Seasonal and spatial variability of vertical particle flux along the Beagle Channel (Southern Patagonia)

Autores
Flores Melo, Elizabeth Ximena; Giesecke, R.; Schloss, Irene Ruth; Latorre, Maite Pilmayquen; Durrieu de Madron, X.; Bourrin, F.; Spinelli, Mariela Lorena; Menniti, C.; González, H. E.; Menschel, E.; Martín de Nascimento, Jacobo
Año de publicación
2024
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The Beagle Channel is a 300-km long passage connecting the Pacific and Atlantic Oceans at ~55° S, where glaciers and river streams meet subantarctic waters. Here we present the first evaluation of downward fluxes and composition of particulate matter in the channel. Settling particle fluxes were collected by sequential sediment traps deployed in two contrasting areas: one in the western part of the channel, corresponding to an early post-glacial environment (site A) and a second, fully deglaciated, river-dominated environment (site B) in the eastern part. In early summer, fluxes at both sites are driven by organic matter produced in spring, with peak organic carbon fluxes of 289 and 413 mg C m−2 d−1 at sites A and B, respectively (C:N ratios of 7.3 and 6.3, respectively). During winter, the fluxes of fecal pellets, particulate organic carbon (POC) and particulate nitrogen (PON) were at their minimum. At site A (integrated annual POC flux of 74 g C m−2 yr−1), seasonality was weak and the flux was driven by ballast material (>95% of total particle flux) of glacial origin year-around, which also promotes the POC export. According to isotopic and taxonomic analyses performed at site A, the low seasonality in the organic component of the flux appears to be mainly related to autochthonous production of nano- and picophytoplankton during autumn and winter, later replaced by microphytoplankton fluxes during spring and summer. At site B, ballast material accounted for <60% of total mass flux and the POC flux showed a marked seasonality with a well-defined maximum after the spring phytoplankton bloom. Regarding the contribution of zooplankton, fecal pellets of appendicularians dominated at the western sector of the channel (site A) while Munida gregaria pellets dominated the flux at the eastern site (site B). This work is a contribution to ongoing efforts to unveil the physical and biogeochemical variables driving the biological carbon pump and the land-sea connections in this high-latitude ecosystem threatened by climate change.
Fil: Flores Melo, Elizabeth Ximena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Giesecke, R.. Universidad Austral de Chile; Chile
Fil: Schloss, Irene Ruth. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina. Universidad Nacional de Tierra del Fuego, Antártida e Islas del Atlántico Sur. Instituto de Ciencias Polares, Ambientales y Recursos Naturales; Argentina
Fil: Latorre, Maite Pilmayquen. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Durrieu de Madron, X.. Centre de Formation et de Recherche sur les Environnements Méditerranéens; Francia
Fil: Bourrin, F.. Centre de Formation et de Recherche sur les Environnements Méditerranéens; Francia
Fil: Spinelli, Mariela Lorena. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Biodiversidad y Biología Experimental y Aplicada. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Biodiversidad y Biología Experimental y Aplicada; Argentina
Fil: Menniti, C.. Centre de Formation et de Recherche sur les Environnements Méditerranéens; Francia
Fil: González, H. E.. Universidad Austral de Chile; Chile
Fil: Menschel, E.. Centro de Investigacion En Ecosistemas de la Patagonia;
Fil: Martín de Nascimento, Jacobo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Materia
BALLAST MATTER
BEAGLE CHANNEL
HIGH LATITUDE ECOSYSTEMS
PELAGIC-BENTHIC COUPLING
SOUTHERN PATAGONIA
VERTICAL CARBON FLUX
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:11336/240721
Acceder
id CONICETDig_c0092a7006cd4a47728835adf57a523e
oai_identifier_str oai:ri.conicet.gov.ar:11336/240721
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Seasonal and spatial variability of vertical particle flux along the Beagle Channel (Southern Patagonia)Flores Melo, Elizabeth XimenaGiesecke, R.Schloss, Irene RuthLatorre, Maite PilmayquenDurrieu de Madron, X.Bourrin, F.Spinelli, Mariela LorenaMenniti, C.González, H. E.Menschel, E.Martín de Nascimento, JacoboBALLAST MATTERBEAGLE CHANNELHIGH LATITUDE ECOSYSTEMSPELAGIC-BENTHIC COUPLINGSOUTHERN PATAGONIAVERTICAL CARBON FLUXhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The Beagle Channel is a 300-km long passage connecting the Pacific and Atlantic Oceans at ~55° S, where glaciers and river streams meet subantarctic waters. Here we present the first evaluation of downward fluxes and composition of particulate matter in the channel. Settling particle fluxes were collected by sequential sediment traps deployed