DOI: 10.1002/2015GL066494
论文题名: Deep-sea coral δ13C: A tool to reconstruct the difference between seawater pH and δ11B-derived calcifying fluid pH
作者: Martin P. ; Goodkin N.F. ; Stewart J.A. ; Foster G.L. ; Sikes E.L. ; White H.K. ; Hennige S. ; Roberts J.M.
刊名: Geophysical Research Letters
ISSN: 0094-9509
EISSN: 1944-9240
出版年: 2016
卷: 43, 期: 1 起始页码: 299
结束页码: 308
语种: 英语
英文关键词: boron isotopes
; carbon isotopes
; coral calcification
; coral skeleton
Scopus关键词: Biomineralization
; Boron
; Calibration
; Isotopes
; Musculoskeletal system
; Seawater
; Uncertainty analysis
; Boron isotopes
; Carbon isotopes
; Carbon isotopic composition
; Confidence interval
; Coral skeleton
; Isotopic composition
; Regression predictions
; Scleractinian corals
; Seawater effects
; boron isotope
; calcification
; calibration
; carbon isotope
; confidence interval
; coral
; deep sea
; deuterium
; isotopic composition
; pH
; reconstruction
; sclerite
; seawater
; uncertainty analysis
; Anthozoa
; Scleractinia
英文摘要: The boron isotopic composition (δ11B) of coral skeleton is a proxy for seawater pH. However, δ11B-based pH estimates must account for the pH difference between seawater and the coral calcifying fluid, ΔpH. We report that skeletal δ11B and ΔpH are related to the skeletal carbon isotopic composition (δ13C) in four genera of deep-sea corals collected across a natural pH range of 7.89-8.09, with ΔpH related to δ13C by ΔpH = 0.029 à δ13C + 0.929, r2 = 0.717. Seawater pH can be reconstructed by determining ΔpH from δ13C and subtracting it from the δ11B-derived calcifying fluid pH. The uncertainty for reconstructions is ±0.12 pH units (2 standard deviations) if estimated from regression prediction intervals or between ±0.04 and ±0.06 pH units if estimated from confidence intervals. Our new approach quantifies and corrects for vital effects, offering improved accuracy relative to an existing δ11B versus seawater pH calibration with deep-sea scleractinian corals. © 2015. The Authors. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84957727789&doi=10.1002%2f2015GL066494&partnerID=40&md5=dba3bf16d235caa39aa7f1e2da8968c6
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10472
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Earth Observatory of Singapore, Singapore, Singapore
Recommended Citation:
Martin P.,Goodkin N.F.,Stewart J.A.,et al. Deep-sea coral δ13C: A tool to reconstruct the difference between seawater pH and δ11B-derived calcifying fluid pH[J]. Geophysical Research Letters,2016-01-01,43(1).