Group I alkenones and Isochrysidales in the world's largest maar lakes and their potential paleoclimate applications

doi:10.1016/j.orggeochem.2019.103924

IEECAS OpenIR > 黄土与第四纪地质国家重点实验室（2010~）

	Group I alkenones and Isochrysidales in the world's largest maar lakes and their potential paleoclimate applications
	Wang, Karen J.1; O'Donnell, Jonathan A.2; Longo, William M.3; Amaral-Zettler, Linda 1,4,5,6; Li, Gaoyuan 7; Yao, Yuan 1,8; Huang, Yongsong 1,8
通讯作者	Wang, Karen J.(karen_wang@brown.edu) ; Huang, Yongsong(yongsong_huang@brown.edu)
	2019-12-01
发表期刊	ORGANIC GEOCHEMISTRY
ISSN	0146-6380
卷号	138 页码:9
摘要	The Espenberg maar lakes on the Seward Peninsula, Alaska, are the largest volcanic crater lakes in the world and contain the longest known lacustrine sedimentary archives in Alaska. The lack of glacialaged marine sedimentary archives around the Bering Land Bridge due to exposure of the shelf during sea level low-stands makes these lakes highly valuable for understanding the region's past climate and environmental changes. Located en route to humanity's last colonized American continents, the Seward Peninsula's climate and environments during the last glacial period bear major anthropological significance. However, a lack of quantitative proxies has so far hampered exploration of these lakes for paleoclimate reconstructions. Here we report, for the first time, the discovery of abundant Group I alkenones and Isochrysidales in surface sediments from three maar lakes: White Fish, North Killeak and Devil Mountain, using a combination of lipid biomarker and 18S rRNA gene sequencing analyses. Our discovery adds to the expanding list of oligotrophic freshwater lakes where Group I alkenones are found, and water chemistry data contribute to the understanding of the environmental controls on Group I Isochrysidales. Our results further confirm the use of the U-37(K) index of Group I alkenones as a proxy for the mean temperature of the spring isotherm (MTSI) and RIK37 as a quantitative measurement for Isochrysidales group mixing. We also demonstrate the analytical challenges for analyzing alkenones in freshwater lakes and the effectiveness of eliminating coelution using silver thiolate chromatographic material (AgTCM). (C) 2019 Elsevier Ltd. All rights reserved.
关键词	Alkenones Isochrysidales Espenberg maar lakes Seward Peninsula Alaska AgTCM 18S rRNA Paleotemperature
DOI	10.1016/j.orggeochem.2019.103924
关键词[WOS]	LONG-CHAIN-ALKENONES ; PERMAFROST CARBON ; CLIMATE-CHANGE ; TEMPERATURE ; SEDIMENTS ; DISTRIBUTIONS ; SENSITIVITY ; HAPTOPHYTE ; SEPARATION ; RESOLUTION
收录类别	SCI ; SCI
语种	英语
资助项目	United States National Science Foundation[EAR-1122749] ; United States National Science Foundation[PLR-1503846] ; United States National Science Foundation[EAR-1502455] ; United States National Science Foundation[EAR-1762431] ; NPS Shared Beringia Heritage program ; NPS Arctic Inventory and Monitoring Network ; NPS Bering Land Bridge National Preserve
WOS研究方向	Geochemistry & Geophysics
项目资助者	United States National Science Foundation ; NPS Shared Beringia Heritage program ; NPS Arctic Inventory and Monitoring Network ; NPS Bering Land Bridge National Preserve
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000500549500008
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/13037
专题	黄土与第四纪地质国家重点实验室（2010~）加速器质谱中心
通讯作者	Wang, Karen J.; Huang, Yongsong
作者单位	1.Brown Univ, Dept Earth Environm & Planetary Sci, Providence, RI 02912 USA 2.Natl Pk Serv, Arctic Network, Anchorage, AK USA 3.Woods Hole Oceanog Inst, Dept Marine Chem & Geochem, Woods Hole, MA 02543 USA 4.NIOZ Royal Netherlands Inst Sea Res, Dept Marine Microbiol & Biogeochem, Utrecht, Netherlands 5.Univ Utrecht, Utrecht, Netherlands 6.Univ Amsterdam, Inst Biodivers & Ecosyst Dynam, Dept Freshwater & Marine Ecol, Amsterdam, Netherlands 7.China Univ Geosci, State Key Lab Biogeol & Environm Geol, Beijing 100083, Peoples R China 8.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Wang, Karen J.,O'Donnell, Jonathan A.,Longo, William M.,et al. Group I alkenones and Isochrysidales in the world's largest maar lakes and their potential paleoclimate applications[J]. ORGANIC GEOCHEMISTRY,2019,138:9.
APA	Wang, Karen J..,O'Donnell, Jonathan A..,Longo, William M..,Amaral-Zettler, Linda.,Li, Gaoyuan.,...&Huang, Yongsong.(2019).Group I alkenones and Isochrysidales in the world's largest maar lakes and their potential paleoclimate applications.ORGANIC GEOCHEMISTRY,138,9.
MLA	Wang, Karen J.,et al."Group I alkenones and Isochrysidales in the world's largest maar lakes and their potential paleoclimate applications".ORGANIC GEOCHEMISTRY 138(2019):9.