NIGPAS OpenIR  > 中国科学院南京地质古生物研究所
Carbon and hydrogen isotope fractionation under continuous light: implications for paleoenvironmental interpretations of the High Arctic during Paleogene warming
Yang, Hong1; Pagani, Mark2; Briggs, Derek E. G.2; Equiza, M. A.3; Jagels, Richard3; Leng, Qin (冷琴)4; LePage, Ben A.5,6
2009-06-01
Source PublicationOECOLOGIA
ISSN0029-8549
Volume160Issue:3Pages:461-470
Abstract

The effect of low intensity continuous light, e.g., in the High Arctic summer, on plant carbon and hydrogen isotope fractionations is unknown. We conducted greenhouse experiments to test the impact of light quantity and duration on both carbon and hydrogen isotope compositions of three deciduous conifers whose fossil counterparts were components of Paleogene Arctic floras: Metasequoia glyptostroboides, Taxodium distichum, and Larix laricina. We found that plant leaf bulk carbon isotopic values of the examined species were 1.75-4.63aEuro degrees more negative under continuous light (CL) than under diurnal light (DL). Hydrogen isotope values of leaf n-alkanes under continuous light conditions revealed a D-enriched hydrogen isotope composition of up to 40aEuro degrees higher than in diurnal light conditions. The isotope offsets between the two light regimes is explained by a higher ratio of intercellular to atmospheric CO(2) concentration (C (i)/C (a)) and more water loss for plants under continuous light conditions during a 24-h transpiration cycle. Apparent hydrogen isotope fractionations between source water and individual lipids (epsilon(lipid-water)) range from -62aEuro degrees (Metasequoia C(27) and C(29)) to -87aEuro degrees (Larix C(29)) in leaves under continuous light. We applied these hydrogen fractionation factors to hydrogen isotope compositions of in situ n-alkanes from well-preserved Paleogene deciduous conifer fossils from the Arctic region to estimate the delta D value in ancient precipitation. Precipitation in the summer growing season yielded a delta D of -186aEuro degrees for late Paleocene, -157aEuro degrees for early middle Eocene, and -182aEuro degrees for late middle Eocene. We propose that high-latitude summer precipitation in this region was supplemented by moisture derived from regionally recycled transpiration of the polar forests that grew during the Paleogene warming.

KeywordArctic Stable Isotope Paleogene Paleoclimate Deciduous Conifers
DOI10.1007/s00442-009-1321-1
Language英语
WOS KeywordPalaeocene/eocene Thermal Maximum ; Buchanan Lake Formation ; Axel-heiberg Island ; N-alkanes ; Metasequoia-glyptostroboides ; Middle Eocene ; Meteoric Precipitation ; Terrestrial Plants ; Taxodium-distichum ; Aquatic Plants
Funding ProjectCAS/SAFEA International Partnership Program for Creative Research Teams ; Pilot Project of Knowledge Innovation, CAS[KZCX2YW-105] ; Major Basic Research Projects[2006CB806400] ; National Science Foundation of China[40402002] ; National Science Foundation of China[40872011] ; American Chemical Society Petroleum Research Funds ; Bryant University Summer Research Fund
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEcology
WOS IDWOS:000266010800006
Funding OrganizationCAS/SAFEA International Partnership Program for Creative Research Teams ; Pilot Project of Knowledge Innovation, CAS ; Major Basic Research Projects ; National Science Foundation of China ; American Chemical Society Petroleum Research Funds ; Bryant University Summer Research Fund
PublisherSPRINGER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.nigpas.ac.cn/handle/332004/259
Collection中国科学院南京地质古生物研究所
Corresponding AuthorYang, Hong
Affiliation1.Bryant Univ, Dept Sci & Technol, Coll Arts & Sci, Smithfield, RI 02917 USA
2.Yale Univ, Dept Geol & Geophys, New Haven, CT 06520 USA
3.Univ Maine, Sch Forest Resources, Orono, ME 04469 USA
4.CAS, LPS, Nanjing Inst Geol & Palaeontol, Nanjing 210008, Peoples R China
5.Acad Nat Sci, Philadelphia, PA 19103 USA
6.PECO Energy Co, Philadelphia, PA 19103 USA
Recommended Citation
GB/T 7714
Yang, Hong,Pagani, Mark,Briggs, Derek E. G.,et al. Carbon and hydrogen isotope fractionation under continuous light: implications for paleoenvironmental interpretations of the High Arctic during Paleogene warming[J]. OECOLOGIA,2009,160(3):461-470.
APA Yang, Hong.,Pagani, Mark.,Briggs, Derek E. G..,Equiza, M. A..,Jagels, Richard.,...&LePage, Ben A..(2009).Carbon and hydrogen isotope fractionation under continuous light: implications for paleoenvironmental interpretations of the High Arctic during Paleogene warming.OECOLOGIA,160(3),461-470.
MLA Yang, Hong,et al."Carbon and hydrogen isotope fractionation under continuous light: implications for paleoenvironmental interpretations of the High Arctic during Paleogene warming".OECOLOGIA 160.3(2009):461-470.
Files in This Item:
File Name/Size DocType Version Access License
67.pdf(317KB)期刊论文出版稿开放获取CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Yang, Hong]'s Articles
[Pagani, Mark]'s Articles
[Briggs, Derek E. G.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Yang, Hong]'s Articles
[Pagani, Mark]'s Articles
[Briggs, Derek E. G.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Yang, Hong]'s Articles
[Pagani, Mark]'s Articles
[Briggs, Derek E. G.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.