Stable isotope
Multivariate analysis of stable isotope data in the traceability process for birds=Análise multivariada em dados de isótopos estáveis no processo de rastreabilidade em aves
... multi-element isotope and trace element ...using stable isotope. In: LAJTHA, K.; MICHENER, R. H. (Ed.). Stable in Ecology and Environmental ...
6
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 ...
10
Opportunistic feeding strategy for the earliest old world hypsodont equids: evidence from stable isotope and dental wear proxies.
... carbon stable isotope analyses on four populations of hipparionines in Europe, amongst the earliest in the Old World, support mixed feeding habits for ...
14
A porewater – based stable isotope approach for the investigation of subsurface hydrological processes
... Altitude effects could be negleted in the study because of a limited elevation range of the hillslope. Therefore, one can expect a spatially uniform stable isotope precip- itation signal along the whole ...
24
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 ...
12
Biogeochemistry of a large and deep tropical lake (Lake Kivu, East Africa: insights from a stable isotope study covering an annual cycle
... and stable isotope compositions of dissolved inorganic carbon (DIC), dissolved and particulate organic carbon (DOC and POC), particulate nitrogen (PN), and ...their stable isotope composition ...
11
Trophic ecology of Atlantic Bluefin Tuna (Thunnus thynnus) [corrected] larvae from the Gulf of Mexico and NW Mediterranean spawning grounds: A Comparative Stable Isotope Study.
... the stable isotope signatures, the main difference observed was the low δ 15 N of the micro- and mesozooplankton in the W-GOM, which resulted inlowδ 15 N values of BFT larvae in this ...
22
Plant SILAC: stable-isotope labelling with amino acids of arabidopsis seedlings for quantitative proteomics.
... The major problem with the application of SILAC to plants has been limited incorporation of stable-isotope-containing amino acids, thought to be due to plants being autotrophic. Indeed, successful SILAC in ...
8
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 15 N) ...
23
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 by ...
6
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 replicates (at ...
19
An analytical system for stable isotope analysis on carbon monoxide using continuous-flow isotope-ratio mass spectrometry
... position is determined with an isotope-ratio mass spectrom- eter (IRMS) technique. The entire system is continuously flushed with high-purity helium (He), the carrier gas. The blank signal of the Schütze reagent ...
10
Novel Phenanthrene-Degrading Bacteria Identified by DNA-Stable Isotope Probing.
... attracted much attention. A successful bioremediation strategy involves either encouraging the native microbial community to rapidly degrade the pollutants, or the addition of more-effective degradative microbes, in the ...
14
Trophic ecology of Arapaima in Guyana: giant omnivores in Neotropical floodplains
... sometimes characterized as ‘predators’ (e.g., Forsberg et al., 1993) or ‘top predators’ in food webs, but some diet studies in Brazil (Queiroz, 2000; de Oliveira et al., 2005) suggest that the characterization of ...
9
Background and the use of isoscapes in the Brazilian context : essential tool for isotope data interpretation and natural resource management
... of stable isotope ratios have been represented in spatial models, called isoscapes (isoscapes = isotopic + landscapes), which allow visualization and help both data interpretation and decision making when ...
27
Braz. J. Geol. vol.46 número3
... Figure 15 depicts the C, O, and S stable isotope composi- tion. he C and O data were obtained from carbonates, using a Delta V Plus gas source mass spectrometer at the Geochronoly Lab, University of ...
26
Water quality, isoscapes and stoichioscapes of seagrasses indicate general P limitation and unique N cycling in shallow water benthos of Bermuda
... in stable isotope ratios (isoscapes) and elemental ratios (stoichioscapes) of seagrass leaves and the water column nutrients indicate general P- limitation of both water column and benthic primary produc- ...
15
Resumo: O nicho trófico dos predadores simpátricos Pontoporia blainvillei (golfinho franciscana) e Trichiurus
... The area of study is the northern Rio de Janeiro State (21°30’S-22°15’S) (Figure 1). Dolphin specimens were incidentally captured through commercial gillnet fisheries while fish specimens were the target of these ...
5
Massive consumption of gelatinous plankton by Mediterranean apex predators.
... Mediterranean. Stable isotope ratios from different regions and years with contrasting abundance of gelatinous zooplankton will be extremely useful as confirmatory ...
14
Method for determination of stable carbon isotope ratio of methylnitrophenols in atmospheric particulate matter
... carbon isotope ratio of 2-methyl-4-nitrophenol in samples collected at York University is in the relatively narrow range of ...toluene stable isotope ratios measured close to major sources (Rudolph ...
12