Figure 2

Community dynamics in the nitrate-fed reactor.
FISH images of sludge samples fixed on Days 0 (a) and Day 259 (b) after hybridization with specific probes: Cy3 ARC872 for M. nitroreducens (red), Cy5 NC1162 for M. oxyfera (blue) and FITC AMX820 for anammox bacteria (green). (c) Microbial community composition determined by sequencing in the bioreactor on Day 259.