Nutritional stress by means of high C:N ratios in the diet and starvation affects nitrogen isotope ratios and trophic fractionation of omnivorous copepods
Sign Up to like & getrecommendations! Published in 2019 at "Oecologia"
DOI: 10.1007/s00442-019-04438-5
Abstract: Nutritional stress, from feeding on low-quality diets or starvation, may cause changes in consumers’ nitrogen isotope ratios (δ15N = 15N/14N) and trophic fractionation (∆15N = δ15Nconsumer − δ15Nfood source), however, research has shown mixed results in the magnitude and the direction… read more here.
Keywords: nitrogen isotope; starvation; nutritional stress; isotope ratios ... See more keywords
Do Uncharred Plants Preserve Original Carbon and Nitrogen Isotope Compositions?
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Archaeological Method and Theory"
DOI: 10.1007/s10816-018-9390-2
Abstract: The isotopic compositions of plants can provide significant insights into paleodiets, ancient agricultural activities, and past environments. Isotopic compositions of charred (aka carbonized) ancient plant remains are typically preferred over those of uncharred/uncarbonized plants, both… read more here.
Keywords: nitrogen isotope; plant; uncharred plants; carbon nitrogen ... See more keywords
Nitrogen isotope composition of ammonium in PM2.5 in the Xiamen, China: impact of non-agricultural ammonia
Sign Up to like & getrecommendations! Published in 2019 at "Environmental Science and Pollution Research"
DOI: 10.1007/s11356-019-05813-8
Abstract: Since NH3 is a significant precursor to ammonium in PM2.5 and contributes significantly to atmospheric nitrogen deposition but largely remains unregulated in China, the insight into the source of NH3 emissions by the isotopic investigation… read more here.
Keywords: nitrogen isotope; pm2; nh3; ammonium pm2 ... See more keywords
Nitrogen isotope compositions of the Upper Triassic Chang 7 Shale, Ordos Basin, North China: Implications for depositional redox conditions
Sign Up to like & getrecommendations! Published in 2019 at "Marine and Petroleum Geology"
DOI: 10.1016/j.marpetgeo.2019.06.027
Abstract: Abstract Nitrogen isotope (δ15N) analysis has been used to evaluate depositional redox conditions in well-preserved sedimentary systems; however, fewer N-isotope studies have been performed to reconstruct the redox conditions in lacustrine shales. In this paper,… read more here.
Keywords: chang shale; redox conditions; nitrogen isotope; chang ... See more keywords
New Insights into the Nitrogen Isotope Compositions in Coals from the Huainan Coalfield, Anhui Province, China: Influence of the Distribution of Nitrogen Forms
Sign Up to like & getrecommendations! Published in 2018 at "Energy & Fuels"
DOI: 10.1021/acs.energyfuels.8b02467
Abstract: A combination of nitrogen isotope analysis and X-ray photoelectron spectroscopy techniques was used to characterize nitrogen isotopic compositions and organic nitrogen forms in a total of 11 coal samples from China. A range of δ15N… read more here.
Keywords: nitrogen; nitrogen forms; nitrogen isotope; distribution nitrogen ... See more keywords
Nitrogen Isotope Differences between Major Atmospheric NOy Species: Implications for Transformation and Deposition Processes
Sign Up to like & getrecommendations! Published in 2020 at "Environmental Science and Technology Letters"
DOI: 10.1021/acs.estlett.0c00105
Abstract: Nitrogen isotopes (δ15N) can trace sources of major inorganic NOy species (here referring to nitrogen dioxide (NO2), nitric acid (HNO3), and nitrate (NO3–)) in the atmosphere. However, δ15N variati... read more here.
Keywords: nitrogen isotope; noy; noy species; major atmospheric ... See more keywords
Nitrogen isotope discrimination in open-pollinated and hybrid canola suggests indirect selection for enhanced ammonium utilization
Sign Up to like & getrecommendations! Published in 2022 at "Frontiers in Plant Science"
DOI: 10.3389/fpls.2022.1024080
Abstract: Nitrogen isotope discrimination (Δ15N) may have utility as an indicator of nitrogen use in plants. A simple Δ15N-based isotope mass balance (IMB) model has been proposed to provide estimates of efflux/influx (E/I) ratios across root… read more here.
Keywords: ammonium; isotope discrimination; nitrogen isotope; canola ... See more keywords