Results 71 to 80 of about 655,736 (160)

Biomarker evidence of a serpentinite chemosynthetic biosphere at the Mariana forearc

Communications Earth & Environment
Present-day serpentinization systems, such as that at the Mariana forearc, are prominent sources of reduced volatiles, including molecular hydrogen (H2) and methane (CH4), and are considered analogs for chemosynthetic ecosystems on early Earth.
Palash Kumawat, Elmar Albers, Wolfgang Bach, Frieder Klein, Walter Menapace, Christoph Vogt, Florence Schubotz   +6 more
doaj   +1 more source

Deglacial Permafrost Organic Carbon Delivery at the Northern Svalbard Continental Margin: Insights From Tetraether Lipids and Plant Biomarkers

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 6, June 2026.
Abstract Degradation of Arctic permafrost due to global warming and sea level rise could trigger positive feedbacks, exacerbating climate change. However, uncertainties remain on how permafrost systems may respond because we lack a complete understanding of the permafrost‐climate feedback.
Mathia Sabino, Alessio Nogarotto, Riko Noormets, Teena Chauhan, Gesine Mollenhauer, Jens Hefter, Tommaso Tesi   +6 more
wiley   +1 more source

Influence of Growing Season Length on Orbital‐Scale Temperature Evolution Across the Chinese Loess Plateau

Paleoceanography and Paleoclimatology, Volume 41, Issue 6, June 2026.
Abstract Insight in the spatial evolution of absolute land temperature is crucial for understanding the dynamics of East Asian Summer Monsoon (EASM) precipitation, which governs the water supply for over 20% of the global population. The spatiotemporal evolution of land surface temperatures in East Asia is however not well documented.
Jingjing Guo, Martin Ziegler, Qiuzhen Yin, Zhipeng Wu, Louise Fuchs, Hao Lu, Youbin Sun, Francien Peterse   +7 more
wiley   +1 more source

Perspectives for Advancing Biotechnological Succinic Acid Production

Microbial Biotechnology, Volume 19, Issue 5, May 2026.
Succinic acid is an important molecule for sustainable chemical manufacturing, but its industrial production faces high costs and sustainability challenges, which are linked to feedstocks and excessive acid/base consumption. This opinion explores production routes based on next‐generation feedstocks and low‐pH fermentations to inspire novel cost ...
Christoph Gunkel, Bastian Blombach
wiley   +1 more source

Total Synthesis of the Membrane Spanning Tetraether Lipid brGDGT Ia and Elucidation of its Stereochemical Configuration [PDF]

Glycerol dialkyl glycerol tetraethers (GDGTs) are a group of membrane spanning lipids produced by both Archaea and Bacteria. Branched GDGTs (brGDGTs) are a class of these tetraether lipids known to be produced by certain bacteria and are commonly found ...
Minnaard, Adriaan J; id_orcid, Kopf, Sebastian H, Mahapatra, Samarpita, Halamka, Toby, Drost, Deborah A, Merten, Christian   +5 more
core   +1 more source

Preservation and degradation of ancient organic matter in mid-Miocene Antarctic permafrost [PDF]

Biogeosciences
The Antarctic environment is amongst the coldest and driest environments on Earth. The ultraxerous soils in the McMurdo Dry Valleys support exclusively microbial communities, however, 15 million years ago, a tundra ecosystem analogous to present-day ...
M. Verret, S. Naeher, S. Naeher, D. Lacelle, C. Ginnane, W. Dickinson, K. Norton, J. Turnbull, J. Turnbull, R. Levy, R. Levy   +10 more
doaj   +1 more source

Biogeochemical controls on glycerol dialkyl glycerol tetraether lipid distributions in sediments characterized by diffusive methane flux

, 2011
The TEX86 (TetraEther indeX of tetraethers consisting of 86 carbon atoms) is a proxy for sea surface temperature (SST) based on the distribution of isoprenoidal glycerol dialkyl glycerol tetraether (GDGT) membrane lipids synthesized by marine pelagic ...
Sinninghe Damsté, Jaap S., Damsté, Jaap S Sinninghe, Alfred Aquilina, Weijers, Johan W H, Richard D. Pancost, Lim, K.L.H., Aquilina, A., Jaap S. Sinninghe Damsté, Sinninghe Damsté, J.S., Johan W. H. Weijers, Weijers, Johan W.H., Pancost, Richard D., Weijers, J.W.H., Pancost, R.D., Katie L. H. Lim, Lim, Katie L H, Lim, Katie L.H., Aquilina, Alfred   +17 more
core   +1 more source

Disentangling influences of climate variability and lake-system evolution on climate proxies derived from isoprenoid and branched glycerol dialkyl glycerol tetraethers (GDGTs): the 250 kyr Lake Chala record [PDF]

Biogeosciences
High-resolution paleoclimate records from tropical continental settings are greatly needed to advance understanding of global climate dynamics. The International Continental Scientific Drilling Program (ICDP) project DeepCHALLA recovered a 214.8 m long ...
A. J. Baxter, F. Peterse, D. Verschuren, A. Maitituerdi, N. Waldmann, J. S. Sinninghe Damsté, J. S. Sinninghe Damsté   +6 more
doaj   +1 more source

Discovery, structure and mechanism of a tetraether lipid synthase. [PDF]

Nature, 2022
Lloyd CT, Iwig DF, Wang B, Cossu M, Metcalf WW, Boal AK, Booker SJ.   +6 more
europepmc   +1 more source

Effects of a Novel Archaeal Tetraether-Based Colipid on the In Vivo Gene Transfer Activity of Two Cationic Amphiphiles

, 2016
Gene therapy for treating inherited diseases like cystic fibrosis might be achieved using multimodular nonviral lipid-based systems. To date, most optimizations have concerned cationic lipids rather than colipids.
Tristan Montier (1593586), Thierry Benvegnu (1757260), Pierre Lehn (1593598), Tony Le Gall (1593583), Julie Barbeau (1757257), Stephen C. Hyde (1409329), Mathieu Berchel (1593589), Deborah R. Gill (1757251), Claude Férec (1757254), Jelena Jeftić (1757266), Paul-Alain Jaffrès (1593592), Sylvain Barrier (765558), Loïc Lemiègre (1757263), Cristelle Meriadec (1747870), Franck Artzner (1488223)   +14 more
core   +1 more source