Climate-driven changes in underwater irradiance and primary productivity in an Antarctic fjord (Potter Cove, Western Antarctic Peninsula)

Autores
Deregibus, Dolores; Quartino, Maria Liliana; Ruiz Barlett, Eduardo Mariano; Zacher, Katharina; Bartsch, Inka
Año de publicación
2025
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The West Antarctic Peninsula (WAP) is a hotspot of climate warming, evidencing glacier retreat and a decrease in the fast-ice duration. This study provides a > 30-y time-series (1987–2022) on annual and seasonal air temperatures in Potter Cove (Isla 25 de Mayo/King George Island). It investigates the interaction between warming, glacial melt, fast-ice and the underwater conditions (light, salinity, temperature, turbidity) over a period of 10 years along the fjord axis (2010–2019), and for the first time provides a unique continuous underwater irradiance time series over 5 years (2014–2018). The effects on the annual light budget in the water column were studied along the fjord axis in three areas, a low glacier influence area (LGI), an intermediate glacier influence area (IGI), and a high glacier influence area (HGI). To determine the possible impact of light limitation on the viability of benthic primary producers, the minimum annual light requirements and the daily metabolic carbon balance of two key macroalgal Antarctic species, Himantothallus grandifolius and Palmaria decipiens, were estimated. The mean annual, autumn, winter and spring air temperature has risen during the last three decades, but summer temperatures kept rather stable. Turbidity caused by glacial melt mostly governs the underwater light climate while fast-ice duration is currently of minor importance for the annual light budget. Glacier melting differentially affected the fjord system along its axis. The three areas showed quantitative differences in turbidity and underwater irradiance varying across seasons and years. Water clarity significantly decreased within the last few years, with key macroalgal species probably not reaching their minimum annual light requirements during warmer years. This may have considerable effects on the primary productivity of the ecosystem.
Fil: Deregibus, Dolores. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Quartino, Maria Liliana. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina
Fil: Ruiz Barlett, Eduardo Mariano. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina
Fil: Zacher, Katharina. Helmholtz Centre for Polar and Marine Research; Alemania
Fil: Bartsch, Inka. Helmholtz Centre for Polar and Marine Research; Alemania
Materia
MACROALGAE
CARBON BALANCE
CLIMATE CHANGE
GLACIAR RETREAT
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:11336/266291
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/266291
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Climate-driven changes in underwater irradiance and primary productivity in an Antarctic fjord (Potter Cove, Western Antarctic Peninsula)Deregibus, DoloresQuartino, Maria LilianaRuiz Barlett, Eduardo MarianoZacher, KatharinaBartsch, InkaMACROALGAECARBON BALANCECLIMATE CHANGEGLACIAR RETREAThttps://purl.org/becyt/ford/1.7https://purl.org/becyt/ford/1The West Antarctic Peninsula (WAP) is a hotspot of climate warming, evidencing glacier retreat and a decrease in the fast-ice duration. This study provides a > 30-y time-series (1987–2022) on annual and seasonal air temperatures in Potter Cove (Isla 25 de Mayo/King George Island). It investigates the interaction between warming, glacial melt, fast-ice and the underwater conditions (light, salinity, temperature, turbidity) over a period of 10 years along the fjord axis (2010–2019), and for the first time provides a unique continuous underwater irradiance time series over 5 years (2014–2018). The effects on the annual light budget in the water column were studied along the fjord axis in three areas, a low glacier influence area (LGI), an intermediate glacier influence area (IGI), and a high glacier influence area (HGI). To determine the possible impact of light limitation on the viability of benthic primary producers, the minimum annual light requirements and the daily metabolic carbon balance of two key macroalgal Antarctic species, Himantothallus grandifolius and Palmaria decipiens, were estimated. The mean annual, autumn, winter and spring air temperature has risen during the last three decades, but summer temperatures kept rather stable. Turbidity caused by glacial melt mostly governs the underwater light climate while fast-ice duration is currently of minor importance for the annual light budget. Glacier melting differentially affected the fjord system along its axis. The three areas showed quantitative differences in turbidity and underwater irradiance varying across seasons and years. Water clarity significantly decreased within the last few years, with key macroalgal species probably not reaching their minimum annual light requirements during warmer years. This may have considerable effects on the primary productivity of the ecosystem.Fil: Deregibus, Dolores. