a decreasing trendp = .016
Seasonally specified data showed a decreasing trend in NTI, that is more phylogenetically clustered communities towards autumn, for both early and mature biofilm ( F 2,20 = 5.12, p = .016; F 2,20 = 12.68, p < .001, respectively) and stronger phylogenetic clustering for bacterioplankton around midsummer than towards autumn ( F 2,20 = 5.75, p = .011), especially at downstream sites (Figure S5 ). 3.3.5.