Fig. 9

Environmental variables plotted as vectors in the PCO ordination based on the Bray–Curtis similarity calculated by taxa-stations matrix. Vectors are calculated according to the Spearman’s correlation coefficient (rs > 0.5) (for details on correlations between variables see Table S7). Environmental variables are coded as: bottom temperature (T bot), Salinity (Sal), dissolved oxygen (Diss. O2), pH, dissolved phosphates (PO4), dissolved ammonium (NH4), dissolved nitrates (NO3), and net primary production (NPP)