Figure 3: nMDS ordinations.

First two nMDS dimensions of the (a) advection (2D stress=0.19), (b) environmental (2D stress=0.02) and (c) taxonomic (2D stress=0.08) distance/dissimilarity matrices. AAIW, light blue stars; SAMW, orange crosses; AABW, dark blue squares; AZ, green circles; PFZ, yellow triangles; CDW, red diamonds.