气候变化领域集成服务门户(CCPortal): Calibration of shell δ18O from the common whelk Buccinum undatum highlights potential for palaeoenvironmental reconstruction

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DOI	10.1016/j.palaeo.2020.109995
	Calibration of shell δ18O from the common whelk Buccinum undatum highlights potential for palaeoenvironmental reconstruction
	Hollyman P.R.; Leng M.J.; Chenery S.R.N.; Sloane H.J.; Richardson C.A.
发表日期	2020
ISSN	0031-0182
卷号	560
英文摘要	The common whelk, Buccinum undatum, is a commercially important gastropod found throughout the North Atlantic. One method of age and life history analysis for gastropod species is the use of oxygen isotope ratio (δ18O) measurements from their shells, which is a well-established technique for the reconstruction of historical seawater temperatures at the time of shell biomineralization. Palaeotemperature calibrations have been developed for different types of calcium carbonate as well as species-specific equations to produce the most accurate seawater temperature reconstructions. Here we investigate the four-layer internal structure of B. undatum shells and confirm an aragonite composition using Micro-Raman Spectroscopy (MRS). We then calibrate a species-specific palaeotemperature equation for this gastropod species. This was achieved through the isotopic analysis of shells from laboratory reared specimens of known provenance reared at specific seawater temperatures to produce the following: t(°C) = 14.96 (± 0.15) – 4.94 (± 0.22) x (δ18Oshell – δ18Owater) The calibrated equation differs significantly from previously published data derived from both aragonite and calcite. An offset of 1.04‰ (± 0.41‰) was discovered between observed δ18OShell values and those expected under equilibrium, suggesting a species-specific vital effect. The calibrated equation was used to reconstruct accurate, high resolution historical seawater temperatures from three sites across the U.K. (Shetland, the Menai Strait and Jersey). With this new accurate calibration, both modern and fossil B. undatum shells now have the potential to be employed as high-resolution archives of recent and historical seawater temperature. © 2020 Elsevier B.V.
英文关键词	Micro-Raman spectroscopy; Mollusc shells; Oxygen isotopes; Palaeotemperature; Vital effect
语种	英语
scopus关键词	aragonite; calcium carbonate; fossil record; mollusc; oxygen isotope; paleoenvironment; paleotemperature; reconstruction; seawater; shell; Atlantic Ocean; Atlantic Ocean (North); Channel Islands [United Kingdom]; Jersey; Menai Strait; Scotland; Shetland; United Kingdom; Wales; Buccinum undatum; Gastropoda; Mollusca
来源期刊	Palaeogeography, Palaeoclimatology, Palaeoecology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/150302
作者单位	British Antarctic Survey, High Cross, Madingley Road, Cambridge, CB3 0ET, United Kingdom; School of Ocean Sciences, College of College of Environmental Sciences and Engineering, Bangor University, Menai Bridge, Anglesey, LL59 5AB, United Kingdom; National Environmental Isotope Facility, British Geological Survey, Nottingham, NG12 5GG, United Kingdom; School of Biosciences, University of Nottingham, Sutton Bonington Campus, Leicestershire, LE12 5RD, United Kingdom; Centre for Environmental Geochemistry, British Geological Survey, Nottingham, NG12 5GG, United Kingdom
推荐引用方式 GB/T 7714	Hollyman P.R.,Leng M.J.,Chenery S.R.N.,et al. Calibration of shell δ18O from the common whelk Buccinum undatum highlights potential for palaeoenvironmental reconstruction[J],2020,560.
APA	Hollyman P.R.,Leng M.J.,Chenery S.R.N.,Sloane H.J.,&Richardson C.A..(2020).Calibration of shell δ18O from the common whelk Buccinum undatum highlights potential for palaeoenvironmental reconstruction.Palaeogeography, Palaeoclimatology, Palaeoecology,560.
MLA	Hollyman P.R.,et al."Calibration of shell δ18O from the common whelk Buccinum undatum highlights potential for palaeoenvironmental reconstruction".Palaeogeography, Palaeoclimatology, Palaeoecology 560(2020).