Figure 4 Non-metric multidimensional scaling (NMDS) ordination of the whole aquatic biota (including the four faunal group) at twenty-five sites in three seasons. Data for the four faunal groups were combined after standardization. Seventy-five assemblage data were combined for the analysis, shown as points in figure (a) –(c). Data from each season were coloured according to the connectivity category. Each polygon represents a convex hull created by connecting the outermost site scores for each of the four connectivity categories in each season. Different alphabet letters next to the polygons indicate significant differences among groups (p < 0.05; pairwise multilevel comparisons, p-values were corrected with Bonferroni-method). (d) shows species plots of the NMDS. Plots are coloured based on their faunal groups. Full taxonomic names of the abbreviations are in Table S5. (e) Mean Square of variations between connectivity categories and residuals in each season.