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dc.contributor.authorStewart, Joseph A.
dc.contributor.authorRobinson, Laura F.
dc.contributor.authorDay, Russell D.
dc.contributor.authorStrawson, Ivo
dc.contributor.authorBurke, Andrea
dc.contributor.authorRae, James W.B.
dc.contributor.authorSpooner, Peter T.
dc.contributor.authorSamperiz, Ana
dc.contributor.authorEtnoyer, Peter J.
dc.contributor.authorWilliams, Branwen
dc.contributor.authorPaytan, Adina
dc.contributor.authorLeng, Melanie J.
dc.contributor.authorHäussermann, Vreni
dc.contributor.authorWickes, Leslie N.
dc.contributor.authorBratt, Rachael
dc.contributor.authorPryer, Helena
dc.identifier.citationStewart , J A , Robinson , L F , Day , R D , Strawson , I , Burke , A , Rae , J W B , Spooner , P T , Samperiz , A , Etnoyer , P J , Williams , B , Paytan , A , Leng , M J , Häussermann , V , Wickes , L N , Bratt , R & Pryer , H 2020 , ' Refining trace metal temperature proxies in cold-water scleractinian and stylasterid corals ' , Earth and Planetary Science Letters , vol. 545 , 116412 .
dc.identifier.otherPURE: 268444396
dc.identifier.otherPURE UUID: bad8562d-876f-4015-991d-1b85c7020a0d
dc.identifier.otherRIS: urn:2AECF48DE4BF189465B2DF1B0C4DF15A
dc.identifier.otherRIS: urn:2AECF48DE4BF189465B2DF1B0C4DF15A
dc.identifier.otherORCID: /0000-0002-3754-1498/work/76387018
dc.identifier.otherORCID: /0000-0003-3904-2526/work/76387026
dc.identifier.otherScopus: 85086805280
dc.identifier.otherWOS: 000549183200012
dc.descriptionFunding was provided by an Antarctic Bursary awarded to J.A.S., ERC and NERC grants awarded to L.F.R. (278705, NE/S001743/1, NE/R005117/1) and L.F.R. and J.W.B.R. (NE/N003861/1), and a NERC Stable isotope Grant.en
dc.description.abstractThe Li/Mg, Sr/Ca and oxygen isotopic (δ18O) compositions of many marine biogenic carbonates are sensitive to seawater temperature. Corals, as cosmopolitan marine taxa with carbonate skeletons that can be precisely dated, represent ideal hosts for these geochemical proxies. However, efforts to calibrate and refine temperature proxies in cold-water corals (<20◦C) remain limited. Here we present skeletal Li/Mg, Sr/Ca, δ18O and carbon isotope (δ13C) data from live-collected specimens of aragonitic scleractinian corals (Balanophyllia, Caryophyllia, Desmophyllum, Enallopsammia, Flabellum, Lophelia, and Vaughanella), both aragonitic and high-Mg calcitic stylasterid genera (Stylaster and Errina), and shallow-water high-Mg calcite crustose coralline algae (Lithophyllum, Hydrolithon, and Neogoniolithon). We interpret these data in conjunction with results from previously explored taxa including aragonitic zooxanthellate scleractinia and foraminifera, and high-Mg calcite octocorals. We show that Li/Mg ratios covary most strongly with seawater temperature, both for aragonitic and high-Mg calcitic taxa, making for reliable and universal seawater temperature proxies. Combining all of our biogenic aragonitic Li/Mg data with previous calibration efforts we report a refined relationship to temperature: Li/MgAll Aragonite=5.42 exp(−0.050 ×T(◦C))(R2=0.97). This calibration now permits paleo-temperature reconstruction to better than ±3.4◦C (95% prediction intervals) across biogenic aragonites, regardless of taxon, from 0 to 30◦C. For taxa in this study, aragonitic stylasterid Li/Mg offers the most robust temperature proxy (Li/MgStylasterid(Arag)=5.64 exp(−0.046 ×T(◦C))(R2=0.95)) with a reproducibility of ±2.3◦C. For the first time, we show that high-Mg calcites have a similar exponential relationship with temperature, but with a lower intercept value (Li/Mg =0.63 exp(−0.050 ×T(◦C)(R2=0.92)). This calibration opens the possibility of temperature reconstruction using high-Mg calcite corals and coralline algae. The commonality in the relationship between Li/Mg and temperature transcends phylogeny and suggests a similar abiogenic trace metal incorporation mechanism.
dc.relation.ispartofEarth and Planetary Science Lettersen
dc.rightsCopyright © 2020 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (
dc.subjectSeawater temperatureen
dc.subjectGE Environmental Sciencesen
dc.subjectSDG 14 - Life Below Wateren
dc.titleRefining trace metal temperature proxies in cold-water scleractinian and stylasterid coralsen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Earth & Environmental Sciencesen
dc.contributor.institutionUniversity of St Andrews. St Andrews Isotope Geochemistryen
dc.description.statusPeer revieweden

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