carbon isotope
Top PDF carbon isotope:
The successional status of tropical rainforest tree species is associated with differences in leaf carbon isotope discrimination and functional traits
... INRA Nancy, UMR Écologie et Écophysiologie, 54280 Champenoux, France (Received 24 April 2006; accepted 30 June 2006) Abstract – We characterised the among species variability in leaf gas exchange and morphological traits ...
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Carbon isotope discrimination during litter decomposition can be explained by selective use of substrate with differing δ13C
... Investigate Carbon isotopE discrimination during decomposition” (ALICE) project funded by the European Union through the Marie Curie Actions for Transfert of Knowledge (Contract MTK–CT–2004– ...
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Carbon isotope discrimination and water stress in trembling aspen following variable retention harvesting
... We found a regional trend in carbon isotope ratios, with the δ 13 C in Calling Lake > Drayton Valley > Lac Duparquet, both before and after VRH (Figure 1). Increased mean annual pre- cipitation and ...
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Calibration of the carbon isotope composition (δ<sup>13</sup>C) of benthic foraminifera
... The carbon isotope composition ( δ 13 C) of seawater provides valuable insight on ocean circulation, air-sea exchange, the biological pump, and the global carbon cycle and is re flected by the δ 13 C ...
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Leaf senescence and carbon isotope discrimination in durum wheat(triticum durum desf.) under severe drought conditions
... senescence, carbon isotope discrimination and yield performance were examined in durum wheat (Triticum durum ...(NIA). Carbon isotope discrimination was analyzed in flag leaves at anthesis and ...
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Carbon isotope signature of CH4 and CO2 as a tool to unravel diagenetic pathways in lake sediments.
... rable, de l’Environnement et de la Lutte contre les Changements Climatiques is gratefully acknowledged. [ 1] Conrad, R., Claus, P., Chidthaisong, A., Lu, Y., Fernandez Scavino, A., Liu, Y., Angel, R., Galand, P. E., ...
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Geology, biostratigraphy and carbon isotope chemostratigraphy of the Palaeogene fossil-bearing Dakhla sections, southwestern Moroccan Sahara
... Review Carbon isotope values (‰ VPDB) of the Porto Rico and El Argoub sections, compared to δ13Ccurves around the Eocene-Oligocene transition in ODP Site 1218 (Erhardt et ...
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Multiple Early Eocene carbon isotope excursions associated with environmental changes in the Dieppe-Hampshire Basin (NW Europe)
... Résumé – Multiples excursions isotopiques du carbone de l’Eocène inférieur associées à des changements environnementaux dans le Bassin de Dieppe-Hampshire (Europe du NO). L ’Eocène inférieur fût le théâtre d’une série ...
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Paleoproductivity during the middle Miocene carbon isotope events: A data-model approach
... carbon isotope maxima (the so-called CM events) related to changes in marine export productivity? Here we use benthic foraminiferal accumulation rates from three sites in the Paci fic and Southern Oceans ...
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Genotypic Variability in Carbon Isotope Discrimination and Water Use Efficiency among Recombinant Inbred Lines of Sunflower (Helianthus annuus L.)
... heavier carbon isotope ( 13 C), during assimilation processes, because the process depends on the intercellular and atmospheric carbon dioxide partial pressure (Pi and ...
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Carbon isotope offsets between benthic foraminifer species of the genus Cibicides ( Cibicidoides ) in the glacial sub-Antarctic Atlantic
... organic carbon rain rates and bottom water oxygen concentrations (Figure 6) [McCorkle and Emerson, 1988; McCorkle et ...ion-dependent carbon isotope effect on benthic foraminifera remains to be ...
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Carbon Isotope Discrimination as a tool of durum wheat selection and its stability value in eastern High Plateau of Algeria
... Sétif 19000 hafsimiloud@yahoo.com Introduction The last study in north eastern Algeria on the potential use of carbon isotope discrimination (CID) in wheat selection conducted between 2003-2008 in ...
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Genetic Control of Water Use Efficiency and Leaf Carbon Isotope Discrimination in Sunflower (Helianthus annuus L.) Subjected to Two Drought Scenarios
... Abstract High water use efficiency (WUE) can be achieved by coordination of biomass accumulation and water consumption. WUE is physiologically and genetically linked to carbon isotope discrimination (CID) ...
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![Carbon isotope labeling of carbamates by late-stage [$^{11}C$], [$^{13}C$] and [$^{14}C$] carbon dioxide incorporation](https://data07.123doks.com/thumbv2/123doknet/000/407/407890/cover.webp)
Carbon isotope labeling of carbamates by late-stage [$^{11}C$], [$^{13}C$] and [$^{14}C$] carbon dioxide incorporation
... C]carbon isotope labeling of cyclic carbamates is ...of carbon dioxide, the primary source of carbon-14 and carbon-11 radioisotopes, in a direct, cost-effective and sustainable ...
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Dynamic Carbon Isotope Exchange of Pharmaceuticals with Labeled CO$_2$
... Figure 4: Cu-catalyzed carbon-14 labeling of pharmaceutical relevant molecules. (A) Reaction conditions as follows: 20 mol% catalyst and ligand loading, see supporting information for de- tailed experimental ...
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The Emergence of Carbon Isotope Exchange
... clearly show the advantages of these CIE methods over traditional multi-step approaches. In summary, we have highlighted the emerging concept of carbon isotope exchange, which will pave the way to an ...
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A Photochemical Strategy for Carbon Isotope Exchange with CO 2
... (12) (a) Kingston, C.; Wallace, M. A.; Allentoff, A. J.; deGruyter, J. N.; Chen, J. S.; Gong, S. X.; Bonacorsi, Jr., S.; Baran., P., S.; Direct carbon isotope exchange through decarboxylative ...
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Transition‐Metal‐Free Carbon Isotope Exchange of Phenyl Acetic Acids
... Recent breakthroughs in late-stage 14 C labeling have challenged this traditional approach and showcased direct access to complex scaffolds from [ 14 C]CO 2 . 10 In addition, the first examples of ...
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Carbon isotope ratios suggest no additional methane from boreal wetlands during the rapid Greenland Interstadial 21.2
... and are able to calculate the 𝛿 13 C of the additional CH 4 source in ice core samples. 2.5.3. The Isotopic Fractionation of the Total CH 4 Sink in Keeling Plot Analysis Literature values of 𝜀 tot vary from −7.7‰ [Lassey ...
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Primary production in coastal lagoons supported by groundwater discharge and porewater fluxes inferred from nitrogen and carbon isotope signatures
... of carbon could also affect this ...inorganic carbon uptake are around 12‰ and 20‰ for macrophytes and phytoplankton, respectively (LaZerte and Szalados 1982; Chanton and Lewis ...to carbon ...
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