Diversity and abundance (mean ± standard deviation) of sediment nitrifying communities among site types in lakesa.
| Mesotrophic sites (N = 6) | Eutrophic sites (N = 21) | Hypertrophic sites (N = 8) | |
|---|---|---|---|
| Chao1 index | |||
| AOA | 11.40 ± 8.53 | 10.94 ± 9.29 | 5.63 ± 2.49 |
| AOB | 27.33 ± 12.89a | 14.82 ± 9.72b | 27.38 ± 18.76a |
| Shannon index | |||
| AOA | 1.14 ± 1.00 | 1.36 ± 0.53 | 0.87 ± 0.50 |
| AOB | 2.02 ± 0.67a | 1.10 ± 0.50b | 1.98 ± 0.56a |
| Simpson index | |||
| AOA | 0.53 ± 0.37 | 0.35 ± 0.19 | 0.56 ± 0.26 |
| AOB | 0.25 ± 0.22b | 0.51 ± 0.19a | 0.21 ± 0.15b |
| Abundance | |||
| AOA | 1.73 ± 1.33 | 1.33 ± 1.20 | 53.96 ± 115.68 |
| AOB | 1.33 ± 1.10b | 0.56 ± 0.28b | 3.50 ± 3.30a |
| Abundance ratio | |||
| AOA/AOB | 2.12 ± 1.75 | 2.81 ± 3.49 | 7.64 ± 11.07 |
a
Mean ± standard deviation followed by different lowercase letters indicates significant difference (P < 0.05) among site types.