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Articles | Volume 16, issue 24
Articles | Volume 16, issue 24
https://doi.org/10.5194/bg-16-4765-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-16-4765-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 16, issue 24
Research article
 | 
16 Dec 2019
Research article |  | 16 Dec 2019

Major role of ammonia-oxidizing bacteria in N2O production in the Pearl River estuary

Li Ma, Hua Lin, Xiabing Xie, Minhan Dai, and Yao Zhang

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Short summary
The major microbial process producing N2O in estuarine ecosystems remains controversial. Combining the concentrations and isotopic compositions of N2O, distributions and transcript levels of ammonia-oxidizing bacterial and archaeal amoA and denitrifier nirS genes, and in situ incubation estimates of nitrification rates and N2O production rates, we clarified that ammonia-oxidizing bacteria contributed the major part in N2O production in the upper Pearl River estuary despite their low abundance.
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