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Oxygen isotope temperature calibrations for modern Tridacna shells in western Pacific
Wang, Guozhen1,4; Yan, Hong1,2,3; Liu, Chengcheng1,5; Han, Tao1; Zhou, Pengchao1; Zhao, Nanyu1; Wen, Hanfeng1; Fei, Haobai1; Dodson, John1,6
Corresponding AuthorYan, Hong(yanhong@ieecas.cn)
2022-01-06
Source PublicationCORAL REEFS
ISSN0722-4028
Pages18
AbstractThe 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.
KeywordTridacna delta O-18 SST Growth effect Western Pacific
DOI10.1007/s00338-021-02208-5
WOS KeywordSEA-SURFACE SALINITY ; SOUTH CHINA SEA ; GIANT CLAMS ; CORAL DELTA-O-18 ; STABLE-ISOTOPE ; ENSO VARIABILITY ; REEF ENVIRONMENT ; GIGAS BIVALVES ; TRACE-ELEMENT ; NEW-GUINEA
Indexed BySCI ; SCI
Language英语
Funding ProjectNational 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 Research AreaMarine & Freshwater Biology
Funding OrganizationNational Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences ; Light of West China'' Program of the Chinese Academy of Sciences
WOS SubjectMarine & Freshwater Biology
WOS IDWOS:000739759600001
PublisherSPRINGER
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/17372
Collection古环境研究室
第四纪科学与全球变化卓越创新中心
Corresponding AuthorYan, Hong
Affiliation1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
2.Chinese Acad Sci, Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China
3.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710049, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.Xian Inst Innovat Earth Environm Res, Xian 710061, Peoples R China
6.Univ Wollongong, Sch Earth Atmospher & Life Sci, Wollongong, NSW 2500, Australia
Recommended Citation
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.
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