Results 51 to 60 of about 95,714 (157)

Application of Stable Isotopes in Identifying the Sources and Formation of Sulfate and Nitrate in PM_2.5: A Review

Atmosphere
Sulfate and nitrate are important components of atmospheric PM2.5, which is the main contributor of haze. Therefore, studying the sources and formation mechanisms of atmospheric sulfate and nitrate is very important for the prevention and control of haze
Jiamei Peng, Chen Cheng, Shanshan Wang, Gongren Hu, Jinpei Yan, Ruilian Yu   +5 more
doaj   +1 more source

The niche of shrimp stocks (Xiphopenaeus kroyeri Heller, 1862) from southeastern Brazil: a stable isotope approach

Journal of Threatened Taxa, 2020
The penaeid shrimp Xiphopenaeus kroyeri is the second most important species of crustacean in Brazilian fisheries. Stable isotopes of carbon and nitrogen are chemical proxies to provide quantitative information about the consumer isotopic niche, which is
Keltony de Aquino Ferreira, Leandro Rabello Monteiro, Ana Paula Madeira Di Beneditto   +2 more
doaj   +1 more source

Laboratory Assessment of the Impact of Chemical Oxidation, Mineral Dissolution, and Heating on the Nitrogen Isotopic Composition of Fossil‐Bound Organic Matter

Geochemistry, Geophysics, Geosystems, 2022
Fossil‐bound organic material holds great potential for the reconstruction of past changes in nitrogen (N) cycling. Here, with a series of laboratory experiments, we assess the potential effect of oxidative degradation, fossil dissolution, and thermal ...
Alfredo Martínez‐García, Jonathan Jung, Xuyuan E. Ai, Daniel M. Sigman, Alexandra Auderset, Nicolas N. Duprey, Alan Foreman, François Fripiat, Jennifer Leichliter, Tina Lüdecke, Simone Moretti, Tanja Wald   +11 more
doaj   +1 more source

Stable isotopes in diatom silica [PDF]

, 2010
Diatom silica is a form of biogenic opal (SiO2.nH2O, Figure 1) containing oxygen, silicon, carbon and nitrogen isotopes that can be used in lacustrine and marine paleoenvironmental studies.
Leng, Melanie J., Swann, George E.A.
core  

Nitrogen isotope ratio (δ15N): a nearly unexplored indicator that provides useful information in viticulture

OENO One
The study of the natural abundance of nitrogen-stable isotopes is an aspect of viticulture research that has received limited attention. While stable isotopes of carbon, oxygen and hydrogen have received significant attention, nitrogen isotope ratio ...
Luis Gonzaga Santesteban, Maite Loidi, Inés Urretavizcaya, Mónica Galar, Sara Crespo-Martínez, José Bernardo Royo, Carlos Miranda   +6 more
doaj   +1 more source

Nitrogen isotope analysis of ammonium and glycine [PDF]

, 2005
Stable isotope techniques can be used as a tool in nitrogen cycling studies of different ecosystems. The studies are based on measurement of the heavy (15N)- to- light (14N) isotopic ratios of nitrogen in different biospheric pools.
Norlin, Elin
core  

Long-term carbon and nitrogen dynamics at SPRUCE revealed through stable isotopes in peat profiles [PDF]

, 2017
Peatlands encode information about past vegetation dynamics, climate, and microbial processes. Here, we used δ15N and δ13C patterns from 16 peat profiles to deduce how the biogeochemistry of the Marcell S1 forested bog in northern Minnesota responded to ...
Chen, Janet, Hanson, Paul J., Hobbie, Erik A., Hofmockel, Kirsten S., Iversen, Colleen M., McFarlane, Karis J., Thorp, Nathan R.   +6 more
core   +3 more sources

Seabird Modulations of Isotopic Nitrogen on Islands

PLoS ONE, 2012
The transport of nutrients by migratory animals across ecosystem boundaries can significantly enrich recipient food webs, thereby shaping the ecosystems' structure and function. To illustrate the potential role of islands in enabling the transfer of matter across ecosystem boundaries to be gauged, we investigated the influence of seabirds on nitrogen ...
Caut, Stéphane, Angulo, Elena, Pisanu, Benoît, Ruffino, Lise, Faulquier, Lucie, Lorvelec, Olivier, Chapuis, Jean-Louis, Pascal, Michel, Vidal, Eric, Courchamp, Frank   +9 more
openaire   +10 more sources

Stable Isotope Compositions of Wild and Farmed S. Paramoamosion and its Implication for Tracebility

Journal of Isotopes, 2014
To evaluate the possibility of using stable isotopes for discriminating wild and farmed mangrove crabs, Stable carbon and nitrogen isotope ratios of Scylla paramamosion tissues were analyzed. The carbon and nitrogen isotope ratios of wild S. paramamosion
GUO Jie-min1,2;LIN Guang-hui1,3
doaj   +1 more source

On the relationship between collagen- and carbonate-derived carbon isotopes with implications for the inference of carnivore dietary behavior

Frontiers in Ecology and Evolution, 2022
Studies of Rancho La Brea predators have yielded disparate dietary interpretations when analyzing bone collagen vs. enamel carbonate—requiring a better understanding of the relationship between stable carbon isotopes in these tissues.
Larisa R. G. DeSantis, Larisa R. G. DeSantis, Larisa R. G. DeSantis, Robert S. Feranec, John Southon, Thure E. Cerling, John Harris, Wendy J. Binder, Wendy J. Binder, Joshua E. Cohen, Joshua E. Cohen, Joshua E. Cohen, Aisling B. Farrell, Emily L. Lindsey, Emily L. Lindsey, Emily L. Lindsey, Julie Meachen, Julie Meachen, Frank Robin O'Keefe, Frank Robin O'Keefe, Gary T. Takeuchi   +20 more
doaj   +1 more source