Results 101 to 110 of about 26,538 (206)

Environmental dynamics and timing of the late Eemian interglacial to the Weichselian pleniglacial at Lichtenberg, Germany: implications for the Oerel and Glinde interstadials

Boreas, EarlyView.
The terrestrial sediment archives of northern Germany provide important insights into Late Pleistocene climate variability, but continuous and well‐dated records remain rare. In particular, the age and stratigraphic position of the Oerel and Glinde interstadials within the Early Weichselian to pleniglacial transition remain poorly constrained.
Alexis Badai Samudra, Michael Hein, Martin Theuerkauf, Neda Rahimzadeh, Marcel Weiss, David Colin Tanner, Brigitte Urban   +6 more
wiley   +1 more source

δ2H, δ18O, and δ13C behave differently when assessing transpirative and photosynthetic performance of wheat under contrasting VPD conditions

Crop Journal
Carbon (δ13C) and oxygen (δ18O) isotope compositions are considered indicators of the effect of water conditions on plant photosynthesis (δ13C) and transpiration (δ18O).
Fatima Zahra Rezzouk, Maria Dolors Serret, José Luis Araus, Rut Sanchez Bragado   +3 more
doaj   +1 more source

Negative correlation between altitudes and oxygen isotope ratios of seeds: exploring its applicability to assess vertical seed dispersal

Ecology and Evolution, 2016
Vertical seed dispersal, which plays a key role in plant escape and/or expansion under climate change, was recently evaluated for the first time using negative correlation between altitudes and oxygen isotope ratio of seeds.
Shoji Naoe, Ichiro Tayasu, Takashi Masaki, Shinsuke Koike   +3 more
doaj   +1 more source

Quantifying errors in coral-based ENSO estimates: toward improved forward modeling of δ18O

, 2013
The oxygen isotopic ratio (δ18O) in tropical Pacific coral skeletons reflects past El Niño-Southern Oscillation (ENSO) variability, but the δ18O-ENSO relationship is poorly quantified.
B Fox-Kemper (16153652), Helen McGregor (19584091), S Stevenson (13637581), S J Phipps (20244492)   +3 more
core  

Appendix B. Multivariate analysis of δ13C and δ18O signatures of fish otoliths.

, 2016
Multivariate analysis of δ13C and δ18O signatures of fish ...
Chantal M. Huijbers (364776), Adolphe O. Debrot (248449), Ivan Nagelkerken (320270), Eelke Jongejans (199890)   +3 more
core   +1 more source

Ecological variability of Hippopotamus antiquus from the late Early–Middle Pleistocene of Megalopolis Basin (Greece): Evidence for dynamic habitats in a glacial microrefugium

Boreas, EarlyView.
This study investigates the ecology of the extinct European Hippopotamus from the late Early–Middle Pleistocene (c. 900–400 ka) sequence of the Megalopolis Basin, a glacial microrefugium for temperate taxa in southern Greece. Using stable carbon (δ13C) and oxygen (δ18O) isotope analyses and microwear analyses of Hippopotamus dental elements, we ...
Effrosyni Roditi, Gabriele Russo, Hervé Bocherens, George E. Konidaris, Athanassios Athanassiou, Florent Rivals, Vangelis Tourloukis, Eleni Panagopoulou, Panagiotis Karkanas, Katerina Harvati   +9 more
wiley   +1 more source

Tree-ring δ18O and δ2H stable isotopes reflect the global meteoric water line

Frontiers in Earth Science
IntroductionThe Global Meteoric Water Line (GMWL) describes the linear relationship between stable hydrogen (δ2H) and oxygen (δ18O) isotopes in precipitation over large spatial scales and therefore represents a unique reference for water isotopic values.
Tito Arosio, Ulf Büntgen, Ulf Büntgen, Ulf Büntgen, Kurt Nicolussi, Gina E. Moseley, Matthias Saurer, Thomas Pichler, M. Paul Smith, Emilia Gutierrez, Laia Andreu-Hayles, Laia Andreu-Hayles, Laia Andreu-Hayles, Irka Hajdas, Tatiana Bebchuk, Markus Leuenberger, Markus Leuenberger   +16 more
doaj   +1 more source

Triple Oxygen Isotope Compositions of Isotopic Reference Waters: Implications for VSMOW‐Scale and VSMOW–SLAP‐Scale Δ′17O Calibration

Geostandards and Geoanalytical Research, EarlyView.
Key Points Triple oxygen isotope ratios of two primary (VSMOW, SLAP) and twelve secondary water isotopic reference materials were precisely measured using BrF5 fluorination‐IRMS. The measured Δ'17OVSMOW value for SLAP (34 ± 6 per meg) demonstrates that VSMOW‐SLAP normalisation ensures interlaboratory comparability, but introduces systematic offsets for
Ryoji Tanaka, Andreas Pack, Tyler B. Coplen   +2 more
wiley   +1 more source

Diurnal to interannual rainfall δ18O variations in northern Borneo driven by regional hydrology [PDF]

, 2013
The relationship between climate variability and rainfall oxygen isotopic (δ18O) variability is poorly constrained, especially in the tropics, where many key paleoclimate records rely on past rainfall isotopes as proxies for hydroclimate. Here we present
Andrew Alex, anak Tuen, Cobb, Kim M., Adkins, Jess F., Clark, Brian, Sodemann, Harald, Moerman, Jessica W.   +5 more
core  

Development of Arsenopyrite Reference Materials (Sacra and Niko) for In situ Multiple Sulfur Isotope Measurement

Geostandards and Geoanalytical Research, EarlyView.
Key Points New arsenopyrite reference materials (Niko and Sacra) for in situ multiple sulfur isotope measurement. Niko and Sacra are homogenous, near‐stoichiometric arsenopyrite. Niko serves as a primary matrix‐matched reference material, with lower measurement repeatability; Sacra is recommended as a secondary reference and quality control material ...
Bruna Coldebella, Guillaume Barré, Crystal LaFlamme, Laure Martin, Pierre Cartigny   +4 more
wiley   +1 more source