{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1363670320454962304.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1029/2005gc001015"}},{"identifier":{"@type":"URI","@value":"http://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2F2005GC001015"}},{"identifier":{"@type":"URI","@value":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2005GC001015"}}],"dc:title":[{"@value":"Impact of biomineralization processes on the Mg content of foraminiferal shells: A biological perspective"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:p>The Mg/Ca ratio in foraminiferal shells is widely used as a proxy for paleotemperatures. Nevertheless, it seems that the basic Mg content of foraminifera is determined by biological factors, as can be concluded from the large inter species and intrashell variability and the frequent deviations from inorganic behavior. This paper discusses three possible ways by which foraminifera can control or modify the Mg content in their shell: (1) involvement of organic matrix in the precipitation process that may alter the partition coefficient of Mg in biogenic calcite, (2) controlled conversion of transient amorphous phases to calcite, and (3) modification of the Mg concentration in the parent solution from which the crystals precipitate. The first two mechanisms are probably responsible for the precipitation of high‐Mg calcite phases (whole shell or sublayers), while the third mechanism leads to the formation of low‐Mg calcite phases. We propose a model adapted from epithelial cells that allows massive Mg<jats:sup>2+</jats:sup> removal from the biomineralization site. This model is especially relevant to the planktonic and deep benthic low‐Mg foraminifera that are frequently used for paleotemperature reconstructions. We discuss the possible biological roles of Mg in the shell in terms of the calcite polymorph conservation, the in vivo chemical stability of the shell, the functions of Mg as a stabilizer of transient phases and as a controlling agent of the precipitation process. Several temperature sensitive biological processes that may influence the Mg/Ca ratio of the shell are suggested and a model that combines biogenic and inorganic considerations is presented. The model uses Mg heterogeneity in the shell together with temperature response (biologic and inorganic) of biomineralization processes, to account for the deviation of planktonic foraminifera from inorganic calcite at equilibrium with seawater.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1383670320454962304","@type":"Researcher","foaf:name":[{"@value":"Shmuel Bentov"}],"jpcoar:affiliationName":[{"@value":"Institute of Earth Sciences The Hebrew University of Jerusalem  Jerusalem 91904 Israel"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320454962305","@type":"Researcher","foaf:name":[{"@value":"Jonathan Erez"}],"jpcoar:affiliationName":[{"@value":"Institute of Earth Sciences The Hebrew University of Jerusalem  Jerusalem 91904 Israel"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"15252027"},{"@type":"EISSN","@value":"15252027"}],"prism:publicationName":[{"@value":"Geochemistry, Geophysics, Geosystems"}],"dc:publisher":[{"@value":"American Geophysical Union (AGU)"}],"prism:publicationDate":"2006-01","prism:volume":"7","prism:number":"1","prism:startingPage":"Q01P08"},"reviewed":"false","dc:rights":["http://onlinelibrary.wiley.com/termsAndConditions#vor"],"url":[{"@id":"http://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1029%2F2005GC001015"},{"@id":"https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2005GC001015"}],"createdAt":"2006-01-25","modifiedAt":"2023-10-12","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360004229945252864","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Tuning the Stability of CaCO<sub>3</sub> Crystals with Magnesium Ions for the Formation of Aragonite Thin Films on Organic Polymer Templates"}]},{"@id":"https://cir.nii.ac.jp/crid/1360004232352988672","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Chamber formation and trace element distribution in the calcite walls of laboratory cultured planktonic foraminifera ( Globigerina bulloides and Globigerinoides ruber )"}]},{"@id":"https://cir.nii.ac.jp/crid/1360283691779487872","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Proton pumping accompanies calcification in foraminifera"}]},{"@id":"https://cir.nii.ac.jp/crid/1360285704784295040","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"The Impacts of Seawater Mg/Ca and Temperature on Element Incorporation in Benthic Foraminiferal Calcite"}]},{"@id":"https://cir.nii.ac.jp/crid/1360285707402306048","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Seismic anisotropy in the mantle transition zone induced by shear deformation of wadsleyite"}]},{"@id":"https://cir.nii.ac.jp/crid/1360567179761015936","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Incorporation of Mg, Sr, Ba, U, and B in High‐Mg Calcite Benthic Foraminifers Cultured Under Controlled <i>p</i>CO<sub>2</sub>"}]},{"@id":"https://cir.nii.ac.jp/crid/1360567189393733760","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Reading the Fine Print: Ultra-Microstructures of Foraminiferal Calcification Revealed Using Focused Ion Beam Microscopy"}]},{"@id":"https://cir.nii.ac.jp/crid/1360861704763900672","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Palaeoceanography of the Japan Sea Across the Mid‐Pleistocene Transition: Insights From IODP Exp. 346, Site U1427"}]},{"@id":"https://cir.nii.ac.jp/crid/1361975843009817472","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Magnesium Isotopic Composition of Tests of Large Benthic Foraminifers: Implications for Biomineralization"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001206238668416","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Mg/Ca thermometry of planktonic foraminifera and application to paleoceanography"},{"@language":"ja","@value":"浮遊性有孔虫Mg/Ca古水温計の現状・課題と古海洋解析への応用例"},{"@language":"ja-Kana","@value":"フユウセイ ユウコウチュウ Mg Ca コ スイオンケイ ノ ゲンジョウ カダイ ト コ カイヨウ カイセキ エ ノ オウヨウレイ"},{"@value":"Mg/Ca thermometory of planktonic foraminifera and application to paleoceanography (in Japanese with English abstract)"}]},{"@id":"https://cir.nii.ac.jp/crid/2050025942136465280","@type":"Article","resourceType":"学術雑誌論文(journal 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