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Hydroxylated isoprenoid GDGTs in Chinese coastal seas and their potential as a paleotemperature proxy for mid-to-low latitude marginal seas
Lu, Xiaoxia1,2,3; Liu, Xiao-Lei1; Elling, Felix J.1; Yang, Huan2; Xie, Shucheng2; Song, Jinming4; Li, Xuegang4; Yuan, Huamao4; Li, Ning4; Hinrichs, Kai-Uwe1
2015-12-01
Source PublicationORGANIC GEOCHEMISTRY
Volume89-90Issue:2015Pages:31-43
SubtypeArticle
AbstractHydroxylated isoprenoid glycerol dialkyl glycerol tetraethers (OH-GDGTs), with one or two hydroxyl groups in one of the biphytanyl moieties, are major compounds in planktonic Thaumarchaeota, and occur widely in marine and lacustrine sediments. In order to examine their potential as an indicator of local variation in sea surface temperature (SST), we collected 70 surface sediments from the Chinese coastal seas (CCSs), including 16 from the Yangtze Estuary, to determine their tetraether lipid composition. The proportion of OH-GDGTs relative to total isoprenoid GDGTs increased with latitude from 1.8% to 12.8% and correlated strongly with SST, as indicated from redundancy analysis. The variation in OH-GDGT composition was best captured by the weighted average number of cyclopentane moieties in OH-GDGT-1 and -2 (RI-OH), which correlated significantly with both summer and autumn SST and was associated with minimum residual SST relative to remote sensing data. The large input of terrigenous organic matter to the Yangtze Estuary appears to have no significant influence on the OH-GDGT based proxy. Our study suggests that RI-OH could serve as a useful proxy for recording warm seasonal SST in the CCSs. A global surface sediment compilation further indicates that RI-OH and its derivative, RI-OH', which additionally contains OH-GDGT-0, may be used to estimate SST in warm (ca. > 15 degrees C annual mean SST) and cold (ca. < 15 degrees C) environments, respectively. (C) 2015 Elsevier Ltd. All rights reserved.
KeywordHydroxylated Isoprenoidal Gdgts Past Sea Surface Temperature Chinese Coastal Seas
DOI10.1016/j.orggeochem.2015.10.004
Indexed BySCI
Language英语
WOS IDWOS:000365402600004
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/82317
Collection海洋生态与环境科学重点实验室
Affiliation1.MARUM Ctr Marine Environm Sci, Organ Geochem Grp, D-28334 Bremen, Germany
2.China Univ Geosci, State Key Lab Biogeol & Environm Geol, Wuhan 430074, Peoples R China
3.China Univ Geosci, Fac Earth Resource, Wuhan 430074, Peoples R China
4.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
Recommended Citation
GB/T 7714
Lu, Xiaoxia,Liu, Xiao-Lei,Elling, Felix J.,et al. Hydroxylated isoprenoid GDGTs in Chinese coastal seas and their potential as a paleotemperature proxy for mid-to-low latitude marginal seas[J]. ORGANIC GEOCHEMISTRY,2015,89-90(2015):31-43.
APA Lu, Xiaoxia.,Liu, Xiao-Lei.,Elling, Felix J..,Yang, Huan.,Xie, Shucheng.,...&Hinrichs, Kai-Uwe.(2015).Hydroxylated isoprenoid GDGTs in Chinese coastal seas and their potential as a paleotemperature proxy for mid-to-low latitude marginal seas.ORGANIC GEOCHEMISTRY,89-90(2015),31-43.
MLA Lu, Xiaoxia,et al."Hydroxylated isoprenoid GDGTs in Chinese coastal seas and their potential as a paleotemperature proxy for mid-to-low latitude marginal seas".ORGANIC GEOCHEMISTRY 89-90.2015(2015):31-43.
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