Results 61 to 70 of about 230,746 (160)

AllIGATR: A Multi‐Dimensional Approach for Marine Archaeal Lipid‐Based Paleothermometry

Paleoceanography and Paleoclimatology, Volume 41, Issue 10, October 2026.
Abstract Archaeal glycerol dibiphytanyl glycerol tetraether membrane lipids (GDGTs) are ubiquitous in marine sediments. The number of ring structures in six specific GDGTs varies with seawater temperature, leading to their use in paleothermometry. GDGT temperature dependence is typically quantified in TEX86.
Addison Rice, Francien Peterse, Thomas Laepple, Martin Ziegler, Appy Sluijs   +4 more
wiley   +1 more source

Total Synthesis of Archaeal 72-Membered Macrocyclic Tetraether Lipids

, 2016
Total synthesis of archaeal 72-membered macrocyclic tetraether lipids 3a and 3b is reported. The synthesis was principally composed of preparation of the functionalized half-sized diether compounds 11 and 15 first followed by appropriate dimerization ...
Katsumi Kakinuma (2684236), Tadashi Eguchi (1388379), Kazuya Ibaragi (3043185)   +2 more
core   +2 more sources

Towards quantitative reconstruction of past monsoon precipitation based on tetraether membrane lipids in Chinese loess [PDF]

Climate of the Past
Variations in the oxygen isotope composition (δ18O) of cave speleothems and numerous proxy records from loess–paleosol sequences have revealed past variations in East Asian monsoon (EAM) intensity.
J. Guo, J. Guo, M. Ziegler, L. Fuchs, Y. Sun, F. Peterse   +5 more
doaj   +1 more source

Transition of Glacial Regimes Recorded at IODP Site U1524 in the Ross Sea, Antarctica, Over the Last 800 Thousand Years

Paleoceanography and Paleoclimatology, Volume 41, Issue 10, October 2026.
Abstract Reconstructing past interactions between the West Antarctic Ice Sheet (WAIS) and changing environmental conditions in the Ross Sea region can help determine long‐term WAIS stability. Existing sedimentary records reveal changes to oceanography, sea ice and ice sheet extent over the glacial‐interglacial cycles of the last ∼800 kyr.
J. W. Marschalek, T. van de Flierdt, M. O. Patterson, G. Grant, S. Kim, W. Xiao, Q. Li, G. Cortese, S. Bombard, R. M. Leckie, H. Ishii, T. van Peer, C. Xuan, S. Sugisaki, J. Müller, D. Kaufman, D. K. Kulhanek, K. J. Licht, S. R. Hemming, O. Seki, E. Colizza, F. Torricella, J. Gales, B. W. Romans, N. Varela, L. De Santis, R. M. McKay   +26 more
wiley   +1 more source

Ecological and Hydrological Modulation of Land Surface Temperature in the East Asian Monsoon Margin During Pliocene‐Pleistocene Global Cooling

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract The response of terrestrial climate to future warming remains debated. The Pliocene, with CO2 levels similar to today, is an important analog for the future. The East Asian monsoon marginal region is one of the most climate sensitive regions on Earth. Based on contemporaneous aeolian sediments and aquatic‐influenced alluvial sediments from the
Chen Chen, Hanzhi Zhang, Huayu Lu, Cheng Zhao, Yuqiang Zeng, Jian Yu   +5 more
wiley   +1 more source

Identification of unusual butanetriol dialkyl glycerol tetraether and pentanetriol dialkyl glycerol tetraether lipids in marine sediments

, 2013
RATIONALE: Glycerol serves as the principal backbone moiety bound to various acyl/alkyl chains for membrane lipids of Eukarya, Bacteria, and Archaea.
Wolf Dummann, Zhu, Chun, Travis B. Meador, Dummann, Wolf, Hinrichs, Kai-Uwe, Meador, Travis B., Kai‐Uwe Hinrichs, Chun Zhu   +7 more
core   +1 more source

Freeze-fracture planes of methanogen membranes correlate with the content of tetraether lipids

, 1993
Methanospirillum hungatei GP1 contained 50% of its ether core lipids (polar lipids less head groups) as tetraether lipids, and its plasma membrane failed to fracture along its hydrophobic domain during freeze-etching.
Choquet, C. G., G. B. Patel, T. J. Beveridge, Patel, G. B., Sprott, G. D., Beveridge, T. J., C. G. Choquet, G. D. Sprott   +7 more
core   +1 more source

Tracing tetraether lipids from source to sink in the Rhône River system (NW Mediterranean)

Frontiers in Earth Science, 2015
In this study, we investigated soils and river suspended particulate matter (SPM) collected in the Rhône and its tributary basins as well as marine surface sediments taken in the Rhône prodelta (Gulf of Lions, NW Mediterranean).
Jung-Hyun eKim, Jung-Hyun eKim, Wolfgang eLudwig, Roselyne eBuscail, Denise eDorhout, Denise eDorhout, Jaap S. Sinninghe Damste, Jaap S. Sinninghe Damste   +7 more
doaj   +1 more source

Lack of ¹³C-label incorporation suggests low turnover rates of thaumarchaeal intact polar tetraether lipids in sediments from the Iceland shelf [PDF]

Biogeosciences, 2014
Thaumarchaeota are amongst the most abundant microorganisms in aquatic environments, however, their metabolism in marine sediments is still debated. Labeling studies in marine sediments have previously been undertaken, but focused on complex organic ...
S. K. Lengger, Y. A. Lipsewers, H. de Haas, J. S. Sinninghe Damsté, S. Schouten   +4 more
doaj   +1 more source

Sedimentary lycopane/n‐C31 ratio as a proxy for bottom water hypoxia in coastal ocean

Limnology and Oceanography Letters, Volume 11, Issue 5, September 2026.
Abstract Bottom‐water hypoxia on continental shelves is intensifying under climate change and eutrophication, yet long‐term records remain scarce. Here we show that the sedimentary lycopane/n‐C31 ratio reliably records bottom‐water oxygenation in the seasonally hypoxic Yangtze River Estuary.
Qingnan Song, Huamao Yuan, Jinming Song, Guiling Zhang, Fengmin Pan, Xuegang Li, Liqin Duan   +6 more
wiley   +1 more source