVIAL ENVIRONMENT
SEDIMENT TRANSIT
BERMEJO RIVER
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Rivers transfer terrestrial organic carbon (OC) from mountains to ocean basins, playing a key role in the global carbon cycle. During fluvial transit, OC may be oxidized and emitted to the atmosphere as CO2 or preserved and transported to downstream depositional sinks. The balance between oxidation and preservation determines the amount of particulate OC (POC) that can be buried long term, but the factors regulating this balance are poorly constrained. Here, we quantify the effects of fluvial transit on POC fluxes along an ~1,300 km lowland channel with no tributaries. We show that sediment transit time and mineral protection regulate the magnitude and rate of POC oxidation, respectively. Using a simple turnover model, we estimate that annual POC oxidation is a small percentage of the POC delivered to the river. Modelling shows that lateral erosion into POC-rich floodplains can increase POC fluxes to downstream basins, thereby offsetting POC oxidation. Consequently, rivers with high channel mobility can enhance CO2 drawdown while management practices that stabilize river channels may reduce the potential for CO2 drawdown.
Fil: Repasch, Marisa. German Research Centre for Geosciences; Alemania. Universitat Potsdam; Alemania
Fil: Scheingross, Joel S.. University Of Nevada; Estados Unidos
Fil: Hovius, Niels. Universitat Potsdam; Alemania. German Research Centre for Geosciences; Alemania
Fil: Lupker, Maarten. Geological Institute; Suiza
Fil: Wittmann, Hella. German Research Centre for Geosciences; Alemania
Fil: Haghipour, Negar. Geological Institute; Suiza
Fil: Gröcke, Darren R.. University of Durham; Reino Unido
Fil: Orfeo, Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Centro de Ecología Aplicada del Litoral. Universidad Nacional del Nordeste. Centro de Ecología Aplicada del Litoral; Argentina
Fil: Eglinton, Timothy I.. Geological Institute; Suiza
Fil: Sachse, Dirk. German Research Centre for Geosciences; Alemania
description Rivers transfer terrestrial organic carbon (OC) from mountains to ocean basins, playing a key role in the global carbon cycle. During fluvial transit, OC may be oxidized and emitted to the atmosphere as CO2 or preserved and transported to downstream depositional sinks. The balance between oxidation and preservation determines the amount of particulate OC (POC) that can be buried long term, but the factors regulating this balance are poorly constrained. Here, we quantify the effects of fluvial transit on POC fluxes along an ~1,300 km lowland channel with no tributaries. We show that sediment transit time and mineral protection regulate the magnitude and rate of POC oxidation, respectively. Using a simple turnover model, we estimate that annual POC oxidation is a small percentage of the POC delivered to the river. Modelling shows that lateral erosion into POC-rich floodplains can increase POC fluxes to downstream basins, thereby offsetting POC oxidation. Consequently, rivers with high channel mobility can enhance CO2 drawdown while management practices that stabilize river channels may reduce the potential for CO2 drawdown.
publishDate 2021
dc.date.none.fl_str_mv 2021-11
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/11336/168077
Repasch, Marisa; Scheingross, Joel S.; Hovius, Niels; Lupker, Maarten; Wittmann, Hella; et al.; Fluvial organic carbon cycling regulated by sediment transit time and mineral protection; Nature Publishing Group; Nature Geoscience; 14; 11; 11-2021; 842-848
1752-0894
CONICET Digital
CONICET
url http://hdl.handle.net/11336/168077
identifier_str_mv Repasch, Marisa; Scheingross, Joel S.; Hovius, Niels; Lupker, Maarten; Wittmann, Hella; et al.; Fluvial organic carbon cycling regulated by sediment transit time and mineral protection; Nature Publishing Group; Nature Geoscience; 14; 11; 11-2021; 842-848
1752-0894
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1038/s41561-021-00845-7
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Nature Publishing Group
publisher.none.fl_str_mv Nature Publishing Group
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
_version_ 1844614467950739456
score 13.070432

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