IGGCAS OpenIR  > 油气资源研究院重点实验室
Ordovician cyanobacterial calcification: A marine fossil proxy for atmospheric CO2
Liu, Lijing1; Liang, Liyuan2; Wu, Yasheng3; Zhou, Xiqiang3; Jia, Lianqi1; Riding, Robert4
2020-01-15
Source PublicationEARTH AND PLANETARY SCIENCE LETTERS
ISSN0012-821X
Volume530Pages:10
AbstractOrdovician atmospheric CO2 level was an important influence on climate and life. However, modelled estimates of Ordovician CO2 differ widely and, in contrast to much of the subsequent Phanerozoic, they lack fossil proxy constraints. In vivo cyanobacterial sheath calcification, promoted by carbon dioxide concentrating mechanisms (CCMs), creates distinctive microfossils. These provide a direct ecophysiological link to ambient concentrations of CO2 and, to a lesser extent, O-2. Cyanobacteria do not calcify at high CO2 concentrations. Experiments show that CCMs can be induced in present-day cyanobacteria at CO2 levels below similar to 10 times present atmospheric level (PAL) and that this promotes sheath calcification. We compiled a global database of cyanobacterial calcification in marine environments throughout the Ordovician (485-443 Myr ago) and compared it with modelled estimates of atmospheric CO2 and O-2. These data show that many genera of marine calcified cyanobacteria reappeared from Cambrian Series 2 or first appeared globally during the late middle to late Upper Ordovician (late Darriwilian to late Katian) in carbonate platform facies, resulting in a previously unrecognized ten-fold increase in global diversity. Such a large increase in calcification suggests widespread induction of CCM expression in cyanobacteria, consistent with sustained decline in external CO2 concentrations below similar to 10 x PAL, together with increase in dissolved O-2 level, during the late Darriwilian, Sandbian and Katian stages, similar to 460-445 Myr ago. These cyanobacterial calcification fossil proxy data provide a first order constraint on modelled estimates of atmospheric CO2 for the Ordovician. Estimated CO2 outputs from COPSE and recent GEOCARB-based models are broadly consistent with this cyanobacterial calcification proxy for the Ordovician. In view of the long history of cyanobacteria, the calcified cyanobacterial proxy offers potential to assist interpretation of CO2 deeper into geological time. (C) 2019 Elsevier B.V. All rights reserved.
Keywordcalcification cyanobacteria CO2 modelling Ordovician photosynthesis
DOI10.1016/j.epsl.2019.115950
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; Science Foundation of Shaanxi Province ; Science Foundation of Shaanxi Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Science Foundation of Shaanxi Province ; Science Foundation of Shaanxi Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Science Foundation of Shaanxi Province ; Science Foundation of Shaanxi Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Science Foundation of Shaanxi Province ; Science Foundation of Shaanxi Province
WOS KeywordINORGANIC CARBON POOL ; CONCENTRATING MECHANISMS ; TARIM BASIN ; NORTHWEST CHINA ; DIOXIDE LEVELS ; MODEL ; EVOLUTION ; OXYGEN ; BIODIVERSIFICATION ; GEOCARBSULF
Language英语
Funding ProjectNational Natural Science Foundation of China[41502004] ; National Natural Science Foundation of China[41672025] ; National Natural Science Foundation of China[41720104002] ; National Natural Science Foundation of China[41890844] ; National Natural Science Foundation of China[41972143] ; Science Foundation of Shaanxi Province[S2018-JC-YB-1007]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; Science Foundation of Shaanxi Province ; Science Foundation of Shaanxi Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Science Foundation of Shaanxi Province ; Science Foundation of Shaanxi Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Science Foundation of Shaanxi Province ; Science Foundation of Shaanxi Province ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Science Foundation of Shaanxi Province ; Science Foundation of Shaanxi Province
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000508747300029
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/95930
Collection油气资源研究院重点实验室
Corresponding AuthorLiu, Lijing
Affiliation1.Northwest Univ, Dept Geol, State Key Lab Continental Dynam, Shaanxi Key Lab Early Life & Environm, Xian 710069, Shaanxi, Peoples R China
2.Geoconsultants Corp, Kevil, KY 42053 USA
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resource Res, Beijing 100029, Peoples R China
4.Univ Tennessee, Dept Earth & Planetary Sci, Knoxville, TN 37996 USA
Recommended Citation
GB/T 7714
Liu, Lijing,Liang, Liyuan,Wu, Yasheng,et al. Ordovician cyanobacterial calcification: A marine fossil proxy for atmospheric CO2[J]. EARTH AND PLANETARY SCIENCE LETTERS,2020,530:10.
APA Liu, Lijing,Liang, Liyuan,Wu, Yasheng,Zhou, Xiqiang,Jia, Lianqi,&Riding, Robert.(2020).Ordovician cyanobacterial calcification: A marine fossil proxy for atmospheric CO2.EARTH AND PLANETARY SCIENCE LETTERS,530,10.
MLA Liu, Lijing,et al."Ordovician cyanobacterial calcification: A marine fossil proxy for atmospheric CO2".EARTH AND PLANETARY SCIENCE LETTERS 530(2020):10.
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