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Quartino, Maria Liliana. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; ArgentinaFil: Ruiz Barlett, Eduardo Mariano. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; ArgentinaFil: Zacher, Katharina. Helmholtz Centre for Polar and Marine Research; AlemaniaFil: Bartsch, Inka. Helmholtz Centre for Polar and Marine Research; AlemaniaElsevier2025-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/266291Deregibus, Dolores; Quartino, Maria Liliana; Ruiz Barlett, Eduardo Mariano; Zacher, Katharina; Bartsch, Inka; Climate-driven changes in underwater irradiance and primary productivity in an Antarctic fjord (Potter Cove, Western Antarctic Peninsula); Elsevier; Science of the Total Environment; 960; 1-2025; 1-150048-9697CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S0048969724084079info:eu-repo/semantics/altIdentifier/doi/10.1016/j.scitotenv.2024.178249info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:04:37Zoai:ri.conicet.gov.ar:11336/266291instacron: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:34982025-10-15 15:04:38.288CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Climate-driven changes in underwater irradiance and primary productivity in an Antarctic fjord (Potter Cove, Western Antarctic Peninsula)
title Climate-driven changes in underwater irradiance and primary productivity in an Antarctic fjord (Potter Cove, Western Antarctic Peninsula)
spellingShingle Climate-driven changes in underwater irradiance and primary productivity in an Antarctic fjord (Potter Cove, Western Antarctic Peninsula)
Deregibus, Dolores
MACROALGAE
CARBON BALANCE
CLIMATE CHANGE
GLACIAR RETREAT
title_short Climate-driven changes in underwater irradiance and primary productivity in an Antarctic fjord (Potter Cove, Western Antarctic Peninsula)
title_full Climate-driven changes in underwater irradiance and primary productivity in an Antarctic fjord (Potter Cove, Western Antarctic Peninsula)
title_fullStr Climate-driven changes in underwater irradiance and primary productivity in an Antarctic fjord (Potter Cove, Western Antarctic Peninsula)
title_full_unstemmed Climate-driven changes in underwater irradiance and primary productivity in an Antarctic fjord (Potter Cove, Western Antarctic Peninsula)
title_sort Climate-driven changes in underwater irradiance and primary productivity in an Antarctic fjord (Potter Cove, Western Antarctic Peninsula)
dc.creator.none.fl_str_mv Deregibus, Dolores
Quartino, Maria Liliana
Ruiz Barlett, Eduardo Mariano
Zacher, Katharina
Bartsch, Inka
author Deregibus, Dolores
author_facet Deregibus, Dolores
Quartino, Maria Liliana
Ruiz Barlett, Eduardo Mariano
Zacher, Katharina
Bartsch, Inka
author_role author
author2 Quartino, Maria Liliana
Ruiz Barlett, Eduardo Mariano
Zacher, Katharina
Bartsch, Inka
author2_role author
author
author
author
dc.subject.none.fl_str_mv MACROALGAE
CARBON BALANCE
CLIMATE CHANGE
GLACIAR RETREAT
topic MACROALGAE
CARBON BALANCE
CLIMATE CHANGE
GLACIAR RETREAT
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.7
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The West Antarctic Peninsula (WAP) is a hotspot of climate warming, evidencing glacier retreat and a decrease in the fast-ice duration. This study provides a > 30-y time-series (1987–2022) on annual and seasonal air temperatures in Potter Cove (Isla 25 de Mayo/King George Island). It investigates the interaction between warming, glacial melt, fast-ice and the underwater conditions (light, salinity, temperature, turbidity) over a period of 10 years along the fjord axis (2010–2019), and for the first time provides a unique continuous underwater irradiance time series over 5 years (2014–2018). The effects on the annual light budget in the water column were studied along the fjord axis in three areas, a low glacier influence area (LGI), an intermediate glacier influence area (IGI), and a high glacier influence area (HGI). To determine the possible impact of light limitation on the viability of benthic primary producers, the minimum annual light requirements and the daily metabolic carbon balance of two key macroalgal Antarctic species, Himantothallus grandifolius and Palmaria decipiens, were estimated. The mean annual, autumn, winter and spring air temperature has risen during the last three decades, but summer temperatures kept rather stable. Turbidity caused by glacial melt mostly governs the underwater light climate while fast-ice duration is currently of minor importance for the annual light budget. Glacier melting differentially affected the fjord system along its axis. The three areas showed quantitative differences in turbidity and underwater irradiance varying across seasons and years. Water clarity significantly decreased within the last few years, with key macroalgal species probably not reaching their minimum annual light requirements during warmer years. This may have considerable effects on the primary productivity of the ecosystem.
