Table 1.
Summary of the diversity and abundance of AOA and AOB in eight WWTPs
| Sample | WWTP | City and country | Diversity | Abundance of AOB | |||||
|---|---|---|---|---|---|---|---|---|---|
| AOA | AOB | ||||||||
| amoA sequence | No. of OTUs | amoA sequence | No. of OTUs | 16S rRNA gene sequence | 16S rRNA gene percentage in total sequences | amoA gene (copies/ng DNA) | |||
| CN-NJ-SJ | Suojincun | Nanjing, China | 20 | 6 | 21 | 8 | 87 | 0.42% (20,955) | 34.5 |
| CN-QD-TD | Tuandao | Qingdao, China | ND | ND | 21 | 8 | 156 | 0.64% (24,437) | 0.538 |
| CN-HR-UN | Harbin | Harbin, China | 16 | 5 | 20 | 7 | 105 | 0.46% (22,593) | 2.81 |
| CN-BJ-JX | Jiuxianqiao | Beijing, China | ND | ND | 21 | 9 | ND | ND | 142 |
| CN-HR-UN | Tianshan | Shanghai, China | ND | ND | 20 | 12 | ND | ND | 5.55 |
| US-CO-CO | Columbia Regional | Columbia, USA | ND | ND | 20 | 12 | 0 | 0% (25,499) | 1.29 |
| SG-SG-UP | Ulu Pandan | Singapore | 20 | 10 | 20 | 5 | 81 | 0.34% (23,928) | 74.3 |
| CA-GP-GP | Guelph | Guelph, Canada | ND | ND | 21 | 3 | 66 | 0.29% (22,593) | 1.72 |
ND: No Data