气候变化领域集成服务门户(CCPortal): An integrated carbon and oxygen isotope approach to reconstructing past environmental variability in the northeast Atlantic Ocean

CCPortal

DOI	10.1016/j.palaeo.2019.03.005
	An integrated carbon and oxygen isotope approach to reconstructing past environmental variability in the northeast Atlantic Ocean
	Reynolds D.J.; Hall I.R.; Slater S.M.
发表日期	2019
ISSN	0031-0182
起始页码	48
结束页码	61
卷号	523
英文摘要	The combined influence of temperature and the isotopic composition of the seawater (δ 18 O w ) often precludes the use of oxygen isotope (δ 18 O) records, derived from marine carbonates, to reconstruct absolute seawater temperatures, without the application of an independent δ 18 O w proxy. Here we investigate the application of carbon isotope records (δ 13 C shell ), derived from the long-lived marine bivalve Glycymeris glycymeris, as a proxy for δ 18 O w variability. Our analyses indicate G. glycymeris δ 13 C shell data derived from growth increments >20 years of age contain strong ontogenetic trends (−0.013‰ yr −1 , R = 0.98, P < 0.001, N = 51). These analyses demonstrate that, coupled with the ontogenetic trends, 54% of the variability in G. glycymeris δ 13 C shell records can be explained by a combination of the marine Suess effect and physical (salinity and riverine input) and biological processes (primary production). The application of these δ 13 C shell data in conjunction with co-registered δ 18 O shell and growth increment width series, each of which have been shown to be sensitive to seawater temperature and primary productivity respectively, can therefore provide new insights into past environmental variability and help constrain uncertainties on reconstructions of past seawater temperature variability. © 2019 The Authors
英文关键词	Carbon isotopes; Dog cockle; Glycymeris glycymeris; Oxygen isotopes; Salinity; Sclerochronology
语种	英语
scopus关键词	bivalve; carbon isotope; growth; isotopic composition; marine environment; oxygen isotope; paleoenvironment; paleotemperature; reconstruction; salinity; seawater; Atlantic Ocean; Atlantic Ocean (Northeast); Bivalvia; Canis familiaris; Glycymeris glycymeris
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/150989
作者单位	School of Earth and Ocean Science, Cardiff University, Park Place, Cardiff, CF10 3AT, United Kingdom; Laboratory of Tree Ring Research, University of Arizona, Tucson, AZ 85721, United States
推荐引用方式 GB/T 7714	Reynolds D.J.,Hall I.R.,Slater S.M.. An integrated carbon and oxygen isotope approach to reconstructing past environmental variability in the northeast Atlantic Ocean[J],2019,523.
APA	Reynolds D.J.,Hall I.R.,&Slater S.M..(2019).An integrated carbon and oxygen isotope approach to reconstructing past environmental variability in the northeast Atlantic Ocean.Palaeogeography, Palaeoclimatology, Palaeoecology,523.
MLA	Reynolds D.J.,et al."An integrated carbon and oxygen isotope approach to reconstructing past environmental variability in the northeast Atlantic Ocean".Palaeogeography, Palaeoclimatology, Palaeoecology 523(2019).