Biomarker proxies for reconstructing Quaternary climate and environmental change

EL McClymont, H Mackay… - Journal of …, 2023 - Wiley Online Library
To reconstruct past environmental changes, a range of indirect or proxy approaches can be
applied to Quaternary archives. Here, we review the complementary and novel insights that …

[HTML][HTML] Revised fractional abundances and warm-season temperatures substantially improve brGDGT calibrations in lake sediments

JH Raberg, DJ Harning, SE Crump, G de Wet… - …, 2021 - bg.copernicus.org
Distributions of branched glycerol dialkyl glycerol tetraethers (brGDGTs) are frequently
employed for reconstructing terrestrial paleotemperatures from lake sediment archives …

Production of diverse brGDGTs by Acidobacterium Solibacter usitatus in response to temperature, pH, and O2 provides a culturing perspective on brGDGT proxies …

TA Halamka, JH Raberg, JM McFarlin… - …, 2023 - Wiley Online Library
Branched glycerol dialkyl glycerol tetraethers (brGDGTs) are bacterial membrane lipids that
are frequently employed as paleoenvironmental proxies because of the strong empirical …

FROG: A global machine-learning temperature calibration for branched GDGTs in soils and peats

P Véquaud, A Thibault, S Derenne, C Anquetil… - … et Cosmochimica Acta, 2022 - Elsevier
Branched glycerol dialkyl glycerol tetraethers (brGDGTs) are a family of bacterial lipids
which have emerged over time as robust temperature and pH paleoproxies in continental …

Paleoaltimetry performance of coupled δ2Hwax-MBT5ME′ proxy in semiarid conditions

J Liu, Z An, L Zhang, J Zhao, X Li, S Ye… - Quaternary Science …, 2023 - Elsevier
The multi-proxy approach is becoming an effective means to reduce uncertainties and errors
compared to the single proxy approach. In this study, we investigated leaf wax biomarker …

[HTML][HTML] GDGT distribution in tropical soils and its potential as a terrestrial paleothermometer revealed by Bayesian deep-learning models

C Häggi, BDA Naafs, D Silvestro… - … et Cosmochimica Acta, 2023 - Elsevier
Branched and isoprenoidal glycerol dialkyl glycerol tetraethers (br-and isoGDGTs) are
membrane lipids produced by bacteria and archaea, respectively. These lipids form the …

Branched GDGT-based temperature calibrations from Central European lakes

T Bauersachs, CJ Schubert, C Mayr, A Gilli… - Science of The Total …, 2024 - Elsevier
Branched glycerol dialkyl glycerol tetraethers (brGDGTs) are common in lake sediments,
where they are frequently employed to infer mean annual air temperatures (MAAT) or air …

[HTML][HTML] BrGDGT lipids in cold regions reflect summer soil temperature and seasonal soil water chemistry

JH Raberg, SE Crump, G de Wet, DJ Harning… - … et Cosmochimica Acta, 2024 - Elsevier
The distribution of brGDGT lipids produced by soil bacteria has been used to reconstruct
temperatures in marine and terrestrial settings as far back as the Cretaceous period …

Near-universal trends in brGDGT lipid distributions in nature

JH Raberg, GH Miller, Á Geirsdóttir, J Sepúlveda - Science Advances, 2022 - science.org
Bacterial brGDGT lipids are a prevalent tool in studies of terrestrial paleoclimate. Their
distributions correlate empirically with environmental temperature and pH, and their ubiquity …

Identifying the drivers of GDGT distributions in alkaline soil profiles within the Serengeti ecosystem

MD Peaple, EJ Beverly, B Garza, S Baker, NE Levin… - Organic …, 2022 - Elsevier
Surface soil glycerol dialkyl glycerol tetraether (GDGT) distributions are influenced by mean
annual air temperature as well as soil pH. However, the controls on GDGT distributions with …