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dc.contributor.authorAllison, Nicola
dc.identifier.citationAllison , N 2017 , ' Reconstructing coral calcification fluid dissolved inorganic carbon chemistry from skeletal boron : an exploration of potential controls on coral aragonite B/Ca ' , Heliyon , vol. 3 , no. 8 , e00387 .
dc.identifier.otherPURE: 251006820
dc.identifier.otherPURE UUID: 787f4bfd-c2f8-43d7-9631-b6159b9dbdc4
dc.identifier.otherRIS: urn:3271984573E97ED52AC15CA4C8450AF2
dc.identifier.otherScopus: 85028315474
dc.identifier.otherORCID: /0000-0003-3720-1917/work/42594123
dc.identifier.otherWOS: 000432024600004
dc.descriptionThis work was supported by the UK Natural Environment Research Council (award NE/I022973/1).en
dc.description.abstractThe boron geochemistry of coral skeletons reflects the dissolved inorganic carbon (DIC) chemistry of the calcification fluid from which the skeletons precipitates and may be a valuable tool to investigate the effects of climate change on coral calcification. In this paper I calculate the predicted B/Ca of aragonite precipitating from seawater based fluids as a function of pH, [DIC] and [Ca2+]. I consider how different co-precipitating DIC species affect aragonite B/Ca and also estimate the impact of variations in the B(OH)4−/co-precipitating DIC aragonite partition coefficient (KD), which may be associated with changes in the DIC and Ca2+ chemistry of the calcification fluid. The coral skeletal B/Ca versus calcification fluid pH relationships reported previously can be reproduced by estimating B(OH)4− and co-precipitating DIC speciation as a function of pHCF and assuming that KD are constant i.e. unaffected by calcification fluid saturation state. Assuming that B(OH)4− co-precipitates with CO32−, then observed patterns can be reproduced by a fluid with approximately constant [DIC] i.e. increasing pHCF concentrates CO32−, as a function of DIC speciation. Assuming that B(OH)4− co-precipitates with HCO3− only or CO32− + HCO3− then the observed patterns can be reproduced if [DIC]CF and pHCF are positively related i.e. if DIC is increasingly concentrated in the calcification fluid at higher pHCF probably by CO2 diffusion into the calcification site.
dc.rights© 2017 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (
dc.subjectQE Geologyen
dc.subjectQD Chemistryen
dc.subjectGC Oceanographyen
dc.titleReconstructing coral calcification fluid dissolved inorganic carbon chemistry from skeletal boron : an exploration of potential controls on coral aragonite B/Caen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.School of Earth & Environmental Sciencesen
dc.contributor.institutionUniversity of St Andrews.Marine Alliance for Science & Technology Scotlanden
dc.contributor.institutionUniversity of St Andrews.Scottish Oceans Instituteen
dc.contributor.institutionUniversity of St Andrews.St Andrews Isotope Geochemistryen
dc.description.statusPeer revieweden

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