in two contrasting areas: one in the western part of the channel, corresponding to an early post-glacial environment (site A) and a second, fully deglaciated, river-dominated environment (site B) in the eastern part. In early summer, fluxes at both sites are driven by organic matter produced in spring, with peak organic carbon fluxes of 289 and 413 mg C m−2 d−1 at sites A and B, respectively (C:N ratios of 7.3 and 6.3, respectively). During winter, the fluxes of fecal pellets, particulate organic carbon (POC) and particulate nitrogen (PON) were at their minimum. At site A (integrated annual POC flux of 74 g C m−2 yr−1), seasonality was weak and the flux was driven by ballast material (>95% of total particle flux) of glacial origin year-around, which also promotes the POC export. According to isotopic and taxonomic analyses performed at site A, the low seasonality in the organic component of the flux appears to be mainly related to autochthonous production of nano- and picophytoplankton during autumn and winter, later replaced by microphytoplankton fluxes during spring and summer. At site B, ballast material accounted for <60% of total mass flux and the POC flux showed a marked seasonality with a well-defined maximum after the spring phytoplankton bloom. Regarding the contribution of zooplankton, fecal pellets of appendicularians dominated at the western sector of the channel (site A) while Munida gregaria pellets dominated the flux at the eastern site (site B). This work is a contribution to ongoing efforts to unveil the physical and biogeochemical variables driving the biological carbon pump and the land-sea connections in this high-latitude ecosystem threatened by climate change.Fil: Flores Melo, Elizabeth Ximena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; ArgentinaFil: Giesecke, R.. Universidad Austral de Chile; ChileFil: Schloss, Irene Ruth. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina. Universidad Nacional de Tierra del Fuego, Antártida e Islas del Atlántico Sur. Instituto de Ciencias Polares, Ambientales y Recursos Naturales; ArgentinaFil: Latorre, Maite Pilmayquen. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; ArgentinaFil: Durrieu de Madron, X.. Centre de Formation et de Recherche sur les Environnements Méditerranéens; FranciaFil: Bourrin, F.. Centre de Formation et de Recherche sur les Environnements Méditerranéens; FranciaFil: Spinelli, Mariela Lorena. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Biodiversidad y Biología Experimental y Aplicada. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Biodiversidad y Biología Experimental y Aplicada; ArgentinaFil: Menniti, C.. Centre de Formation et de Recherche sur les Environnements Méditerranéens; FranciaFil: González, H. E.. Universidad Austral de Chile; ChileFil: Menschel, E.. Centro de Investigacion En Ecosistemas de la Patagonia;Fil: Martín de Nascimento, Jacobo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; ArgentinaElsevier Science2024-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/240721Flores Melo, Elizabeth Ximena; Giesecke, R.; Schloss, Irene Ruth; Latorre, Maite Pilmayquen; Durrieu de Madron, X.; et al.; Seasonal and spatial variability of vertical particle flux along the Beagle Channel (Southern Patagonia); Elsevier Science; Journal of Marine Systems; 241; 1-2024; 1-360924-7963CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S092479632300057Xinfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.jmarsys.2023.103913info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:34:17Zoai:ri.conicet.gov.ar:11336/240721instacron: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 09:34:17.695CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Seasonal and spatial variability of vertical particle flux along the Beagle Channel (Southern Patagonia)
title Seasonal and spatial variability of vertical particle flux along the Beagle Channel (Southern Patagonia)
spellingShingle Seasonal and spatial variability of vertical particle flux along the Beagle Channel (Southern Patagonia)
Flores Melo, Elizabeth Ximena
BALLAST MATTER
BEAGLE CHANNEL
HIGH LATITUDE ECOSYSTEMS
PELAGIC-BENTHIC COUPLING
SOUTHERN PATAGONIA
VERTICAL CARBON FLUX
title_short Seasonal and spatial variability of vertical particle flux along the Beagle Channel (Southern Patagonia)
title_full Seasonal and spatial variability of vertical particle flux along the Beagle Channel (Southern Patagonia)
title_fullStr Seasonal and spatial variability of vertical particle flux along the Beagle Channel (Southern Patagonia)
title_full_unstemmed Seasonal and spatial variability of vertical particle flux along the Beagle Channel (Southern Patagonia)
title_sort Seasonal and spatial variability of vertical particle flux along the Beagle Channel (Southern Patagonia)
dc.creator.none.fl_str_mv Flores Melo, Elizabeth Ximena
Giesecke, R.
