Results 31 to 40 of about 4,052,823 (334)

Do oxygen isotope values in collagen reflect the ecology and physiology of neotropical mammals?

Frontiers in Ecology and Evolution, 2015
Stable isotope data provide insight into the foraging ecology of animals. Traditionally, carbon and nitrogen isotope values have been used to infer dietary and habitat preferences.
Brooke eCrowley, Amanda Dawn Melin, Amanda Dawn Melin, Justin Douglas Yeakel, Justin Douglas Yeakel, Nathaniel Jay Dominy   +5 more
doaj   +1 more source

Divergent biochemical fractionation, not convergent temperature, explains cellulose oxygen isotope enrichment across latitudes. [PDF]

PLoS ONE, 2011
Recent findings based on the oxygen isotope ratios of tree trunk cellulose indicate that the temperature of biomass production in biomes ranging from boreal to subtropical forests converge to an average leaf temperature of 21.4°C.
Leonel Sternberg, Patricia Fernandes Vendramini Ellsworth   +1 more
doaj   +1 more source

Improvements in the preparation of phosphate for oxygen isotope analysis from soils and sediments. [PDF]

PLoS ONE, 2018
In contrast to the successful preparation of phosphate for oxygen isotope analysis from water samples, there are still a series of problems for similar analyses from soils and sediments.
Zifu Xu, Tao Huang, Xijie Yin
doaj   +1 more source

Influences of Acid Fractionation on Determination of Carbon and Oxygen Isotope Analysis of Carbonates Using GasBench-IRMS

Zhipu Xuebao
Phosphoric acid is commonly used to react with carbonates to generate carbon dioxide for determining the carbon and oxygen isotopes of carbonates by using online reaction device, for example, GasBench coupled to an isotope ratio mass spectrometer (IRMS).
Nan WANG, Yan-yan ZHAO, You-rong TIAN
doaj   +1 more source

Hydroclimate footprint of pan-Asian monsoon water isotope during the last deglaciation

Science Advances, 2021
Pan-Asian monsoon water isotope variability is found accompanied by a continental-scale hydroclimate footprint. Oxygen isotope speleothem records exhibit coherent variability over the pan-Asian summer monsoon (AM) region. The hydroclimatic representation
C. He, Z. Liu, B. Otto-Bliesner, E. Brady, C. Zhu, R. Tomas, P. U. Clark, J. Zhu, A. Jahn, S. Gu, J. Zhang, J. Nusbaumer, D. Noone, H. Cheng, Yicheng Wang, M. Yan, Y. Bao   +16 more
semanticscholar   +1 more source

GuobaoXu/Age-related-climate-response-of-tree-ring-stable-carbon-and-oxygen-isotope: Age-related-climate-response-of-tree-ring-stable-carbon-and-oxygen-isotope

, 2020
This code and data are used for analyses of age-dependent climate response in tree-ring stable carbon and oxygen ...
Guobao Xu
core   +1 more source

Technical Note: Silica stable isotopes and silicification in a carnivorous sponge Asbestopluma sp. [PDF]

Biogeosciences, 2015
The stable isotope composition of benthic sponge spicule silica is a potential source of palaeoceanographic information about past deep seawater chemistry.
K. R. Hendry, G. E. A. Swann, M. J. Leng, M. J. Leng, H. J. Sloane, C. Goodwin, J. Berman, M. Maldonado   +7 more
doaj   +1 more source

Advances and Challenges in Palaeoenvironmental Studies Based on Oxygen Isotope Composition of Skeletal Carbonates and Phosphates

Geosciences, 2021
Oxygen isotopes are widely used in palaeoenvironmental and palaeoclimatic studies as they record variations in the precipitation temperature of biogenic carbonates and phosphates.
Hubert Wierzbowski
doaj   +1 more source

Stable oxygen isotope analysis on sediment core V28-238

, 1973
Stable oxygen isotope analysis on sediment core V28 ...
Nicholas J Shackleton (6886052), Neil D Opdyke (6886655), Opdyke, Neil D, Shackleton, Nicholas J   +3 more
core   +1 more source

Stable isotope values in modern bryozoan carbonate from New Zealand and implications for paleoenvironmental interpretation [PDF]

, 2004
Bryozoan carbonate contains useful geochemical evidence of temperate shelf paleoenvironments. Stable isotope values were determined for 103 modern marine bryozoan skeletons representing 30 species from New Zealand. δ18O values range from -1.4 to 2.8 VPDB,
Nelson, Campbell S., Campbell S. Nelson, Marcus M. Key, Smith, Abigail M., Key, Marcus M., Patterson, William P., Abigail M. Smith, William P. Patterson   +7 more
core   +1 more source