Ocean acidification exacerbates the effect of UV radiation on the calcifying phytoplankter Emiliania huxleyi

Autores
Gao, Kunshan; Ruan, Zuoxi; Villafañe, Virginia Estela; Gattuso, Jean-Pierre; Helbling, Eduardo Walter
Año de publicación
2009
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Increasing atmospheric CO2 concentration affects calcification in most planktonic calcifiers. Both reduced or stimulated calcification under high CO2 have been reported in the widespread coccolithophore Emiliania huxleyi. This might affect the response of cells to photosynthetically active radiation (PAR; 400-700 nm) and ultraviolet radiation (UVR; 280-400 nm) by altering the thickness of the coccolith layer. Here we show that in the absence of UVR, the calcification rates in E. huxleyi decrease under lowered pH levels (pHNBS of 7.9 and 7.6; pCO2 of 81 and 178 Pa or 804 and 1759 ppmv, respectively) leading to thinned coccolith layers, whereas photosynthetic carbon fixation was slightly enhanced at pH 7.9 but remained unaffected at pH 7.6. Exposure to UVR (UV-A 19.5 W m-2, UV-B 0.67 W m-2) in addition to PAR (88.5 W m22), however, results in significant inhibition of both photosynthesis and calcification, and these rates are further inhibited with increasing acidification. The combined effects of UVR and seawater acidification resulted in the inhibition of calcification rates by 96% and 99% and that of photosynthesis by 6% and 15%, at pH 7.9 and 7.6, respectively. This differential inhibition of calcification and photosynthesis leads to significant reduction of the ratio of calcification to photosynthesis. Seawater acidification enhanced the transmission of harmful UVR by about 26% through a reduction of the coccolith layer of 31%. Our data indicate that the effect of a high-CO2 and low-pH ocean on E. huxleyi (because of reduced calcification associated with changes in the carbonate system) enhances the detrimental effects of UVR on the main pelagic calcifier.
Fil: Gao, Kunshan. Xiamen University; China
Fil: Ruan, Zuoxi. Shantou University; China
Fil: Villafañe, Virginia Estela. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fundación Playa Unión. Estación de Fotobiología Playa Unión; Argentina
Fil: Gattuso, Jean-Pierre. Centre National de la Recherche Scientifique; Francia. Université Pierre et Marie Curie; Francia
Fil: Helbling, Eduardo Walter. Fundación Playa Unión. Estación de Fotobiología Playa Unión; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
UVR
ACIDIFICATION
PHYTOPLANKTON
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:11336/97365
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Ocean acidification exacerbates the effect of UV radiation on the calcifying phytoplankter Emiliania huxleyiGao, KunshanRuan, ZuoxiVillafañe, Virginia EstelaGattuso, Jean-PierreHelbling, Eduardo WalterUVRACIDIFICATIONPHYTOPLANKTONhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Increasing atmospheric CO2 concentration affects calcification in most planktonic calcifiers. Both reduced or stimulated calcification under high CO2 have been reported in the widespread coccolithophore Emiliania huxleyi. This might affect the response of cells to photosynthetically active radiation (PAR; 400-700 nm) and ultraviolet radiation (UVR; 280-400 nm) by altering the thickness of the coccolith layer. Here we show that in the absence of UVR, the calcification rates in E. huxleyi decrease under lowered pH levels (pHNBS of 7.9 and 7.6; pCO2 of 81 and 178 Pa or 804 and 1759 ppmv, respectively) leading to thinned coccolith layers, whereas photosynthetic carbon fixation was slightly enhanced at pH 7.9 but remained unaffected at pH 7.6. Exposure to UVR (UV-A 19.5 W m-2, UV-B 0.67 W m-2) in addition to PAR (88.5 W m22), however, results in significant inhibition of both photosynthesis and calcification, and these rates are further inhibited with increasing acidification. The combined effects of UVR and seawater acidification resulted in the inhibition of calcification rates by 96% and 99% and that of photosynthesis by 6% and 15%, at pH 7.9 and 7.6, respectively. This differential inhibition of calcification and photosynthesis leads to significant reduction of the ratio of calcification to photosynthesis. Seawater acidification enhanced the transmission of harmful UVR by about 26% through a reduction of the coccolith layer of 31%. Our data indicate that the effect of a high-CO2 and low-pH ocean on E. huxleyi (because of reduced calcification associated with changes in the carbonate system) enhances the detrimental effects of UVR on the main pelagic calcifier.Fil: Gao, Kunshan. Xiamen University; ChinaFil: Ruan, Zuoxi. Shantou University; ChinaFil: Villafañe, Virginia Estela. