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- W2529122207 abstract "Natural abundance nitrogen and oxygen isotopes of nitrate (δ15NNO3 and δ18ONO3) provide an important tool for evaluating sources and transformations of natural and contaminant nitrate (NO3-) in the environment. Nevertheless, conventional interpretations of NO3- isotope distributions appear at odds with patterns emerging from studies of nitrifying and denitrifying bacterial cultures. To resolve this conundrum, we present results from a numerical model of NO3- isotope dynamics, demonstrating that deviations in δ18ONO3 vs. δ15NNO3 from a trajectory of 1 expected for denitrification are explained by isotopic over-printing from coincident NO3- production by nitrification and/or anammox. The analysis highlights two driving parameters: (i) the δ18O of ambient water and (ii) the relative flux of NO3- production under net denitrifying conditions, whether catalyzed aerobically or anaerobically. In agreement with existing analyses, dual isotopic trajectories >1, characteristic of marine denitrifying systems, arise predominantly under elevated rates of NO2- reoxidation relative to NO3- reduction (>50%) and in association with the elevated δ18O of seawater. This result specifically implicates aerobic nitrification as the dominant NO3- producing term in marine denitrifying systems, as stoichiometric constraints indicate anammox-based NO3- production cannot account for trajectories >1. In contrast, trajectories <1 comprise the majority of model solutions, with those representative of aquifer conditions requiring lower NO2- reoxidation fluxes (<15%) and the influence of the lower δ18O of freshwater. Accordingly, we suggest that widely observed δ18ONO3 vs. δ15NNO3 trends in freshwater systems (<1) must result from concurrent NO3- production by anammox in anoxic aquifers, a process that has been largely overlooked." @default.
- W2529122207 created "2016-10-14" @default.
- W2529122207 creator A5029779082 @default.
- W2529122207 creator A5083320398 @default.
- W2529122207 date "2016-10-04" @default.
- W2529122207 modified "2023-10-17" @default.
- W2529122207 title "Isotopic overprinting of nitrification on denitrification as a ubiquitous and unifying feature of environmental nitrogen cycling" @default.
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- W2529122207 cites W1596314088 @default.
- W2529122207 cites W1950010039 @default.
- W2529122207 cites W1969221554 @default.
- W2529122207 cites W1969799349 @default.
- W2529122207 cites W1970188770 @default.
- W2529122207 cites W1980840462 @default.
- W2529122207 cites W1986962259 @default.
- W2529122207 cites W1993515769 @default.
- W2529122207 cites W1996013862 @default.
- W2529122207 cites W1999634012 @default.
- W2529122207 cites W2000522044 @default.
- W2529122207 cites W2002418394 @default.
- W2529122207 cites W2006786201 @default.
- W2529122207 cites W2008714427 @default.
- W2529122207 cites W2015154377 @default.
- W2529122207 cites W2015694353 @default.
- W2529122207 cites W2018004287 @default.
- W2529122207 cites W2018012458 @default.
- W2529122207 cites W2018262615 @default.
- W2529122207 cites W2018459257 @default.
- W2529122207 cites W2019992961 @default.
- W2529122207 cites W2025254507 @default.
- W2529122207 cites W2032292978 @default.
- W2529122207 cites W2037707059 @default.
- W2529122207 cites W2048206714 @default.
- W2529122207 cites W2048342577 @default.
- W2529122207 cites W2051634510 @default.
- W2529122207 cites W2054864819 @default.
- W2529122207 cites W2065169343 @default.
- W2529122207 cites W2067303316 @default.
- W2529122207 cites W2067790594 @default.
- W2529122207 cites W2068312108 @default.
- W2529122207 cites W2069920999 @default.
- W2529122207 cites W2072421389 @default.
- W2529122207 cites W2075406903 @default.
- W2529122207 cites W2079054993 @default.
- W2529122207 cites W2080843162 @default.
- W2529122207 cites W2082097456 @default.
- W2529122207 cites W2082937688 @default.
- W2529122207 cites W2085118846 @default.
- W2529122207 cites W2086308791 @default.
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- W2529122207 cites W2103821339 @default.
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- W2529122207 cites W2114793789 @default.
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- W2529122207 cites W2139477006 @default.
- W2529122207 cites W2140103670 @default.
- W2529122207 cites W2142310595 @default.
- W2529122207 cites W2143736675 @default.
- W2529122207 cites W2151552394 @default.
- W2529122207 cites W2153247902 @default.
- W2529122207 cites W2160526143 @default.
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- W2529122207 doi "https://doi.org/10.1073/pnas.1601383113" @default.
- W2529122207 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/5081596" @default.
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- W2529122207 hasPublicationYear "2016" @default.
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