... provides one tool for exploring these processes; inventories and carbon and nitrogen stable isotopes are useful indicators. This study conducted comprehensive field investigations from the upper reaches of the Yangtze River to the coastal waters to explore the distribution and spatial-temporal variation...

... International License (CC-BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. See http://creativecommons.org/licenses/by/4.0/ . Stable isotopes Methane emissions Oil and gas industry Aircraft measurements Romania...

...Caroline Jacques; Célia J. Sapart; François Fripiat; Gauthier Carnat; Jiayun Zhou; Bruno Delille; Thomas Röckmann; Carina van der Veen; Helge Niemann; Tim Haskell; Jean-Louis Tison We report on methane (CH 4 ) stable isotope (δ 13 C and δ 2 H) measurements from landfast sea ice collected near...

... branched isoprenoid (HBI) lipid biomarkers and stable isotope ratios (δ 13 C, δ 15 N) to better understand the relationship between the availability of carbon sources in spring on the seafloor and their assimilation and transfer within the benthic food web. Organic carbon from sea ice (sympagic carbon [SC...

... their experimental conditions may influence their 18 O-H 2 O-based CUE measurements and suggest the parameters that need further constraining to more accurately quantify growth and CUE. Microbial growth Carbon use efficiency Stable isotopes Soil microbes serve as key modulators of the global carbon...

... Minnesota, USA), 15 years after it ended operations in 1999. Groundwater nitrate concentration decreased from 55 mg/L (as nitrogen) in 2003 to less than 5 mg/L since 2007. Results from stable isotope analysis, with δ 15 N and δ 18 O in groundwater nitrate ranging up to +44 and +30‰, respectively, suggest...