Results 11 to 20 of about 92,659 (149)

Bacterial GDGTs in Holocene sediments and catchment soils of a high Alpine lake: application of the MBT/CBT-paleothermometer [PDF]

Climate of the Past, 2012
A novel proxy for continental mean annual air temperature (MAAT) and soil pH, the MBT/CBT-paleothermometer, is based on the temperature (<i>T</i>) and pH-dependent distribution of specific bacterial membrane lipids (branched glycerol dialkyl ...
H. Niemann, A. Stadnitskaia, S. B. Wirth, A. Gilli, F. S. Anselmetti, J. S. Sinninghe Damsté, S. Schouten, E. C. Hopmans, M. F. Lehmann   +8 more
doaj   +4 more sources

Soil and Air Temperature Calibrations Using Branched GDGTs for the Tropical Andes of Colombia: Toward a Pan-Tropical Calibration

Geochemistry, Geophysics, Geosystems, 2020
Branched glycerol dialkyl glycerol tetraethers (brGDGTs) are bacterial cell membrane lipids that, when preserved in sedimentary archives, can be used to infer continental paleotemperatures.
Kathryn Snell, Lina C. Pérez-Angel, Peter Molnár   +2 more
exaly   +2 more sources

Subsurface Production of Marine Derived Bacterial Tetraether Lipids: Implications for Paleoceanographic Reconstruction

Geophysical Research Letters
Branched glycerol dialkyl glycerol tetraethers (brGDGTs) are widely used as paleoclimate proxies on land, yet their origin in marine environments remains incompletely constrained.
Jiaming Zhou, Jing Zhao, Yanwei Wang, Zian Tong, Huanye Wang, Binbin Guo, Longhui Deng, Fengping Wang, Qianyong Liang, Liang Dong   +9 more
doaj   +2 more sources

Molecular Characterization of Glycerol Dialkyl Glycerol Tetraethers by High Resolution Orbitrap Mass Spectrometry [PDF]

Zhipu Xuebao, 2021
Isoprenoidal glycerol dibiphytanyl glycerol tetraethers (iso-GDGTs) and branched glycerol dialkyl glycerol tetraethers (br-GDGTs) have been widely used as biomarkers of archaea and bacteria for the investigation of paleoenvironment. The analysis of GDGTs
LI Yun-yun, HE Chen, WU Jian-xun, ZHANG Ya-he, LIANG Yong-mei, SHI Quan, ZHANG Chuan-lun   +6 more
doaj   +1 more source

Experimental climate warming in a French peatland: impact on the abundance and distribution of branched GDGTs

, 2012
International audienceBranched glycerol dialkyl glycerol tetraethers (GDGTs) arecomplex lipids of high molecular weight, recently discovered insoils and produced by still unknown bacteria. They are increasinglyused as paleoclimate proxies.
Derenne, Sylvie, Fossey, C, Huguet, Arnaud, Laggoun-Défarge, Fatima   +3 more
core   +11 more sources

Biomarker characterization of the North Water Polynya, Baffin Bay: implications for local sea ice and temperature proxies [PDF]

Biogeosciences, 2023
The North Water Polynya (NOW, Inuktitut: Sarvarjuaq; Kalaallisut: Pikialasorsuaq), Baffin Bay, is the largest polynya and one of the most productive regions in the Arctic.
D. J. Harning, B. Holman, L. Woelders, A. E. Jennings, J. Sepúlveda, J. Sepúlveda   +5 more
doaj   +1 more source

Application of microbial membrane tetraether lipids in speleothems

Frontiers in Ecology and Evolution, 2023
Glycerol dialkyl glycerol tetraethers (GDGTs), which are derived from microbial membranes, occur widely in soils, peats, lake sediments, marine sediments, hot springs, and other environments.
Jingjie Zang, Huan Yang, Huan Yang, Jiahao Zhang, Huiru Tang, Huiru Tang, Liangcheng Tan, Liangcheng Tan   +7 more
doaj   +1 more source

Paleoclimate Records of the Middle Okinawa Trough Since the Middle Holocene: Modulation of the Low-Latitude Climate

Frontiers in Earth Science, 2022
The ubiquity of glycerol dibiphytanyl glycerol tetraethers (GDGTs) and their temperature sensitivity make them one of the most effective tools for paleoclimate reconstruction. High- and low-latitude climates influence the Okinawa Trough (OT). It receives
Lei Liu, Lei Liu, Lei Liu, Lei Liu, Hongxiang Guan, Hongxiang Guan, Hongxiang Guan, Lanfang Xu, Lanfang Xu, Zhilei Sun, Zhilei Sun, Nengyou Wu, Nengyou Wu, Nengyou Wu   +13 more
doaj   +1 more source

Millennial-age glycerol dialkyl glycerol tetraethers (GDGTs) in forested mineral soils: ¹⁴C-based evidence for stabilization of microbial necromass [PDF]

Biogeosciences, 2021
Understanding controls on the persistence of soil organic matter (SOM) is essential to constrain its role in the carbon cycle and inform climate–carbon cycle model predictions.
H. Gies, F. Hagedorn, M. Lupker, D. Montluçon, N. Haghipour, N. Haghipour, T. S. van der Voort, T. I. Eglinton   +7 more
doaj   +1 more source

The Sources of Organic Carbon in the Deepest Ocean: Implication From Bacterial Membrane Lipids in the Mariana Trench Zone

Frontiers in Earth Science, 2021
Hadal trenches have higher microbial carbon turnover rates as compared to adjacent abyssal plains. However, the source of organic carbon in the trench remains enigmatic. In this study, we show that a fraction of organic carbon is possibly derived in situ
Jiwei Li, Jiwei Li, Zhiyan Chen, Zhiyan Chen, Zhiyan Chen, Xinxin Li, Xinxin Li, Shun Chen, Hengchao Xu, Kaiwen Ta, Shamik Dasgupta, Shijie Bai, Mengran Du, Shuangquan Liu, Xiaotong Peng   +14 more
doaj   +1 more source