<p>Top 10 most abundant bacteria at Genus level in biofilms within different sampling period from different sample sources.</p>

Genera that were not in the top 10 were aggregated as ‘Other’. (A) Continuous sampling periods with month range of 0–3, 3–8, 8–11, 11–13. (B) Cumulative sampling periods with month range of 0–3, 0–8, 0–11, 0–13. The relative abundance data at 0–3 from (A) and (B) were repeated. (ZIP)