Results 11 to 20 of about 1,711 (160)

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

Research Progress in Analytical Methods of Biomarker GDGTs in Geological Environments [PDF]

Yankuang ceshi
Glycerol dialkyl glyceryl tetraethers (GDGTs) are a class of environment biomarkers that are widely found in the environment of oceans, lakes, soils, and peat.
Nan ZHAN, Qing SUN, Qi LI, Manman XIE, Wenyu SHANG, Ruixia HAO   +5 more
doaj   +2 more sources

Abundance and Distribution of GDGTs in Incubated Artificial Soils with No Fossil Pool [PDF]

Yankuang ceshi
Glycerol dialkyl glycerol tetraethers (GDGTs) derived from microorganisms are important tools for the study of paleoclimate changes. Incubation experiments are helpful to clarify the mechanisms for the responses of GDGTs to environmental parameters, and ...
Rui MIAO, Zenghao ZHAO, Zeyuan CAI, Xu LIU, Huanye WANG   +4 more
doaj   +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

Isoprenoidal GDGTs and GDDs associated with anoxic lacustrine environments [PDF]

, 2023
We examined membrane-spanning archaeal lipids using ultra high pressure liquid chromatography-high resolution mass spectrometry (UHPLC-HRMS) in a suite of sediment samples from both cored sequences (Messel oil shale and Lake Chala) and surface sediments (
Richter, N., Hopmans, E.C., Cristina Costa, A., Peterse, F, Schouten, S., Mitrovic, D., Miguel Raposeiro, P., Gonçalves, V., Baxter, A.J., Amaral-Zettler, L., Bale, N.J., Vítor Gonçalves, Stefan Schouten, Nicole J. Bale, Danica Mitrović, Linda A. Amaral-Zettler, Ana Cristina Costa, Pedro Miguel Raposeiro, Nora Richter, Allix J. Baxter, Francien Peterse, Ellen C. Hopmans   +21 more
core   +3 more sources

Thermophilization: Concepts, Methods, and Implications of Changes in Community Composition due to Global Warming. [PDF]

Glob Chang Biol
As many species shift their geographic ranges coldward due to global warming, communities will undergo “thermophilization”—the increasing relative abundance of warm‐adapted (“thermophilic”) species and the concomitant decrease of cold‐adapted species over time.
Feeley KJ, Iseli E, Bektaş B, Manzanedo RD, McMichael CH, Alexander JM, Hille Ris Lambers J.   +6 more
europepmc   +2 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

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

Evaluation of the distributions of hydroxylated glycerol dibiphytanyl glycerol tetraethers (GDGTs) in Holocene Baltic Sea sediments for reconstruction of sea surface temperature: the effect of changing salinity [PDF]

Climate of the Past, 2022
Hydroxylated glycerol dibiphytanyl glycerol tetraethers (OH-GDGTs) produced by both marine and freshwater thaumarchaea are increasingly used for the reconstruction of past sea surface temperature (SST). They occur throughout the modern Baltic Sea, but it
J. S. Sinninghe Damsté, J. S. Sinninghe Damsté, L. A. Warden, C. Berg, C. Berg, K. Jürgens, M. Moros   +6 more
doaj   +1 more source

Distribution and source of glycerol dialkyl glycerol tetraethers (GDGTs) and the applicability of GDGT-based temperature proxies in surface sediments of Prydz Bay, East Antarctica

Polar Research, 2020
Reliable records of Southern Ocean seawater palaeotemperatures are important because this region plays a significant role in regulating global climate change.
Ruijuan Liu, Zhengbing Han, Jun Zhao, Haifeng Zhang, Dong Li, Jianye Ren, Jianming Pan, Haisheng Zhang   +7 more
doaj   +1 more source