Stable isotope analysis
Estimation of nutrient contributions from the ocean across a river basin using stable isotope analysis
... both δ 13 C and δ 15 N. The contribution of MDN to SOM in surface soils was evaluated by applying a two source mixing model based on stable isotope analysis (SIA) of carbon (δ 13 C) and nitrogen (δ ...
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An analytical system for stable isotope analysis on carbon monoxide using continuous-flow isotope-ratio mass spectrometry
... Figure 1. A diagram of the continuous-flow isotope-ratio mass spectrometry system for measuring 13 C and 18 O of CO. S 1 to S 8 represent the sample flasks; the connections to the flask can be changed to ...
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Did military orders influence the general population diet? Stable isotope analysis from Medieval Tomar, Portugal
... collagen stable isotope data from 33 human adult tibiae (15 females; 18 males) and 13 fauna re- mains (2 wild Sus; 2 domestic Sus; 1 juvenile Sus; 1 Canidae; 3 Bos; 1 Equus; 3 Ovicapridae) from Santa Maria ...
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Traceability of Bovine Meat and Bone Meal in Poultry by Stable Isotope Analysis
... also helped to reconstruct the dietary history of animals through the analysis of different tissues (De Niro & Epstein, 1978; Merve van der, 1982). Less scrupulous producers commonly adulterate food products ...
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A porewater – based stable isotope approach for the investigation of subsurface hydrological processes
... There are numerous techniques for extracting porewater from soil for stable isotope analysis (e.g. suction lysimeter, centrifugation of soil samples, distillation techniques). These methods are ...
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Effect of different healing stages on stable isotope ratios in skeletal lesion
... The diet of 23 adult individuals with skeletal lesions was also esti- mated and compared with the diet of those without lesions (Curto et al., 2019). The δ 15 N from skeletons with nonspecific generalized infections ...
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Long-term dietary change in Atlantic and Mediterranean Iberia with the introduction of agriculture: a stable isotope perspective
... populations due to distinctive isotopic signatures in these eco- systems, allowing generic discriminations (Jennings et al. 1997; Richards and Hedges 1999). Isotopic analyses across Atlantic coastal areas of Europe have ...
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Integrating stomach content and stable isotope analyses to quantify the diets of pygoscelid penguins.
... We found that using SCA data to a posteriori refine multi-source SIAR model outputs (Model 4) can provide greater resolution when estimating the contributions of isotopically similar prey species. When reducing our ...
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Carbon and Nitrogen Stable Isotope Values for Plants and Mammals in a Semi-Desert Region of Mongolia
... Stable isotope analysis can provide insight into the movement of elements across trophic levels and thus serve as a tool for understanding wildlife behavior and ecology (Gannes et ...obtained ...
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Food sources for Ruditapes philippinarum in a coastal lagoon determined by mass balance and stable isotope approaches.
... for stable isotope analysis of carbon and ...to analysis, the samples were treated with a chloroform–methanol mixture solution (2:1, v/v) for 24 h to remove lipids, filtered with a ...
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Salinity and stable oxygen isotope relationship in the Southwestern Atlantic: constraints to paleoclimate reconstructions
... the hydrographic data and seawater samples used in this study were collected during a quasi- synoptic oceanographic cruise conducted during austral Winter in the rV Antares from the Brazilian Navy, from June 04 to 19, ...
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Dissolved organic carbon lability and stable isotope shifts during microbial decomposition in a tropical river system
... in isotope signatures; Opsahl and Zepp (2001) have demonstrated that the isotope shift during photochemical ox- idation is caused by the preferential decomposition of lignin components, which are ...
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Chemistry waste and residues waters management at the stable isotope laboratory of the CENA/USP.
... Com o objetivo de avaliar o gerenciamento de resíduos e água residuária do laboratório foi realizado um balanço com relação ao custo dos processos de reciclagem e recuperação dos resíduo[r] ...
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Stable carbon isotope ratios of toluene in the boundary layer and the lower free troposphere
... the analysis, because the amounts of toluene in the samples are lower than the lowest values in the calibration and therefore our error estimates are not ...the analysis which we regard as an outlier (its δ ...
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Stable isotope evidence for trophic overlap of sympatric Mexican Lake Chapala silversides (Teleostei: Atherinopsidae: Chirostoma spp.)
... on stable isotope ...different stable isotope values, and could perhaps uncover finer scale energy flow paths in the Chapala food ...derived stable isotope information integrates ...
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Stable isotope and multi-analytical investigation of Monte da Cegonha: A Late Antiquity population in southern Portugal
... bone stable isotopic composition for palaeodietary re- ...Anthropological analysis revealed a cariogenic diet, rich in starchy food and carbohydrates, in at least in two individuals based on the frequency ...
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A comparison of dried shiitake mushroom in log cultivation and mycelial cultivation from different geographical origins using stable carbon and nitrogen isotope analysis
... By using the δ13C and δ15N values, 87.4 ％ of Japanese dried shiitake samples n ＝95 and 87.9 ％ of Chinese dried shiitake samples n ＝66 in log cultivation, 90.0 ％ of the Japanese dried shi[r] ...
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Organic matter dynamics and stable isotope signature as tracers of the sources of suspended sediment
... watersheds. Stable carbon (C) and nitrogen (N) isotopes and as well as the carbon to nitrogen atomic ratio (C/Na) have been found to be reliable tracers in recent studies (Onstad et ...2010). Stable ...
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From the ground up: global nitrous oxide sources are constrained by stable isotope values.
... tropospheric air (assumed to be equal to 6.72‰ for δ 15 N and 44.62‰ for δ 18 O [17]). This in- ternal standard gas was also submitted to UC Davis-SIF for isotopic analysis, and the standard deviation of 8 ...
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A universal carbonate ion effect on stable oxygen isotope ratios in unicellular planktonic calcifying organisms
... for 48 h, and stored at room temperature. After the last centrifugation step, care was taken to remove as much of the seawater medium as possible in order to minimize contamination due to residual salts. Seawater samples ...
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