气候变化领域集成服务门户(CCPortal): A heterocyte glycolipid-based calibration to reconstruct past continental climate change

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DOI	10.1038/s41467-021-22739-3
	A heterocyte glycolipid-based calibration to reconstruct past continental climate change
	Bauersachs T.; Russell J.M.; Evans T.W.; Schwalb A.; Schwark L.
发表日期	2021
ISSN	2041-1723
卷号	12 期号:1
英文摘要	Understanding Earth’s response to climate forcing in the geological past is essential to reliably predict future climate change. The reconstruction of continental climates, however, is hampered by the scarcity of universally applicable temperature proxies. Here, we show that heterocyte glycolipids (HGs) of diazotrophic heterocytous cyanobacteria occur ubiquitously in equatorial East African lakes as well as polar to tropical freshwater environments. The relative abundance of HG26 diols and keto-ols, quantified by the heterocyte diol index (HDI26), is significantly correlated with surface water temperature (SWT). The first application of the HDI26 to a ~37,000 year-long sediment record from Lake Tanganyika provides evidence for a ~4.1 °C warming in tropical East Africa from the last glacial to the beginning of the industrial period. Given the worldwide distribution of HGs in lake sediments, the HDI26 may allow reconstructing SWT variations in polar to tropical freshwater environments and thereby quantifying past continental climate change. © 2021, The Author(s).
语种	英语
scopus关键词	glycolipid; lake water; surface water; fresh water; glycolipid; climate change; climate forcing; freshwater environment; index method; Last Glacial; lipid; paleoclimate; reconstruction; surface water; Africa; Article; calibration; climate change; cyanobacterium; diazotroph; freshwater environment; isomer; lake sediment; nonhuman; tropic climate; warming; water temperature; calibration; cyanobacterium; cytology; geography; lake; metabolism; microbiology; sediment; Tanzania; temperature; East Africa; East African Lakes; Lake Tanganyika; Cyanobacteria; Calibration; Climate Change; Cyanobacteria; Fresh Water; Geography; Geologic Sediments; Glycolipids; Lakes; Tanzania; Temperature
来源期刊	Nature Communications
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/250706
作者单位	Christian-Albrechts-University, Kiel, Germany; Brown University, Providence, RI, United States; Massachusetts Institute of Technology, Cambridge, MA, United States; Technische Universität Braunschweig, Braunschweig, Germany; Curtin University, Bentley, WA, Australia
推荐引用方式 GB/T 7714	Bauersachs T.,Russell J.M.,Evans T.W.,et al. A heterocyte glycolipid-based calibration to reconstruct past continental climate change[J],2021,12(1).
APA	Bauersachs T.,Russell J.M.,Evans T.W.,Schwalb A.,&Schwark L..(2021).A heterocyte glycolipid-based calibration to reconstruct past continental climate change.Nature Communications,12(1).
MLA	Bauersachs T.,et al."A heterocyte glycolipid-based calibration to reconstruct past continental climate change".Nature Communications 12.1(2021).