Results 51 to 60 of about 3,987 (248)

OPTiMAL: a new machine learning approach for GDGT-based palaeothermometry [PDF]

Climate of the Past, 2020
In the modern oceans, the relative abundances of glycerol dialkyl glycerol tetraether (GDGT) compounds produced by marine archaeal communities show a significant dependence on the local sea surface temperature at the site of deposition. When preserved in
T. Dunkley Jones, Y. L. Eley, W. Thomson, S. E. Greene, I. Mandel, I. Mandel, I. Mandel, K. Edgar, J. A. Bendle   +8 more
doaj   +1 more source

The effect of meter-scale lateral oxygen gradients at the sediment-water interface on selected organic matter based alteration, productivity and temperature proxies [PDF]

Biogeosciences, 2012
A valid assessment of selective aerobic degradation on organic matter (OM) and its impact on OM-based proxies is vital to produce accurate environmental reconstructions. However, most studies investigating these effects suffer from inherent environmental
K. A. Bogus, K. A. F. Zonneveld, D. Fischer, S. Kasten, G. Bohrmann, G. J. M. Versteegh   +5 more
doaj   +1 more source

Major changes in glacial and Holocene terrestrial temperatures and sources of organic carbon recorded in the Amazon fan by tetraether lipids [PDF]

, 2010
The Amazon basin is a major component of the global carbon and hydrological cycles, a significant natural source of methane, and home to remarkable biodiversity and endemism.
Bendle, JA, Boot, C, Damsté, Jaap S Sinninghe, Ettwein, VJ, Hopmans, EC, Maslin, M, Pancost, RD, Schouten, S, Weijers, JW   +8 more
core   +1 more source

Variation of Isoprenoid GDGTs in the Stratified Marine Water Column: Implications for GDGT-Based TEX86 Paleothermometry

Frontiers in Marine Science, 2021
Isoprenoid glycerol dialkyl glycerol tetraethers (isoGDGTs) derived from archaea are lipid biomarkers that exhibit high sensitivity to changes in water temperature, leading to the widespread application of the isoGDGT-based tetraether index of 86 carbon ...
Jinqiang Guo, Jinqiang Guo, Jinqiang Guo, Jinqiang Guo, Huamao Yuan, Huamao Yuan, Huamao Yuan, Huamao Yuan, Jinming Song, Jinming Song, Jinming Song, Jinming Song, Baoxiao Qu, Baoxiao Qu, Baoxiao Qu, Baoxiao Qu, Jianwei Xing, Jianwei Xing, Jianwei Xing, Jianwei Xing, Qidong Wang, Qidong Wang, Qidong Wang, Qidong Wang, Xuegang Li, Xuegang Li, Xuegang Li, Xuegang Li, Liqin Duan, Liqin Duan, Liqin Duan, Liqin Duan, Ning Li, Ning Li, Ning Li, Ning Li, Yingxia Wang, Yingxia Wang, Yingxia Wang   +38 more
doaj   +1 more source

Membrane-spanning lipids for an uncompromised monitoring of membrane fusion and intermembrane lipid transfer

Journal of Lipid Research, 2015
A Förster resonance energy transfer-based fusion and transfer assay was developed to study, in model membranes, protein-mediated membrane fusion and intermembrane lipid transfer of fluorescent sphingolipid analogs.
Günter Schwarzmann, Bernadette Breiden, Konrad Sandhoff   +2 more
doaj   +1 more source

Carbon Oxidation State in Microbial Polar Lipids Suggests Adaptation to Hot Spring Temperature and Redox Gradients

Frontiers in Microbiology, 2020
The influence of oxidation-reduction (redox) potential on the expression of biomolecules is a topic of ongoing exploration in geobiology. In this study, we investigate the novel possibility that structures and compositions of lipids produced by microbial
Grayson M. Boyer, Florence Schubotz, Roger E. Summons, Jade Woods, Everett L. Shock, Everett L. Shock   +5 more
doaj   +1 more source

Ether- and Ester-Bound iso-Diabolic Acid and Other Lipids in Members of Acidobacteria Subdivision 4 [PDF]

, 2014
Recently, iso-diabolic acid (13,16-dimethyl octacosanedioic acid) has been identified as a major membrane-spanning lipid of subdivisions 1 and 3 of the Acidobacteria, a highly diverse phylum within the Bacteria.
Bryant, D.A., Dunfield, P.F., Foesel, B.U., Hopmans, E.C., Houghton, K., Overmann, J., Rijpstra, W.I.C., Sinninghe Damsté, J.S., Stott, M., Tank, M., Wüst, P.K.   +10 more
core   +2 more sources

A TEX86 surface sediment database and extended Bayesian calibration [PDF]

, 2015
© The Author(s), 2015. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Scientific Data 2 (2015): 150029, doi:10.1038/sdata.2015.29.Quantitative estimates of past temperature
Tierney, Jessica E., Tingley, Martin P.
core   +1 more source

The distribution and abundance of archaeal tetraether lipids in U.S. Great Basin hot springs [PDF]

, 2013
Isoprenoidal glycerol dialkyl glycerol tetraethers (iGDGTs) are core membrane lipids of many archaea that enhance the integrity of cytoplasmic membranes in extreme environments.
Amanda J. eWilliams, Brian P. Hedlund, Bruce A Hungate, Chuanlun eZhang, Chuanlun eZhang, Hailiang eDong, Julienne J. eParaiso, Julienne J. eParaiso, Paul eDijkstra, Qiuyuan eHuang, Yuli eWei   +10 more
core   +2 more sources

Crenarchaeol

Journal of Lipid Research, 2002
The basic structure and stereochemistry of the characteristic glycerol dibiphytanyl glycerol tetraether (GDGT) membrane lipid of cosmopolitan pelagic crenarchaeota has been identified by high field two-dimensional (2D)-NMR techniques.
Jaap S.Sinninghe Damsté, Stefan Schouten, Ellen C. Hopmans, Adri C.T. van Duin, Jan A.J. Geenevasen   +4 more
doaj   +1 more source