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An inter-comparison study of three stomatal-proxy methods for CO2 reconstruction applied to early Jurassic Ginkgoales plants
Zhou, Ning1,2,3; Wang, Yongdong2,3; Ya, Li2,3; Porter, Amanda S.4; Kurschner, Wolfram M.5; Li, Liqin2,3; Lu, Ning2,3; McElwain, Jennifer C.4
2020-03-15
Source PublicationPALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN0031-0182
Volume542Pages:12
Abstract

The inverse relationship between concentrations of CO2 in the atmosphere (pCO(2)) and the stomatal index of vascular plant has been widely used to estimate ancient levels of atmospheric CO2. However, some atmospheric concentration of CO2 in the geological past (paleo-CO2) estimates show little congruence because they are derived using different correlative methods, or from different fossil plant species with different calibration approaches. Here we apply three methods, including (1) the empirical method of McElwain (1998), (2) the empirical method of Barclay and Wing (2016) and (3) the mechanistic method of Franks et al., (2014) to a single fossil Ginkgo species (Ginkgoites marginatus) to track and assess their consistency of pCO(2) estimates for the Early Jurassic. By using an inter-comparison of three methods, a high degree of consistency in pCO(2) estimates and trends has been observed in two empirical proxy methods. In addition, the mechanistic method and both the empirical methods also show generally good consistent paleo-CO2 estimates at the bed-level. To test the congruence of paleo-CO2 estimates, we also apply all three methods to one additional Ginkgoalean fossil species (Sphenobaiera huangii). All three methods show species-dependent uncertainty in paleo-CO2 estimates when applied to different Ginkgalean fossil species collected from the same fossiliferous bed. Moreover, considering the potential effect of guard cell size to the mechanistic method, the genome size of fossil and living Ginkgo taxa was analyzed based on the significant positive relationship between genome size and guard cell size. The result demonstrates that a likely occurrence of polyploidy in Sphenobaiera huangii may result in underestimated paleo-CO2 when applying mechanistic method due to an increase in the size of the stomatal complex.

KeywordStomatal density Guard cell size Carbon isotope Polyploidy Whole genome duplication
DOI10.1016/j.palaeo.2019.109547
Indexed BySCI
Language英语
WOS KeywordATMOSPHERIC CARBON-DIOXIDE ; FOSSIL PLANTS ; GENOME SIZE ; ISOTOPIC COMPOSITION ; SEAWATER COMPOSITION ; CENOZOIC EVOLUTION ; MODERATE LEVELS ; REVISED MODEL ; DENSITY ; CLIMATE
Funding ProjectStrategic Priority Research Program (B) of the Chinese Academy of Sciences[XDB18000000] ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences[XDB26000000] ; National Natural Science Foundation of China[41790454] ; National Natural Science Foundation of China[41688103] ; National Natural Science Foundation of China[41572014] ; National Natural Science Foundation of China[41621003] ; National Natural Science Foundation of China[41890840] ; State Key Programme of Basic Research of Ministry of Science and Technology, China[2012CB822003] ; State Key Lab funding (SKLPS)[20191103] ; University of Chinese Academy of Sciences[UCAS [2015] 37] ; University of Dublin ; IGCP project[632]
WOS Research AreaPhysical Geography ; Geology ; Paleontology
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS IDWOS:000517852600002
Funding OrganizationStrategic Priority Research Program (B) of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; State Key Programme of Basic Research of Ministry of Science and Technology, China ; State Key Lab funding (SKLPS) ; University of Chinese Academy of Sciences ; University of Dublin ; IGCP project
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/31580
Collection中国科学院南京地质古生物研究所
Corresponding AuthorWang, Yongdong; McElwain, Jennifer C.
Affiliation1.Northwest Univ, Dept Geol, Xian 710069, Shaanxi, Peoples R China
2.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Jiangsu, Peoples R China
3.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Nanjing 210008, Jiangsu, Peoples R China
4.Univ Dublin, Trinity Coll Dublin, Sch Nat Sci, Dept Bot, Dublin 2, Ireland
5.Univ Oslo, Dept Geosci, N-0316 Oslo, Norway
First Author AffilicationNanjing Institute of Geology and Palaeonotology,CAS
Corresponding Author AffilicationNanjing Institute of Geology and Palaeonotology,CAS
Recommended Citation
GB/T 7714
Zhou, Ning,Wang, Yongdong,Ya, Li,et al. An inter-comparison study of three stomatal-proxy methods for CO2 reconstruction applied to early Jurassic Ginkgoales plants[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2020,542:12.
APA Zhou, Ning.,Wang, Yongdong.,Ya, Li.,Porter, Amanda S..,Kurschner, Wolfram M..,...&McElwain, Jennifer C..(2020).An inter-comparison study of three stomatal-proxy methods for CO2 reconstruction applied to early Jurassic Ginkgoales plants.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,542,12.
MLA Zhou, Ning,et al."An inter-comparison study of three stomatal-proxy methods for CO2 reconstruction applied to early Jurassic Ginkgoales plants".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 542(2020):12.
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