Biogeosciences
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Articles | Volume 13, issue 4
Articles | Volume 13, issue 4
https://doi.org/10.5194/bg-13-1341-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/bg-13-1341-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 13, issue 4
Research article
 | 
02 Mar 2016
Research article |  | 02 Mar 2016

Isotopically enriched ammonium shows high nitrogen transformation in the pile top zone of dairy manure compost

Koki Maeda, Sakae Toyoda, Midori Yano, Shohei Hattori, Makoto Fukasawa, Keiichi Nakajima, and Naohiro Yoshida

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Short summary
Nitrogen isotope ratios (δ15N) of NH4+ in dairy manure compost piles were studied. The δ15N–NH4+ values in different pile zones (top, side and core) show that extremely high nitrogen conversion, nitrification–denitrification activity of the microbes and NH3 volatilization occurred in pile top zone, which has very high NH4+ concentrations and significantly high 15N (δ15N: 12.7–29.8 ‰) values.
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