Schloss, Irene Ruth
Latorre, Maite Pilmayquen
Durrieu de Madron, X.
Bourrin, F.
Spinelli, Mariela Lorena
Menniti, C.
González, H. E.
Menschel, E.
Martín de Nascimento, Jacobo
author Flores Melo, Elizabeth Ximena
author_facet Flores Melo, Elizabeth Ximena
Giesecke, R.
Schloss, Irene Ruth
Latorre, Maite Pilmayquen
Durrieu de Madron, X.
Bourrin, F.
Spinelli, Mariela Lorena
Menniti, C.
González, H. E.
Menschel, E.
Martín de Nascimento, Jacobo
author_role author
author2 Giesecke, R.
Schloss, Irene Ruth
Latorre, Maite Pilmayquen
Durrieu de Madron, X.
Bourrin, F.
Spinelli, Mariela Lorena
Menniti, C.
González, H. E.
Menschel, E.
Martín de Nascimento, Jacobo
author2_role author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv BALLAST MATTER
BEAGLE CHANNEL
HIGH LATITUDE ECOSYSTEMS
PELAGIC-BENTHIC COUPLING
SOUTHERN PATAGONIA
VERTICAL CARBON FLUX
topic BALLAST MATTER
BEAGLE CHANNEL
HIGH LATITUDE ECOSYSTEMS
PELAGIC-BENTHIC COUPLING
SOUTHERN PATAGONIA
VERTICAL CARBON FLUX
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The Beagle Channel is a 300-km long passage connecting the Pacific and Atlantic Oceans at ~55° S, where glaciers and river streams meet subantarctic waters. Here we present the first evaluation of downward fluxes and composition of particulate matter in the channel. Settling particle fluxes were collected by sequential sediment traps deployed in two contrasting areas: one in the western part of the channel, corresponding to an early post-glacial environment (site A) and a second, fully deglaciated, river-dominated environment (site B) in the eastern part. In early summer, fluxes at both sites are driven by organic matter produced in spring, with peak organic carbon fluxes of 289 and 413 mg C m−2 d−1 at sites A and B, respectively (C:N ratios of 7.3 and 6.3, respectively). During winter, the fluxes of fecal pellets, particulate organic carbon (POC) and particulate nitrogen (PON) were at their minimum. At site A (integrated annual POC flux of 74 g C m−2 yr−1), seasonality was weak and the flux was driven by ballast material (>95% of total particle flux) of glacial origin year-around, which also promotes the POC export. According to isotopic and taxonomic analyses performed at site A, the low seasonality in the organic component of the flux appears to be mainly related to autochthonous production of nano- and picophytoplankton during autumn and winter, later replaced by microphytoplankton fluxes during spring and summer. At site B, ballast material accounted for <60% of total mass flux and the POC flux showed a marked seasonality with a well-defined maximum after the spring phytoplankton bloom. Regarding the contribution of zooplankton, fecal pellets of appendicularians dominated at the western sector of the channel (site A) while Munida gregaria pellets dominated the flux at the eastern site (site B). This work is a contribution to ongoing efforts to unveil the physical and biogeochemical variables driving the biological carbon pump and the land-sea connections in this high-latitude ecosystem threatened by climate change.
