ORIGINAL RESEARCH
The Abundance and Community Composition
of Ammonia-Oxidizing Prokaryotes
in Small-Reservoir Sediments in China’s
Huashan Watershed
Dayong Zhao1,2, Rui Huang1,2, Jin Zeng3, Juan Luo1,2, Feng Shen1,2, Cuiling Jiang2,
Feng Huang2, Zhongbo Yu1,2, Qinglong L. Wu3
1State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University,
Nanjing 210098, China
2College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China
3State Key Laboratory of Lake Science and the Environment, Nanjing Institute of Geography and Limnology,
Chinese Academy of Sciences, Nanjing 210008, China
Nanjing 210098, China
2College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China
3State Key Laboratory of Lake Science and the Environment, Nanjing Institute of Geography and Limnology,
Chinese Academy of Sciences, Nanjing 210008, China
Submission date: 2016-03-30
Final revision date: 2016-06-20
Acceptance date: 2016-06-20
Publication date: 2016-11-24
Pol. J. Environ. Stud. 2016;25(6):2665–2673
KEYWORDS
TOPICS
ABSTRACT
We investigated the effects of nutrient levels on the abundance and diversity of ammonia-oxidizing
archaea (AOA) and ammonia-oxidizing bacteria (AOB), seven surface sediment samples from small
reservoirs at different nutrient levels were collected from the eastern, central, and western parts of Huashan
watershed in Chuzhou, Anhui Province to determine the abundance and community composition of AOA
and AOB. The results showed that the abundance of bacterial amoA gene (1.85×107 to 2.86×108 g/dry
sediment) was higher than that of archaeal amoA gene (1.25×105 to 1.23×106 g/dry sediment) in all sediment
samples. The abundance of the archaeal amoA gene exhibited significant positive correlations with total
nitrogen concentrations, whereas the abundance of bacterial amoA gene showed significantly negative
correlation with pH. Archaeal amoA gene sequences included Nitrososphaera and Nitrosopumilus clusters
and the majority of Nitrosospira and Nitrosomonas oligotropha lineages.
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