气候变化领域集成服务门户(CCPortal): Refining trace metal temperature proxies in cold-water scleractinian and stylasterid corals

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DOI	10.1016/j.epsl.2020.116412
	Refining trace metal temperature proxies in cold-water scleractinian and stylasterid corals
	Stewart 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.
发表日期	2020
ISSN	0012821X
卷号	545
英文摘要	The 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 = 5.42exp⁡(−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) = 5.64exp⁡(−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 = 0.63exp⁡(−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. © 2020 The Author(s)
关键词	Li/Mg mineralogy Scleractinia seawater temperature Stylasteridae
英文关键词	Algae; Atmospheric temperature; Calcite; Calibration; Carbonate minerals; Isotopes; Metal refining; Seawater; Biogenic carbonates; Cold-water corals; Crustose coralline algae; Geochemical proxies; Prediction interval; Scleractinian corals; Seawater temperature; Temperature reconstruction; Trace elements; aragonite; biogenic mineral; carbon isotope; coral; coralline alga; foraminifera; isotopic composition; oxygen isotope; paleotemperature; phylogeny; reconstruction; seawater; trace metal; water temperature; algae; Anthozoa; Balanophyllia; Caryophyllia; Desmophyllum; Enallopsammia; Errina; Flabellum; Foraminifera; Hydrolithon; Lithophyllum; Lophelia; Neogoniolithon; Scleractinia; Stylaster; Stylasteridae; Vaughanella
语种	英语
来源期刊	Earth and Planetary Science Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/202910
作者单位	School of Earth Sci. Univ. of Bristol, Queens Road, Bristol, BS8 1RJ, United Kingdom; School of Earth & Environmental Sci., Univ. of St AndrewsKY16 9AL, United Kingdom; National Institute of Standards and Technology, Chemical Science Division, Hollings Marine Laboratory, Charleston, SC, United States; Marine Science and Nautical Training Academy (MANTA), 520 Folly Rd., Charleston, SC 29412, United States; Cardiff University, School of Earth & Ocean Sciences, Cardiff, CF10 3AT, United Kingdom; Department of Earth Science, University College London, London, United Kingdom; NOAA National Centers for Coastal Ocean Science, Charleston, SC 29412, United States; Keck Science Department, Claremont McKenna-Pitzer-Scripps Colleges, Claremont, CA 91711, United States; Institute of Marine Sci., University of California, Santa Cruz, Santa Cruz, CA 95064, United States; British Geological Survey, Keyworth, Nottingham, NG12 5GG, United Kingdom; School of Biosciences, University of Nottingham, Loughborough, LE12 5RD,...
推荐引用方式 GB/T 7714	Stewart J.A.,Robinson L.F.,Day R.D.,et al. Refining trace metal temperature proxies in cold-water scleractinian and stylasterid corals[J],2020,545.
APA	Stewart J.A..,Robinson L.F..,Day R.D..,Strawson I..,Burke A..,...&Pryer H..(2020).Refining trace metal temperature proxies in cold-water scleractinian and stylasterid corals.Earth and Planetary Science Letters,545.
MLA	Stewart J.A.,et al."Refining trace metal temperature proxies in cold-water scleractinian and stylasterid corals".Earth and Planetary Science Letters 545(2020).