Oxygen isotope temperature calibrations for modern Tridacna shells in western Pacific

doi:10.1007/s00338-021-02208-5

	Oxygen isotope temperature calibrations for modern Tridacna shells in western Pacific
	Wang, Guozhen 3,6; Yan, Hong 4,5,6; Liu, Chengcheng 2,6; Han, Tao 6; Zhou, Pengchao 6; Zhao, Nanyu 6; Wen, Hanfeng 6; Fei, Haobai 6; Dodson, John 1,6
刊名	CORAL REEFS
	2022-01-06
页码	18
关键词	Tridacna delta O-18 SST Growth effect Western Pacific
ISSN号	0722-4028
DOI	10.1007/s00338-021-02208-5
通讯作者	Yan, Hong(yanhong@ieecas.cn)
英文摘要	The oxygen isotope ratio of carbonate in Tridacna shell (delta O-18(shell)) is assumed to be precipitated in isotopic equilibrium with surrounding seawater and thus reflects a combination of the Sea surface temperature (SST) and the delta O-18 of seawater (delta O-18(SW)). Accordingly, Tridacna delta O-18(shell) has been widely used for high-resolution paleoclimate reconstructions. However, the influences of interspecific differences, spatial heterogeneity, as well as the "growth effect" on the delta O-18(shell)-SST relationship, have not been fully tested. Here, we present a monthly resolved delta O-18(shell) record of a Tridacna squamosa specimen from Yagong Island, South China sea (SCS). Our results suggested that the monthly resolved delta O-18(shell) from northern SCS was dominated by the seasonal SST variations, which was highly correlated with measured SST after excluding the influence of delta O-18(SW). Then, the SST = f(delta O-18(shell)-delta O-18(SW)) equations of all published monthly delta O-18(shell) records of modern Tridacna from the Indo-Pacific were collected. The resulting investigation revealed that similar SST = f(delta O-18(shell)-delta O-18(SW)) equations for each shell, indicating the minor influences of spatial heterogeneity and interspecific differences. The average equation for Tridacna (Tridacna gigas, Tridacna derasa, Tridacna squamosa, Tridacna maxima and Hippopus hippopus) was SST = - 3.56 +/- 1.26 (delta O-18(shell)-delta O-18(sw)) + 22.44 +/- 2.77 (- 0.28 +/- 0.08 parts per thousand degrees C-1, VPDB) (2 sigma), which was close to the equations set up for other mollusks (without Tridacna) and inorganic aragonite. Finally, although the growth rates varied greatly among Tridacna specimens and within different growth stages of each specimen, we did not find a significant influence of the growth rates on SST = f(delta O-18-(shell) - delta O-18(SW)) equations, indicating that the "growth effect" might have at best a slight impact on the delta O-18(shell) of Tridacna.
资助项目	National Natural Science Foundation of China (NSFC)[41877399] ; National Natural Science Foundation of China (NSFC)[42025304] ; National Natural Science Foundation of China (NSFC)[41991250] ; Chinese Academy of Sciences[XDB40000000] ; Light of West China'' Program of the Chinese Academy of Sciences
WOS关键词	SEA-SURFACE SALINITY ; SOUTH CHINA SEA ; GIANT CLAMS ; CORAL DELTA-O-18 ; STABLE-ISOTOPE ; ENSO VARIABILITY ; REEF ENVIRONMENT ; GIGAS BIVALVES ; TRACE-ELEMENT ; NEW-GUINEA
WOS研究方向	Marine & Freshwater Biology
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000739759600001
资助机构	National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences ; Light of West China'' Program of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/17371]
专题	地球环境研究所_古环境研究室
通讯作者	Yan, Hong
作者单位	1.Univ Wollongong, Sch Earth Atmospher & Life Sci, Wollongong, NSW 2500, Australia 2.Xian Inst Innovat Earth Environm Res, Xian 710061, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710049, Peoples R China 5.Chinese Acad Sci, Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China 6.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
推荐引用方式 GB/T 7714	Wang, Guozhen,Yan, Hong,Liu, Chengcheng,et al. Oxygen isotope temperature calibrations for modern Tridacna shells in western Pacific[J]. CORAL REEFS,2022:18.
APA	Wang, Guozhen.,Yan, Hong.,Liu, Chengcheng.,Han, Tao.,Zhou, Pengchao.,...&Dodson, John.(2022).Oxygen isotope temperature calibrations for modern Tridacna shells in western Pacific.CORAL REEFS,18.
MLA	Wang, Guozhen,et al."Oxygen isotope temperature calibrations for modern Tridacna shells in western Pacific".CORAL REEFS (2022):18.