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fundación Playa Unión. Estación de Fotobiología Playa Unión; ArgentinaFil: Gattuso, Jean-Pierre. Centre National de la Recherche Scientifique; Francia. Université Pierre et Marie Curie; FranciaFil: Helbling, Eduardo Walter. Fundación Playa Unión. Estación de Fotobiología Playa Unión; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaAmerican Society of Limnology and Oceanography2009-12info: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/11336/97365Gao, Kunshan; Ruan, Zuoxi; Villafañe, Virginia Estela; Gattuso, Jean-Pierre; Helbling, Eduardo Walter; Ocean acidification exacerbates the effect of UV radiation on the calcifying phytoplankter Emiliania huxleyi; American Society of Limnology and Oceanography; Limnology and Oceanography; 54; 6; 12-2009; 1855-18620024-3590CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://aslopubs.onlinelibrary.wiley.com/doi/abs/10.4319/lo.2009.54.6.1855info:eu-repo/semantics/altIdentifier/doi/10.4319/lo.2009.54.6.1855info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:44:49Zoai:ri.conicet.gov.ar:11336/97365instacron: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:34982025-09-03 09:44:49.834CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Ocean acidification exacerbates the effect of UV radiation on the calcifying phytoplankter Emiliania huxleyi
title Ocean acidification exacerbates the effect of UV radiation on the calcifying phytoplankter Emiliania huxleyi
spellingShingle Ocean acidification exacerbates the effect of UV radiation on the calcifying phytoplankter Emiliania huxleyi
Gao, Kunshan
UVR
ACIDIFICATION
PHYTOPLANKTON
title_short Ocean acidification exacerbates the effect of UV radiation on the calcifying phytoplankter Emiliania huxleyi
title_full Ocean acidification exacerbates the effect of UV radiation on the calcifying phytoplankter Emiliania huxleyi
title_fullStr Ocean acidification exacerbates the effect of UV radiation on the calcifying phytoplankter Emiliania huxleyi
title_full_unstemmed Ocean acidification exacerbates the effect of UV radiation on the calcifying phytoplankter Emiliania huxleyi
title_sort Ocean acidification exacerbates the effect of UV radiation on the calcifying phytoplankter Emiliania huxleyi
dc.creator.none.fl_str_mv Gao, Kunshan
Ruan, Zuoxi
Villafañe, Virginia Estela
Gattuso, Jean-Pierre
Helbling, Eduardo Walter
author Gao, Kunshan
author_facet Gao, Kunshan
Ruan, Zuoxi
Villafañe, Virginia Estela
Gattuso, Jean-Pierre
Helbling, Eduardo Walter
author_role author
author2 Ruan, Zuoxi
Villafañe, Virginia Estela
Gattuso, Jean-Pierre
Helbling, Eduardo Walter
author2_role author
author
author
author
dc.subject.none.fl_str_mv UVR
ACIDIFICATION
PHYTOPLANKTON
topic UVR
ACIDIFICATION
PHYTOPLANKTON
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Increasing atmospheric CO2 concentration affects calcification in most planktonic calcifiers. Both reduced or stimulated calcification under high CO2 have been reported in the widespread coccolithophore Emiliania huxleyi. This might affect the response of cells to photosynthetically active radiation (PAR; 400-700 nm) and ultraviolet radiation (UVR; 280-400 nm) by altering the thickness of the coccolith layer. Here we show that in the absence of UVR, the calcification rates in E. huxleyi decrease under lowered pH levels (pHNBS of 7.9 and 7.6; pCO2 of 81 and 178 Pa or 804 and 1759 ppmv, respectively) leading to thinned coccolith layers, whereas photosynthetic carbon fixation was slightly enhanced at pH 7.9 but remained unaffected at pH 7.6. Exposure to UVR (UV-A 19.5 W m-2, UV-B 0.67 W m-2) in addition to PAR (88.5 W m22), however, results in significant inhibition of both photosynthesis and calcification, and these rates are further inhibited with increasing acidification. The combined effects of UVR and seawater acidification resulted in the inhibition of calcification rates by 96% and 99% and that of photosynthesis by 6% and 15%, at pH 7.9 and 7.6, respectively. This differential inhibition of calcification and photosynthesis leads to significant reduction of the ratio of calcification to photosynthesis. Seawater acidification enhanced the transmission of harmful UVR by about 26% through a reduction of the coccolith layer of 31%. Our data indicate that the effect of a high-CO2 and low-pH ocean on E. huxleyi (because of reduced calcification associated with changes in the carbonate system) enhances the detrimental effects of UVR on the main pelagic calcifier.
