extremely significantp ≤ 0.01
At the phylum level, significant interannual differences were observed: Campilobacterota showed extremely significant differences among the 3 years (0.001 < p ≤ 0.01), while 9 other phyla (including: Firmicutes, Proteobacteria, Chloroflexi) exhibited super-significant differences ( p ≤ 0.001) ( Figure 2A ).