Fig. 3
From: Increased prokaryotic diversity in the Red Sea deep scattering layer
Sample distribution according to Principal Coordinates Analysis constructed on a Bray–Curtis dissimilarity matrix for SURF, DCM and DSL layers. The PERMANOVA test detected seasonal differences (p < 0.05) in all 3 layers considered and the pairwise comparisons between seasons are shown with adjusted p-values. On the bottom left, the percentage of variance explained by the first two axes is shown. Significant correlations between the axes and biotic or abiotic variables are shown A Surface (PCoA1 vs PAb r =  + 0.71; PCoA2 vs Temp r = −0.71), B Deep Chlorophyll Maximum (PCoA1 vs Temp r = −0.59; PCoA1 vs %HNA r = −0.53; PCoA2 vs NO32− r =  + 0.76; PCoA2 vs DOC r =  + 0.55) and C Deep scattering layer (PCoA1 vs PVol r =  + 0.71; PCoA1 vs %HNA r =  + 0.65; PCoA1 vs NO32− r = −0.93; PCoA2 vs PAb r = −0.69)