Fil: Gao, Kunshan. Xiamen University; China
Fil: Ruan, Zuoxi. Shantou University; China
Fil: Villafañe, Virginia Estela. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fundación Playa Unión. Estación de Fotobiología Playa Unión; Argentina
Fil: Gattuso, Jean-Pierre. Centre National de la Recherche Scientifique; Francia. Université Pierre et Marie Curie; Francia
Fil: Helbling, Eduardo Walter. Fundación Playa Unión. Estación de Fotobiología Playa Unión; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description Increasing atmospheric CO2 concentration affects calcification in most planktonic calcifiers. Both reduced or stimulated calcification under high CO2 have been reported in the widespread coccolithophore Emiliania huxleyi. This might affect the response of cells to photosynthetically active radiation (PAR; 400-700 nm) and ultraviolet radiation (UVR; 280-400 nm) by altering the thickness of the coccolith layer. Here we show that in the absence of UVR, the calcification rates in E. huxleyi decrease under lowered pH levels (pHNBS of 7.9 and 7.6; pCO2 of 81 and 178 Pa or 804 and 1759 ppmv, respectively) leading to thinned coccolith layers, whereas photosynthetic carbon fixation was slightly enhanced at pH 7.9 but remained unaffected at pH 7.6. Exposure to UVR (UV-A 19.5 W m-2, UV-B 0.67 W m-2) in addition to PAR (88.5 W m22), however, results in significant inhibition of both photosynthesis and calcification, and these rates are further inhibited with increasing acidification. The combined effects of UVR and seawater acidification resulted in the inhibition of calcification rates by 96% and 99% and that of photosynthesis by 6% and 15%, at pH 7.9 and 7.6, respectively. This differential inhibition of calcification and photosynthesis leads to significant reduction of the ratio of calcification to photosynthesis. Seawater acidification enhanced the transmission of harmful UVR by about 26% through a reduction of the coccolith layer of 31%. Our data indicate that the effect of a high-CO2 and low-pH ocean on E. huxleyi (because of reduced calcification associated with changes in the carbonate system) enhances the detrimental effects of UVR on the main pelagic calcifier.
publishDate 2009
dc.date.none.fl_str_mv 2009-12
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/11336/97365
Gao, Kunshan; Ruan, Zuoxi; Villafañe, Virginia Estela; Gattuso, Jean-Pierre; Helbling, Eduardo Walter; Ocean acidification exacerbates the effect of UV radiation on the calcifying phytoplankter Emiliania huxleyi; American Society of Limnology and Oceanography; Limnology and Oceanography; 54; 6; 12-2009; 1855-1862
0024-3590
CONICET Digital
CONICET
url http://hdl.handle.net/11336/97365
identifier_str_mv Gao, Kunshan; Ruan, Zuoxi; Villafañe, Virginia Estela; Gattuso, Jean-Pierre; Helbling, Eduardo Walter; Ocean acidification exacerbates the effect of UV radiation on the calcifying phytoplankter Emiliania huxleyi; American Society of Limnology and Oceanography; Limnology and Oceanography; 54; 6; 12-2009; 1855-1862
0024-3590
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://aslopubs.onlinelibrary.wiley.com/doi/abs/10.4319/lo.2009.54.6.1855
info:eu-repo/semantics/altIdentifier/doi/10.4319/lo.2009.54.6.1855
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 American Society of Limnology and Oceanography
publisher.none.fl_str_mv American Society of Limnology and Oceanography
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 13.13397

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