Fig. 8 | Scientific Reports

Fig. 8

From: Biofilm detachment significantly affects biological stability of drinking water during intermittent water supply in a pilot scale water distribution system

Fig. 8

Pairwise comparisons of relative abundance of ammonia oxidizing (AOB, red) and nitrite oxidizing bacteria (NOB, green) in three groups of biofilm samples (equivalent to 10 cm2 of pipe surface) obtained before and after the start of the 100-day study period. The average relative abundance of AOB or NOB for these three groups ranged from 0.1–4%. The analysis relies on data that underwent a natural logarithm transformation prior to conducting beta regression. The significance test is derived using the estimated marginal means after beta regression analysis with a log link function. The p-values were adjusted using the Benjamini–Hochberg method to account for multiple comparisons. The symbols ** and **** indicate statistical significance, representing p ≤ 0.01 and p ≤ 0.0001, respectively.

Back to article page