Fil: Deregibus, Dolores. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Quartino, Maria Liliana. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina
Fil: Ruiz Barlett, Eduardo Mariano. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina
Fil: Zacher, Katharina. Helmholtz Centre for Polar and Marine Research; Alemania
Fil: Bartsch, Inka. Helmholtz Centre for Polar and Marine Research; Alemania
description The West Antarctic Peninsula (WAP) is a hotspot of climate warming, evidencing glacier retreat and a decrease in the fast-ice duration. This study provides a > 30-y time-series (1987–2022) on annual and seasonal air temperatures in Potter Cove (Isla 25 de Mayo/King George Island). It investigates the interaction between warming, glacial melt, fast-ice and the underwater conditions (light, salinity, temperature, turbidity) over a period of 10 years along the fjord axis (2010–2019), and for the first time provides a unique continuous underwater irradiance time series over 5 years (2014–2018). The effects on the annual light budget in the water column were studied along the fjord axis in three areas, a low glacier influence area (LGI), an intermediate glacier influence area (IGI), and a high glacier influence area (HGI). To determine the possible impact of light limitation on the viability of benthic primary producers, the minimum annual light requirements and the daily metabolic carbon balance of two key macroalgal Antarctic species, Himantothallus grandifolius and Palmaria decipiens, were estimated. The mean annual, autumn, winter and spring air temperature has risen during the last three decades, but summer temperatures kept rather stable. Turbidity caused by glacial melt mostly governs the underwater light climate while fast-ice duration is currently of minor importance for the annual light budget. Glacier melting differentially affected the fjord system along its axis. The three areas showed quantitative differences in turbidity and underwater irradiance varying across seasons and years. Water clarity significantly decreased within the last few years, with key macroalgal species probably not reaching their minimum annual light requirements during warmer years. This may have considerable effects on the primary productivity of the ecosystem.
publishDate 2025
dc.date.none.fl_str_mv 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/11336/266291
Deregibus, Dolores; Quartino, Maria Liliana; Ruiz Barlett, Eduardo Mariano; Zacher, Katharina; Bartsch, Inka; Climate-driven changes in underwater irradiance and primary productivity in an Antarctic fjord (Potter Cove, Western Antarctic Peninsula); Elsevier; Science of the Total Environment; 960; 1-2025; 1-15
0048-9697
CONICET Digital
CONICET
url http://hdl.handle.net/11336/266291
identifier_str_mv Deregibus, Dolores; Quartino, Maria Liliana; Ruiz Barlett, Eduardo Mariano; Zacher, Katharina; Bartsch, Inka; Climate-driven changes in underwater irradiance and primary productivity in an Antarctic fjord (Potter Cove, Western Antarctic Peninsula); Elsevier; Science of the Total Environment; 960; 1-2025; 1-15
0048-9697
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/S0048969724084079
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.scitotenv.2024.178249
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
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
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 13.22299

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