Table 4.
Relative abundance (%) of predominant taxa for AOB and AOA at the order level across all the treatments.
| Taxa | Treatment | |||||
|---|---|---|---|---|---|---|
| CK | N | NB1 | NB2 | NB3 | ||
| AOB | Nitrosomonadales | 95.44 ± 1.33 a | 81.59 ± 0.82 ab | 73.26 ± 9.68 bc | 63.08 ± 16.96 c | 58.87 ± 3.45 c |
| Unclassified_k_norank_d_Bacteria | 1.07 ± 1.04 c | 16.35 ± 0.87 b | 23.27 ± 8.83 ab | 30.94 ± 11.51 a | 31.10 ± 3.16 a | |
| Norank_p_ammonia_oxidising_bacteria_ensemble | 3.32 ± 1.92 b | 1.42 ± 0.31 c | 2.97 ± 0.52 b | 5.40 ± 2.39 ab | 9.90 ± 1.62 a | |
| AOA | Nitrososphaerales | 37.95 ± 1.47 b | 43.15 ± 10.45 b | 58.76 ± 11.75 a | 60.23 ± 7.82 a | 51.02 ± 4.17 ab |
| Nitrosopumilales | - | 29.37 ± 6.56 a | 26.79 ± 14.00 ab | 14.41 ± 11.43 ab | 12.90 ± 6.85 b | |
| Norank_c_environmental_samples_p_Crenarchaeota | 57.63 ± 1.00 a | 12.10 ± 3.16 b | 2.45 ± 0.80 d | 3.85 ± 1.65 d | 7.84 ± 1.54 c | |
| Unclassified_k_norank_d_Archaea | 4.24 ± 0.55 c | 14.39 ± 2.05 b | 11.78 ± 1.67 bc | 20.87 ± 11.30 ab | 27.65 ± 6.20 a | |
Different letters indicate significant differences among different treatments for each taxonomic order based on least significant difference (p ≤ 0.05).