Ecological aspects of carbon and nitrogen isotope ratios of cyanobacteria
نویسندگان
چکیده
منابع مشابه
Ecological Interpretation of Leaf Carbon Isotope Ratios: Influence of Respired Carbon Dioxide
In a Neotropical moist forest at Barro Colorado Island, Panama, 6'3C values of CO2 in air and (13C values of leaf tissue exhibit parallel patterns of variation between the forest floor and the canopy. During the daytime, 613C values of CO2 from air sampled at 1 m and 0.5 m were significantly less than that at 25 m. Based on mass balance equations, up to 18% of the CO2 in air at 0.5 m above the ...
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boron nitride semiconducting zigzag swcnt, $b_{cb}$$n_{cn}$$c_{1-cb-cn}$, as a potential candidate for making nanoelectronic devices was examined. in contrast to the previous dft calculations, wherein just one boron and nitrogen doping configuration have been considered, here for the average over all possible configurations, density of states (dos) was calculated in terms of boron and nitrogen ...
15 صفحه اولStable isotope ratios of marijuana. I. Carbon and nitrogen stable isotopes describe growth conditions.
There remains significant uncertainty in illicit marijuana cultivation. We analyzed the delta(13)C and delta(15)N of 508 domestic samples from known U.S.A. counties, 31 seized from a single location, 5 samples grown in Mexico and Colombia, and 10 northwest border seizures. For a subset, inflorescences and leaves were analyzed separately. These data revealed a strong correspondence, with inflore...
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We report the measurement of the natural isotope ratios of nitrogen and carbon in subcellular volumes of individual cells among a population of cultured cells using a multi-isotope imaging mass spectrometer (MIMS), [MIMS is the prototype of the NanoSIMS 50, Cameca, France.] We also measured the nitrogen and carbon isotope ratio in cells after they had been cultured in media enriched with the am...
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Use of stable isotope ratios to trace pathways of organic matter among consumers requires knowledge of the isotopic shift between diet and consumer. Variation in trophic shift among consumers can be substantial. For data from the published literature and supplementary original data (excluding fluid-feeding consumers), the mean isotopic shift for C was +0.5 0.13‰ rather than 0.0‰, as commonly as...
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ژورنال
عنوان ژورنال: Plankton and Benthos Research
سال: 2012
ISSN: 1880-8247,1882-627X
DOI: 10.3800/pbr.7.135