Fig. 4From: The impact of DO and salinity on microbial community in poly(butylene succinate) denitrification reactors for recirculating aquaculture system wastewater treatmentAbsolute abundance of nosZ and 16 s rRNA cells of all samples using quantitative real-time PCR. Values (mean ± SD) in the same color column with different letters are significantly different (P < 0.05)Back to article page