Weakened AMOC related to cooling and atmospheric circulation shifts in the last interglacial Eastern Mediterranean [PDF]
Nature Communications, 2023 There is limited understanding of temperature and atmospheric circulation changes that accompany an Atlantic Meridional Overturning Circulation (AMOC) slowdown beyond the North Atlantic realm.
Elan J. Levy +11 more
doaj +2 more sources
Nitrosopumilus as main source of isoprenoid glycerol dialkyl glycerol tetraether lipids in the central Baltic Sea [PDF]
Frontiers in Microbiology, 2023 Nitrososphaeria in the phylum Crenarchaeota, is a widespread archaeal class in the oceanic realm, playing an important role in the marine carbon and nitrogen cycle.
Anna Katharina Wittenborn +7 more
doaj +2 more sources
Warm, not cold temperatures contributed to a Late Miocene reef decline in the Coral Sea [PDF]
Scientific Reports, 2023 Evidence shows that in the modern ocean, coral reefs are disappearing, and these losses are tied to climate change. However, research also shows that coral reefs can adapt rapidly to changing conditions leading some researchers to suggest that some reef ...
Benjamin Petrick +5 more
doaj +2 more sources
Early Cretaceous sea surface temperature evolution in subtropical shallow seas [PDF]
Scientific Reports, 2021 Late Cretaceous sea surface temperatures (SST) are, amongst others, traditionally reconstructed by compiling oxygen isotope records of planktonic foraminifera obtained from globally distributed pelagic IODP drill cores.
Stefan Huck, Ulrich Heimhofer
doaj +2 more sources
LIPOTHERM: A Calibration Framework for GDGT Paleothermometry Based on Machine Learning
Geochemistry, Geophysics, GeosystemsSST reconstruction from glycerol dialkyl glycerol tetraethers (GDGT) preserved in marine sediments is an important tool in quantitative paleoclimatology. These reconstructions require calibration frameworks that provide mapping between sediment GDGT data
Vikash Kumar +2 more
doaj +2 more sources
Environmental Controls on Crenarchaeol Distributions in Hydrothermal Springs. [PDF]
Environ MicrobiolThe optimal pH and temperature for crenarchaeol (a unique archaeal lipid) production in hydrothermal springs are 7.4°C and 46°C, respectively, which has important implications for archaeal evolution. Our study also indicates that pH is the most important environmental variable for archaeal lipid membrane compositions.
Calhoun AN +7 more
europepmc +2 more sources
Frontiers in Marine Science, 2021 Isoprenoid glycerol dialkyl glycerol tetraethers (isoGDGTs) derived from archaea are lipid biomarkers that exhibit high sensitivity to changes in water temperature, leading to the widespread application of the isoGDGT-based tetraether index of 86 carbon ...
Jinqiang Guo +38 more
doaj +1 more source
Century-Long Warming Trends in the Upper Water Column of Lake Tanganyika. [PDF]
PLoS ONE, 2015 Lake Tanganyika, the deepest and most voluminous lake in Africa, has warmed over the last century in response to climate change. Separate analyses of surface warming rates estimated from in situ instruments, satellites, and a paleolimnological ...
Benjamin M Kraemer +11 more
doaj +1 more source
Application of microbial membrane tetraether lipids in speleothems
Frontiers in Ecology and Evolution, 2023 Glycerol dialkyl glycerol tetraethers (GDGTs), which are derived from microbial membranes, occur widely in soils, peats, lake sediments, marine sediments, hot springs, and other environments.
Jingjie Zang +7 more
doaj +1 more source
Asian Winter Monsoon Imprint on the Water Column Structure at the Northern South China Sea Coast
Frontiers in Earth Science, 2021 Coastal regions of the northern South China Sea (SCS) strongly interact with the Asian monsoon circulation (AMC). Thus, variations of sea surface temperature (SST) here are newly suggested to document AMC changes in an effective manner, but additional ...
Yancheng Zhang +11 more
doaj +1 more source