Variations in isoprenoid tetraether lipids through the water column of the Western Pacific Ocean: Implications for sedimentary TEX86 records

doi:10.1016/j.gca.2024.01.013

	Variations in isoprenoid tetraether lipids through the water column of the Western Pacific Ocean: Implications for sedimentary TEX86 records
	Guo, Jinqiang 1,2; Wang, Zongyue 1,3,4; Achterberg, Eric P.2; Yuan, Huamao1,3,4,5 ; Song, Jinming1,3,4,5 ; Wang, Yuning 1,3,4; Li, Xuegang 1,3,4,5; Duan, Liqin 1,3,4,5; Qu, Baoxiao1,3,4,5
	2024-03-01
发表期刊	GEOCHIMICA ET COSMOCHIMICA ACTA
ISSN	0016-7037
卷号	368 页码:24-33
通讯作者	Yuan, Huamao([email protected])
摘要	The TetraEther indeX of 86 carbon atoms (TEX86) is widely used as a proxy to reconstruct past sea surface temperatures. Most current applications of TEX86 are primarily based on analyzing the composition of isoprenoid glycerol dialkyl glycerol tetraethers (isoGDGTs) that comprise TEX86 in sediments, with the assumption that the sedimentary isoGDGTs are mainly derived from the surface mixed layer. Here we report on the variations in the isoGDGT distribution, archaeal abundance and community through the water column of the Western Pacific Ocean, directly testing the export depth of isoGDGTs and constraining the temperature records of TEX86. Our data show that maximum isoGDGT concentrations occurred in subsurface waters (150-200 m) with maximum archaeal abundances. The ratio between isoGDGTs bearing 2 vs. 3 cyclopentane moieties, i.e. [2/3] ratio, increased with depth, which is likely related to the shift of the archaeal community from Ca. Nitrosopelagicusdominance to norank_f__Nitrosopumilaceae-dominance. Models based on the [2/3] ratios in the water column predicted an average export depth of isoGDGTs to sediments of around 150-200 m, consistent with the robust relationship between the compiled sedimentary TEX86 and the annual mean subsurface temperature. Taken together, our findings support that TEX86 records subsurface rather than surface temperatures in the open ocean.
关键词	Isoprenoid GDGTs Archaeal community TEX86 Suspended particulate matter Western Pacific Ocean
DOI	10.1016/j.gca.2024.01.013
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China (NSFC)[91958103]; National Natural Science Foundation of China (NSFC)[42276038]; National Natural Science Foundation of China (NSFC)[42276206]; Shandong Province Natural Science Foundation[ZR2020YQ28]; Taishan Scholars Program[tsqn202211256]; Two-Hundred Talents Plan of Yantai Scholar Project Special Funding; NSFC; [42049909]
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:001173875400001
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS关键词	AMMONIA-OXIDIZING ARCHAEA ; SEA-SURFACE TEMPERATURES ; OXYGEN MINIMUM ZONE ; NITROSOPUMILUS-MARITIMUS ; PARTICULATE MATTER ; GDGT DISTRIBUTIONS ; MEMBRANE-LIPIDS ; BACTERIA ; NITRIFICATION ; PRODUCTIVITY
引用统计
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/184814
专题	海洋生态与环境科学重点实验室
通讯作者	Yuan, Huamao
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China 2.GEOMAR Helmholtz Ctr Ocean Res, Marine Biogeochem Div, D-24148 Kiel, Germany 3.Laoshan Lab, Lab Marine Ecol & Environm Sci Lab, Qingdao 266237, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Chinese Acad Sci, Inst Oceanol, Ctr Ocean Mega Sci, Qingdao 266071, Peoples R China
第一作者单位	中国科学院海洋研究所
通讯作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Guo, Jinqiang,Wang, Zongyue,Achterberg, Eric P.,et al. Variations in isoprenoid tetraether lipids through the water column of the Western Pacific Ocean: Implications for sedimentary TEX86 records[J]. GEOCHIMICA ET COSMOCHIMICA ACTA,2024,368:24-33.
APA	Guo, Jinqiang.,Wang, Zongyue.,Achterberg, Eric P..,Yuan, Huamao.,Song, Jinming.,...&Qu, Baoxiao.(2024).Variations in isoprenoid tetraether lipids through the water column of the Western Pacific Ocean: Implications for sedimentary TEX86 records.GEOCHIMICA ET COSMOCHIMICA ACTA,368,24-33.
MLA	Guo, Jinqiang,et al."Variations in isoprenoid tetraether lipids through the water column of the Western Pacific Ocean: Implications for sedimentary TEX86 records".GEOCHIMICA ET COSMOCHIMICA ACTA 368(2024):24-33.