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The influence of seasonal calcification depth change on the planktonic foraminiferal stable oxygen isotope signal
Yu, Zhoufei(俞宙菲)1; Li, Baohua(李保华)1,2,3; Li, Hongliang4; Zhang, Jingling4,5; Chen, Jianfang4
2022-06-15
Source PublicationGEOCHIMICA ET COSMOCHIMICA ACTA
ISSN0016-7037
Volume327Pages:34-52
Abstract

Seasonal changes in temperature and habitat migration both leave large imprints on the stable oxygen isotope composition (818O) of planktonic foraminiferal tests, but little is known about how much the depth habitat change affects the calcite 818O on seasonal timescales, potentially introducing numerous errors to the study of seasonality applied individual foraminifera. In this study, two time series sediment trap moorings deployed in the northern South China Sea (SCS) from July 2012 to April 2013 and southern SCS (upwelling area) from April to October 2014 were used to infer seasonal calcification depth variations for four commonly used planktonic foraminiferal species, Globigerinoides ruber, Trilobatus sacculifer, without a sac-like final chamber, Pulleniatina obliquiloculata and Neogloboquadrina dutertrei by analyzing their test 818O values. The findings demonstrate that planktonic foraminifera deposit their tests shallower in the winter and during cold water upwelling activity, and deeper in the summer, with a changing seasonal depth habitat for all species that tends to follow the isothermals. More importantly, we devised a new approach for quantifying the effect of seasonal calcification depth changes on the 818O signature of planktonic foraminiferal tests. After applying this method to our trap site and nine other published global sediment trap sites, the results show that foraminiferal seasonal 818O signal is strongly distorted (amplified or damped) by seasonal variations in their habitat depth, particularly for the species living in low latitude, attributed to the strong vertical temperature gradient relative to the seasonal temperature change at a given water depth. Surface water species that live in the homogeneous mixed layer may be able to provide the most comprehensive seasonality information. (c) 2022 Elsevier Ltd. All rights reserved.

KeywordSediment trap Planktonic foraminifera Stable oxygen isotope Seasonal variation Depth migration
DOI10.1016/j.gca.2022.04.014
Indexed BySCI
Language英语
WOS KeywordSOUTH CHINA SEA ; VERTICAL-DISTRIBUTION ; SEDIMENT TRAPS ; DELTA-O-18 ; TEMPERATURE ; PACIFIC ; VARIABILITY ; SURFACE ; BASIN ; MG/CA
Funding ProjectStrategic Priority Research Program of Chinese Academy of Sciences[XDB26000000] ; National Natural Science Foundation of China[41906058] ; National Natural Science Foundation of China[41776073] ; National Natural Science Foundation of China[41906045] ; Scientific Research Fund of the Second Institute of Oceanography[JZ2001] ; Scientific Research Fund of the Second Institute of Oceanography[JG2213] ; State Key Laboratory of Marine Geology, Tongji University, China[MGK1917]
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000802301600003
Funding OrganizationStrategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; Scientific Research Fund of the Second Institute of Oceanography ; State Key Laboratory of Marine Geology, Tongji University, China
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/40860
Collection中国科学院南京地质古生物研究所
Corresponding AuthorYu, Zhoufei(俞宙菲)
Affiliation1.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China
2.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, Ctr Excellence Life & Paleoenvironment, Nanjing 210008, Peoples R China
3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266061, Peoples R China
4.Minist Nat Resources, Key Lab Marine Ecosyst Dynam, Hangzhou 310012, Peoples R China
5.Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai 510045, Peoples R China
First Author AffilicationNanjing Institute of Geology and Palaeonotology,CAS
Corresponding Author AffilicationNanjing Institute of Geology and Palaeonotology,CAS
Recommended Citation
GB/T 7714
Yu, Zhoufei,Li, Baohua,Li, Hongliang,et al. The influence of seasonal calcification depth change on the planktonic foraminiferal stable oxygen isotope signal[J]. GEOCHIMICA ET COSMOCHIMICA ACTA,2022,327:34-52.
APA Yu, Zhoufei,Li, Baohua,Li, Hongliang,Zhang, Jingling,&Chen, Jianfang.(2022).The influence of seasonal calcification depth change on the planktonic foraminiferal stable oxygen isotope signal.GEOCHIMICA ET COSMOCHIMICA ACTA,327,34-52.
MLA Yu, Zhoufei,et al."The influence of seasonal calcification depth change on the planktonic foraminiferal stable oxygen isotope signal".GEOCHIMICA ET COSMOCHIMICA ACTA 327(2022):34-52.
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