Journal of Geophysical Research: Biogeosciences, Volume 130, Issue 12, December 2025.Abstract Reliable paleotemperature proxies are essential for reconstructing past climate. To refine interpretation of the MBT'5ME index, based on bacterial brGDGT lipids, a year‐long study was conducted in Rotsee, Switzerland, a seasonally stratified lake with a 4–21°C temperature range.
Fatemeh Ajallooeian +5 more
wiley +1 more source
Interannual and (multi-)decadal variability in the sedimentary BIT index of Lake Challa, East Africa, over the past 2200 years: assessment of the precipitation proxy [PDF]
, 2016 The branched vs. isoprenoid tetraether (BIT) index is based on the relative abundance of branched tetraether lipids (brGDGTs) and the isoprenoidal GDGT crenarchaeol.
Blaauw, M. +5 more
core +3 more sources
Stepwise Cooling Events in the Western Arctic at 8.2 and 4.2 ka: Proxy Development and Application
Paleoceanography and Paleoclimatology, Volume 40, Issue 12, December 2025.Abstract Hydroxylated glycerol dialkyl glycerol tetraether (GDGT)‐based proxies have recently been proposed for reconstructing sea surface temperatures (SSTs) in polar oceans, but their reliability has not yet been sufficiently validated. We investigated the spatial distribution of hydroxylated GDGTs in surface sediments from the western Arctic Ocean ...
Kenta Suzuki +3 more
wiley +1 more source
Spatial and seasonal contrasts of sedimentary organic matter in floodplain lakes of the central Amazon basin [PDF]
, 2015 In this study, we investigated the seasonal andspatial pattern of sedimentary organic matter (SOM) in fivefloodplain lakes of the central Amazon basin (Cabaliana,Janauaca, Canaçari, Mirituba and Curuai) which have differentmorphologies, hydrodynamics and
Abril, G. +8 more
core +9 more sources
Planktonic Lipidome Responses to Aeolian Dust Input in Low-Biomass Oligotrophic Marine Mesocosms
Frontiers in Marine Science, 2017 The effect and fate of dry atmospheric deposition on nutrient-starved plankton in the Eastern Mediterranean Sea (EMS; Crete, 2012) was tested by spiking oligotrophic surface seawater mesocosms (3 m3) with Saharan dust (SD; 1.6 g L−1; 23 nmol NOx mg−1; 2 ...
Travis B. Meador +6 more
doaj +1 more source
The last forests on Antarctica: Reconstructing flora and temperature from the Neogene Sirius Group, Transantarctic Mountains [PDF]
, 2018 Fossil-bearing deposits in the Transantarctic Mountains, Antarctica indicate that, despite the cold nature of the continent’s climate, a tundra ecosystem grew during periods of ice sheet retreat in the mid to late Neogene (17–2.5 Ma), 480 km from the ...
Ackert +91 more
core +3 more sources
Rapid Communications in Mass Spectrometry, Volume 39, Issue 22, 30 November 2025.ABSTRACT Rationale The stable carbon isotopic composition (δ13C) of individual lipids is of great value in studying carbon cycling. Among those, microbial lipids in sediments impacted by high methane turnover stand out due to their uniquely depleted isotopic fingerprint.
Janina Groninga +3 more
wiley +1 more source
Drug Delivery, 2019 Photodynamic therapy (PDT) is an established noninvasive tumor treatment. The hydrophobic natural occurring pigment hypericin shows a lot of attractive properties for the application in PDT.
Nikola Plenagl +7 more
doaj +1 more source
Archaeal and bacterial tetraether lipids in tropical ponds with contrasted salinity (Guadeloupe, French West Indies): Implications for tetraether-based environmental proxies [PDF]
, 2015 International audienceThe occurrence and distribution of archaeal and bacterial glycerol dialkyl glycerol tetraether lipids (GDGTs) in continental saline environments have been rarely investigated.
Belmahdi, Imène +4 more
core +3 more sources
Identification and significance of unsaturated archaeal tetraether lipids in marine sediments [PDF]
Rapid Communications in Mass Spectrometry, 2014 RATIONALE Studies of archaeal glycerol dibiphytanyl glycerol tetraethers (GDGTs) in the environment and cultures have exclusively focused on compounds with fully saturated alkyl moieties. Here we report a number of novel unsaturated GDGTs (uns‐GDGTs) whose alkyl chains contain up to six double bonds and zero to ...
Chun Zhu +5 more
openaire +2 more sources