Results 71 to 80 of about 1,604 (171)

The Role of Tetraether Lipid Composition in the Adaptation of Thermophilic Archaea to Acidity

Frontiers in Microbiology, 2013
Diether and tetraether lipids are fundamental components of the archaeal cell membrane. Archaea adjust the degree of tetraether lipid cyclization in order to maintain functional membranes and cellular homeostasis when confronted with pH and/or thermal ...
Eric eBoyd, Trinity eHamilton, Jinxiang eWang, Liu eHe, Chuanlun eZhang   +4 more
doaj   +1 more source

Clumped Isotope Temperature Reconstruction Using Stalagmite Drip Cups

Rapid Communications in Mass Spectrometry, Volume 40, Issue 8, 30 April 2026.
ABSTRACT Rationale Application of clumped isotope palaeothermometry to speleothems (carbonate cave deposits, e.g., stalagmites and flowstones) has been restricted largely to subaqueous samples because of kinetic fractionation processes that occur during subaerial speleothem formation, which lead to erroneously high inferred temperatures.
Stuart Umbo, Maria Box, Aviva Intveld, Jack Longman, Sevasti Modestou, Stacy A. Carolin, Daniel H. James, Alfredo Martínez‐García, Carlos Peraza Lope, Mark Brenner, David Hodell, Sebastian F. M. Breitenbach   +11 more
wiley   +1 more source

GDGT

GDGT of sediment in the South China Sea and Indian ...
zhang, cc
core   +1 more source

Fractional abundances and concentrations of GDGT collected by sediment trap FEVI16

, 2019
Fractional abundances and concentrations of GDGT collected by sediment trap ...
Mollenhauer, Gesine, Hefter, Jens, Gesine Mollenhauer (6965003), Ramondenc, Simon, Eunmi Park (6975719), Jens Hefter (6963734), Park, Eunmi, Simon Ramondenc (6975722), Iversen, Morten Hvitfeldt, Fischer, Gerhard, Gerhard Fischer (6959246), Morten Hvitfeldt Iversen (6957920), Eva-Maria Nöthig (6957926), Nöthig, Eva-Maria   +13 more
core   +1 more source

Seasonality of archaeal lipid flux and GDGT-based thermometry in sinking particles of high-latitude oceans: Fram Strait (79° N) and Antarctic Polar Front (50° S) [PDF]

Biogeosciences, 2019
The relative abundance of individual archaeal membrane lipids, namely of glycerol dialkyl glycerol tetraethers (GDGTs) with different numbers of cyclopentane rings, varies with temperature, which enables their use as a paleotemperature proxy index.
E. Park, E. Park, E. Park, J. Hefter, G. Fischer, G. Fischer, M. H. Iversen, M. H. Iversen, S. Ramondenc, S. Ramondenc, E.-M. Nöthig, G. Mollenhauer, G. Mollenhauer, G. Mollenhauer   +13 more
doaj   +1 more source

GDGT composition of the Irene sediment core, González Fjord, Baker-Martínez fjord system, Chile

This dataset reports the composition of glycerol dialkyl glycerol tetraethers (GDGT) extracted from the Irene sediment core collected from González Fjord, Baker-Martínez fjord system (48°S, Chile). The GDGT fraction was analyzed following Kaiser and Arz (
Maldonado-Ugarte, Javier, Kaiser, Jérôme, Bertrand, Sébastien, Lange, Carina Beatriz, Rebolledo, Lorena, Acuña, Víctor   +5 more
core   +1 more source

Corrigendum to “Development of a regional glycerol dialkyl glycerol tetraether (GDGT) temperature calibration for Antarctic and sub-Antarctic lakes” [Earth Planet. Sci. Lett. 433 (2016) 370–379]

, 2020
\ua9 2020The authors regret an error in their article. In Figure 6 the incorrect compound plot was submitted in error when a higher resolution version was requested following review. The figure below is the correct compound plot for GDGT-IIIb.
Hodgson DA, Juggins S, Foster LC, Saunders KM, Roberts SJ, Pearson EJ, Verleyen E   +6 more
core   +2 more sources

Early to Mid‐Holocene Cool Temperature‐Induced Drought in Asian Interior

Geophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract Hydroclimatic variations in mid‐latitude Asia during the early to mid‐Holocene and associated mechanisms remain disputed, hampering our understanding of atmospheric circulation controls on regional climatic changes. We report Holocene alkenone records from two Siberian lakes, documenting lake temperature and hydrological changes, and ...
Jiawei Jiang, Huanye Wang, Hu Liu, Guoqiang Chu, Weiguo Liu, Sergey Krivonogov, Zhonghui Liu   +6 more
wiley   +1 more source

Isoprenoidal GDGT and alkenone-based proxies of sediment core GeoB7702-3

, 2010
Isoprenoidal GDGT and alkenone-based proxies of sediment core GeoB7702-
Castañeda, Isla S, Jürgen Pätzold (6962099), Schouten, Stefan, Schefuß, Enno, Pätzold, Jürgen, Weldeab, Syee, Jaap S Sinninghe Damsté (6885257), Syee Weldeab (7454750), Isla S Castañeda (6971912), Enno Schefuß (6886100), Stefan Schouten (6885260), Sinninghe Damsté, Jaap S   +11 more
core   +1 more source

Sedimentary lipid biomarkers in the magnesium rich and highly alkaline Lake Salda (south-western Anatolia)

Journal of Limnology, 2016
Lake Salda located in south-western Anatolia is characterized by the presence of living stromatolites and by a low diversity of both phytoplankton and zooplankton due to high pH and magnesium concentration.
Jérôme Kaiser, Bora Ön, Helge W. Arz, Sena Akçer-Ön   +3 more
doaj   +1 more source