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- Title
Application of the isotope pairing technique in sediments where anammox, denitrification, and dissimilatory nitrate reduction to ammonium coexist.
- Authors
Song, G. D.; Liu, S. M.; Kuypers, M. M. M.; Lavik, G.
- Abstract
The 15N isotope pairing technique is widely used to quantify anammox, denitrification, and dissimilatory nitrate reduction to ammonium (DNRA) in sediments. However, the effects of DNRA on anammox and denitrification in slurry incubations and on genuine N2 production in intact core incubations have not been fully explored. We developed a mathematical model describing these effects of DNRA, and tested this model in field and computational studies. Our model calculations revealed that for slurry incubations the presence of DNRA tends to under -and overestimate the actual anammox and denitrification rates, respectively, when calculated according to Thamdrup and Dalsgaard (2002). We found this underestimate of anammox to be proportional to the 15
- Subjects
ISOTOPIC analysis; AMMONIUM in soils; COMPOSITION of sediments; DENITRIFICATION; NITRATES -- Reduction; OXIDATION of ammonium compounds; MOLE fraction
- Publication
Limnology & Oceanography, Methods, 2016, Vol 14, Issue 12, p801
- ISSN
1541-5856
- Publication type
Article
- DOI
10.1002/lom3.10127