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Isotope hydrology and baseflow geochemistry in natural and human-altered watersheds in the Inland Pacific Northwest, USA
(2015-02-18)
This study presents a stable isotope hydrology and geochemical analysis in the inland Pacific Northwest (PNW) of the USA. Isotope ratios were used to estimate mean transit times (MTTs) in natural and human-altered watersheds ...
Ten-year helium anomaly prior to the 2014 Mt Ontake eruption
(Nature, 2015)
Mt Ontake in central Japan suddenly erupted on 27th September 2014, killing 57 people with 6 still missing. It was a hydro-volcanic eruption and new magmatic material was not detected. There were no precursor signals such ...
Protocols for in situ measurement of oxygen isotopes in goethite by ion microprobe
(Elsevier B.V., 2020-02-05)
We present protocols for high-spatial resolution measurement of oxygen isotope ratios of goethite (alpha-FeOOH) with the Sensitive High Mass Resolution Ion Microprobe - Stable Isotopes (SHRIMP-SI) and propose a natural ...
Nitrogen source contribution in sugarcane-inoculated plants with diazotrophic bacterias under urea-N fertigation management
(Springer, 2019-06-01)
Although Brazilian sugarcane crops use lower nitrogen rates when compared to other producing countries, the biological nitrogen fixation (BFN) could be performed aiming to reduce costs, since almost all nitrogen fertilization ...
Evaluation of childhood nutrition by dietary survey and stable isotope analyses of hair and breath
(Wiley-liss, Div John Wiley & Sons Inc, 2018-05)
Objectives: The natural abundances of carbon, nitrogen, and sulfur stable isotopes in hair, and of carbon isotopes in breath serve as quantitative biomarkers of protein and carbohydrate sources, but applicability of isotopes ...
Where does the chilean aconcagua river come from? Use of natural tracers for water genesis characterization in glacial and periglacial environments
(Molecular Diversity Preservation International, 2020-09)
The Aconcagua river basin (Chile, 32◦S) has suffered the effects of the megadrought over the last decade. The severe snowfall deficiency drastically modified the water supply to the catchment headwaters. Despite the ...
Isotopic Discrimination Factors (Delta C-13 and Delta N-15) between Tissues and Diet of the Broad-Snouted Caiman (Caiman latirostris)
(Soc Study Amphibians Reptiles, 2014-09-01)
Natural variation in stable isotope ratios is a useful tool in diet studies. However, the correct interpretation of isotopic data is reliant on proper estimates of discrimination factors. This study aimed to describe the ...
Measurement of the natural variation of 13C:12C ratio in leaves at Reserva Ducke Forest, central Amazonia
(Elsevier B.V., 1991-02-01)
Investigation of carbon isotope fractionation by plants was carried out at two sub-areas located in Reserva Ducke, central Amazonia: open reserve (virgin forest with low density of plant species); and closed reserve (virgin ...