Nitrogen Isotopes in the Ocean - Encyclopedia of Ocean SciencesELSEVIEREncyclopedia of Ocean Sciences
This article outlines the isotope systematics of the major processes in the ocean nitrogen (N) cycle, their impact on the isotopic compositions of the major N reservoirs in the ocean, and how the N isotopes in the modern ocean and sedimentary record may record current N fluxes and past change...
The δ15N of nitrate in the Southern Ocean: consumption of nitrate in surface waters.Global Biogeochem. Cy. 13, 1149–1166 (1999). Article Google Scholar Sigman, D. M. et al. The dual isotopes of deep nitrate as a constraint on the cycle and budget of oceanic fixed nitrogen. Deep ...
Chapter 29-Nitrogen Stable Isotopes in Marine Environments Pages 1277-1302 Purchase View chapter Select Chapter 30 - Molecular Approaches to the Nitrogen Cycle Book chapterAbstract only Chapter 30-Molecular Approaches to the Nitrogen Cycle Pages 1303-1344 ...
To investigate the redox state of the Marinaon ocean, we utilised N-isotopes, Fe-speciation, and redox-sensitive trace elements (TE). The modern marine N cycles serves as a benchmark for interpretation of sedimentary rocks10. Currently, dissolved atmospheric N2 is fixed to bioavailable N by si...
Crop production is the single largest cause of human alteration of the global nitrogen cycle. We present a comprehensive assessment of global nitrogen flow... Moffat,AS - 《Science》 被引量: 253发表: 1998年 Simulating the global distribution of nitrogen isotopes in the ocean [1] We present a...
Nitrogen has two stable isotopes,14N and15N, comprising, respectively, 99.64 % and 0.36 % of the nitrogen atoms on earth. The isotopes are fractionated one from the other in a wide variety of biochemical processes in the sea (see Sigman et al.,2009, for a comprehensive review). Measurement...
In this study, we present the first estimates of nitrogen cycling in a coupled 3D ocean-biogeochemistry-isotope model forced with realistic boundary conditions from the Last Glacial Maximum (LGM) ~21,000 years before present constrained by nitrogen isotopes. The model predicts a large decrease in ...
Earth’s marine nitrogen cycle has co-evolved with life and redox conditions over geological time. In this Review, we provide an account of nitrogen cycling in the world’s oceans over the past ~4 Ga, from the dawn of life to the modern day. Stable nitrogen isotopes from sedimentary roc...
- Ocean. 118 (10), 4781-4794. http://dx.doi.org/10.1002/ Jgrc.20316.Rafter PA, DiFiore PJ, Sigman DM. 2013 Coupled nitrate nitrogen and oxygen isotopes and organic matter remineralization in the Southern and Pacific Oceans. J. Geophys. Res. Oceans 118, 4781-4794. (doi:10.1002/j...