Effect of different seawater Mg2+ concentrations on calcification in two benthic foraminifers

Magnesium, incorporated in foraminiferal calcite (Mg/CaCC), is used intensively to reconstruct past seawater temperatures but, in addition to temperature, the Mg/CaCC of foraminiferal tests also depends on the ratio of Mg and Ca in seawater (Mg/CaSW). The physiological mechanisms responsible for the...

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Autores: Mewes, Antje, Langer, Gerald|||0000-0002-7211-4889, De Nooijer, Lennart Jan, Bijma, Jelle|||0000-0003-4371-1438, Reichart, Gert-Jan|||0000-0002-7256-2243
Tipo de recurso: artículo
Fecha de publicación:2014
País:España
Institución:Universitat Autònoma de Barcelona
Repositorio:Dipòsit Digital de Documents de la UAB
Idioma:inglés
OAI Identifier:oai:ddd.uab.cat:293537
Acceso en línea:https://ddd.uab.cat/record/293537
https://dx.doi.org/urn:doi:10.1016/j.marmicro.2014.09.003
Access Level:acceso abierto
Palabra clave:Biomineralization
Culture experiment
LA-ICP-MS
Mg partitioning
Mg/Ca
Proxy
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spelling Effect of different seawater Mg2+ concentrations on calcification in two benthic foraminifersMewes, AntjeLanger, Gerald|||0000-0002-7211-4889De Nooijer, Lennart JanBijma, Jelle|||0000-0003-4371-1438Reichart, Gert-Jan|||0000-0002-7256-2243BiomineralizationCulture experimentLA-ICP-MSMg partitioningMg/CaProxyMagnesium, incorporated in foraminiferal calcite (Mg/CaCC), is used intensively to reconstruct past seawater temperatures but, in addition to temperature, the Mg/CaCC of foraminiferal tests also depends on the ratio of Mg and Ca in seawater (Mg/CaSW). The physiological mechanisms responsible for these proxy relationships are still unknown. This culture study investigates the impact of different seawater [Mg2+] on calcification in two benthic foraminiferal species precipitating contrasting Mg/CaCC: Ammonia aomoriensis, producing low-Mg calcite and Amphistegina lessonii, producing intermediate-Mg calcite. Foraminiferal growth and test thickness were determined and, Mg/Ca was analyzed using Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry (LA-ICP-MS). Results show that at present-day seawater Mg/CaSW of ~5, both species have highest growth rates, reflecting their adaptation to modern seawater element concentrations. Test thickness is not significantly affected by different Mg/CaSW. The relationship between Mg/CaSW and Mg/CaCC shows a distinct positive y-axis intercept, possibly reflecting at least two processes involved in foraminiferal biomineralization. The associated Mg partition (DMg) changes non-linearly with increasing Mg/CaSW, hence suggesting that the DMg is best described by an exponential function approaching an asymptote. 22014-01-0120142014-01-01Articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/293537https://dx.doi.org/urn:doi:10.1016/j.marmicro.2014.09.003reponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengEuropean Commission https://doi.org/10.13039/501100000780 211384European Commission https://doi.org/10.13039/501100000780 265103European Commission https://doi.org/10.13039/501100000780 267931open accesshttp://purl.org/coar/access_right/c_abf2Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.https://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:ddd.uab.cat:2935372026-06-06T12:50:31Z
dc.title.none.fl_str_mv Effect of different seawater Mg2+ concentrations on calcification in two benthic foraminifers
title Effect of different seawater Mg2+ concentrations on calcification in two benthic foraminifers
spellingShingle Effect of different seawater Mg2+ concentrations on calcification in two benthic foraminifers
Mewes, Antje
Biomineralization
Culture experiment
LA-ICP-MS
Mg partitioning
Mg/Ca
Proxy
title_short Effect of different seawater Mg2+ concentrations on calcification in two benthic foraminifers
title_full Effect of different seawater Mg2+ concentrations on calcification in two benthic foraminifers
title_fullStr Effect of different seawater Mg2+ concentrations on calcification in two benthic foraminifers
title_full_unstemmed Effect of different seawater Mg2+ concentrations on calcification in two benthic foraminifers
title_sort Effect of different seawater Mg2+ concentrations on calcification in two benthic foraminifers
dc.creator.none.fl_str_mv Mewes, Antje
Langer, Gerald|||0000-0002-7211-4889
De Nooijer, Lennart Jan
Bijma, Jelle|||0000-0003-4371-1438
Reichart, Gert-Jan|||0000-0002-7256-2243
author Mewes, Antje
author_facet Mewes, Antje
Langer, Gerald|||0000-0002-7211-4889
De Nooijer, Lennart Jan
Bijma, Jelle|||0000-0003-4371-1438
Reichart, Gert-Jan|||0000-0002-7256-2243
author_role author
author2 Langer, Gerald|||0000-0002-7211-4889
De Nooijer, Lennart Jan
Bijma, Jelle|||0000-0003-4371-1438
Reichart, Gert-Jan|||0000-0002-7256-2243
author2_role author
author
author
author
dc.subject.none.fl_str_mv Biomineralization
Culture experiment
LA-ICP-MS
Mg partitioning
Mg/Ca
Proxy
topic Biomineralization
Culture experiment
LA-ICP-MS
Mg partitioning
Mg/Ca
Proxy
description Magnesium, incorporated in foraminiferal calcite (Mg/CaCC), is used intensively to reconstruct past seawater temperatures but, in addition to temperature, the Mg/CaCC of foraminiferal tests also depends on the ratio of Mg and Ca in seawater (Mg/CaSW). The physiological mechanisms responsible for these proxy relationships are still unknown. This culture study investigates the impact of different seawater [Mg2+] on calcification in two benthic foraminiferal species precipitating contrasting Mg/CaCC: Ammonia aomoriensis, producing low-Mg calcite and Amphistegina lessonii, producing intermediate-Mg calcite. Foraminiferal growth and test thickness were determined and, Mg/Ca was analyzed using Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry (LA-ICP-MS). Results show that at present-day seawater Mg/CaSW of ~5, both species have highest growth rates, reflecting their adaptation to modern seawater element concentrations. Test thickness is not significantly affected by different Mg/CaSW. The relationship between Mg/CaSW and Mg/CaCC shows a distinct positive y-axis intercept, possibly reflecting at least two processes involved in foraminiferal biomineralization. The associated Mg partition (DMg) changes non-linearly with increasing Mg/CaSW, hence suggesting that the DMg is best described by an exponential function approaching an asymptote.
publishDate 2014
dc.date.none.fl_str_mv 2
2014-01-01
2014
2014-01-01
dc.type.none.fl_str_mv Article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://ddd.uab.cat/record/293537
https://dx.doi.org/urn:doi:10.1016/j.marmicro.2014.09.003
url https://ddd.uab.cat/record/293537
https://dx.doi.org/urn:doi:10.1016/j.marmicro.2014.09.003
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv European Commission https://doi.org/10.13039/501100000780 211384
European Commission https://doi.org/10.13039/501100000780 265103
European Commission https://doi.org/10.13039/501100000780 267931
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Dipòsit Digital de Documents de la UAB
instname:Universitat Autònoma de Barcelona
instname_str Universitat Autònoma de Barcelona
reponame_str Dipòsit Digital de Documents de la UAB
collection Dipòsit Digital de Documents de la UAB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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