Fil: Flores Melo, Elizabeth Ximena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Giesecke, R.. Universidad Austral de Chile; Chile
Fil: Schloss, Irene Ruth. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina. Universidad Nacional de Tierra del Fuego, Antártida e Islas del Atlántico Sur. Instituto de Ciencias Polares, Ambientales y Recursos Naturales; Argentina
Fil: Latorre, Maite Pilmayquen. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
Fil: Durrieu de Madron, X.. Centre de Formation et de Recherche sur les Environnements Méditerranéens; Francia
Fil: Bourrin, F.. Centre de Formation et de Recherche sur les Environnements Méditerranéens; Francia
Fil: Spinelli, Mariela Lorena. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Biodiversidad y Biología Experimental y Aplicada. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Biodiversidad y Biología Experimental y Aplicada; Argentina
Fil: Menniti, C.. Centre de Formation et de Recherche sur les Environnements Méditerranéens; Francia
Fil: González, H. E.. Universidad Austral de Chile; Chile
Fil: Menschel, E.. Centro de Investigacion En Ecosistemas de la Patagonia;
Fil: Martín de Nascimento, Jacobo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
description The Beagle Channel is a 300-km long passage connecting the Pacific and Atlantic Oceans at ~55° S, where glaciers and river streams meet subantarctic waters. Here we present the first evaluation of downward fluxes and composition of particulate matter in the channel. Settling particle fluxes were collected by sequential sediment traps deployed in two contrasting areas: one in the western part of the channel, corresponding to an early post-glacial environment (site A) and a second, fully deglaciated, river-dominated environment (site B) in the eastern part. In early summer, fluxes at both sites are driven by organic matter produced in spring, with peak organic carbon fluxes of 289 and 413 mg C m−2 d−1 at sites A and B, respectively (C:N ratios of 7.3 and 6.3, respectively). During winter, the fluxes of fecal pellets, particulate organic carbon (POC) and particulate nitrogen (PON) were at their minimum. At site A (integrated annual POC flux of 74 g C m−2 yr−1), seasonality was weak and the flux was driven by ballast material (>95% of total particle flux) of glacial origin year-around, which also promotes the POC export. According to isotopic and taxonomic analyses performed at site A, the low seasonality in the organic component of the flux appears to be mainly related to autochthonous production of nano- and picophytoplankton during autumn and winter, later replaced by microphytoplankton fluxes during spring and summer. At site B, ballast material accounted for <60% of total mass flux and the POC flux showed a marked seasonality with a well-defined maximum after the spring phytoplankton bloom. Regarding the contribution of zooplankton, fecal pellets of appendicularians dominated at the western sector of the channel (site A) while Munida gregaria pellets dominated the flux at the eastern site (site B). This work is a contribution to ongoing efforts to unveil the physical and biogeochemical variables driving the biological carbon pump and the land-sea connections in this high-latitude ecosystem threatened by climate change.
publishDate 2024
dc.date.none.fl_str_mv 2024-01
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/11336/240721
Flores Melo, Elizabeth Ximena; Giesecke, R.; Schloss, Irene Ruth; Latorre, Maite Pilmayquen; Durrieu de Madron, X.; et al.; Seasonal and spatial variability of vertical particle flux along the Beagle Channel (Southern Patagonia); Elsevier Science; Journal of Marine Systems; 241; 1-2024; 1-36
0924-7963
CONICET Digital
CONICET
url http://hdl.handle.net/11336/240721
identifier_str_mv Flores Melo, Elizabeth Ximena; Giesecke, R.; Schloss, Irene Ruth; Latorre, Maite Pilmayquen; Durrieu de Madron, X.; et al.; Seasonal and spatial variability of vertical particle flux along the Beagle Channel (Southern Patagonia); Elsevier Science; Journal of Marine Systems; 241; 1-2024; 1-36
0924-7963
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S092479632300057X
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jmarsys.2023.103913
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
application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
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_ 1844613060426203136
score 13.070432

Publicaciones similares