Figure 4

Bray–Curtis dissimilarity between segments in both seasons. The same letters on the boxes were not significantly different between seasons and segments (one-way ANOVA and Tukey test, p < 0.05). The bold line in the box indicates the median value and upper and lower limits of the box, and the whiskers indicate the first and third quartiles and ± 1.5 × interquartile range. The point-on-box plot indicates each data point. UD upstream of dam, DD downstream of dam, TR in the tributary.