Fish and Shellfish Aquaculture Impact on the Sediment Bacterial Communities in Xiangshan Bay, China

Table 1

Proportions of functional genes involved in nitrate reduction between different sampling sites.

Sampling site types	Fi	Fc	Oy	Oc
Aerobic ammonia oxidation (%)	3.07 ± 1.60	2.49 ± 1.02	2.71 ± 0.75	3.53 ± 1.78
Aerobic nitrite oxidation (%)	2.60 ± 1.76	2.49 ± 1.29	2.83 ± 1.01	3.19 ± 1.91
Nitrification (%)	5.68 ± 3.09	4.98 ± 1.78	5.54 ± 1.70	6.72 ± 3.16
Nitrate respiration (%)	0.40 ± 0.44	0.12 ± 0.12	0.22 ± 0.17^b	0.05 ± 0.07^b
Nitrate reduction (%)	0.92 ± 0.48^a	0.30 ± 0.21^a	0.77 ± 0.49	0.45 ± 0.32

Fi, fish cage culture area; Fc, fish control area; Oy, oyster control area; Oc, oyster control area. Samples labeled with the same letter are significantly different at 0.05 level.