Figure 1.
(a) Seasonal multidimensional scaling diagram of river samples, produced with Bray–curtis similarity values for communities that only included river-specific OTUs (Stress=0.11). Samples separated into two significantly different communities, early (April–July) and late (August–November) (ANOSIM, P<0.001). (b) Taxonomy of the two seasonal groups. (c, d) Spatial distribution of a top indicator for early (IV: 0.74) and late (IV: 0.94), by average relative abundance, across the ordination of the river MDS (IV=Indicator value).
