{"refrec":{"BRefID":243781,"RR":"<b>Mewes, A.; Langer, G.; de Nooijer, L.J.; Bijma, J.; Reichart, G.J.</b> (2014). Effect of different seawater Mg<sup>2+</sup> concentrations on calcification in two benthic foraminifers. <i>Mar. Micropaleontol. 113</i>: 56–64. <a href=\"http://dx.doi.org/10.1016/j.marmicro.2014.09.003\" target=\"_blank\">dx.doi.org/10.1016/j.marmicro.2014.09.003</a>","BEntID":235480,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":null,"RefStringPartII":". <i>Mar. Micropaleontol. 113</i>: 56–64. <a href=\"https://dx.doi.org/10.1016/j.marmicro.2014.09.003\" target=\"_blank\">https://dx.doi.org/10.1016/j.marmicro.2014.09.003</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Mewes, A.; Langer, G.; de Nooijer, L.J.; Bijma, J.; Reichart, G.J.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Mewes, A. <i>et al.</i>","Englishabstract":"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","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Effect of different seawater Mg<sup>2+</sup> concentrations on calcification in two benthic foraminifers","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 01:33:17.368041","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"Mg/Ca; Proxy; LA-ICP-MS; Culture experiment; Biomineralization; Mg partitioning ","OtherDescriptors":null,"Notes":null,"AnaPub":2014,"MonPub":null,"DateUpdate":"2015-09-28","DateCreate":"2015-01-06","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000345879400006","VABBcode":null,"OpenAcc":1,"DOI":"10.1016/j.marmicro.2014.09.003"},"refs":null,"anarec":{"AnaID":243781,"PubliDate":2014,"Pagination":"56–64","XtraPublOfAnaID":null,"ISBN":null,"Volume":"113","Issue":null,"BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43516,"SerRR":"Marine Micropaleontology. 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