Figure 6
Constrained classifications by distance-based Redundancy Analysis (db-RDA) ordination diagram of the holoplanktonic polychaete species in Southern Adriatic Sea. Blue arrows indicate significant explanatory variables (longitude, depth and chlorophyll a). The samples are labeled according to their water-mass cluster membership. The 8 species belonging to the three most abundant genera (90%) are shown: Tomopteridae (red), Alciopidae (green), Typhloscolecidae (blue). Tom.lig: Tomopteris ligulata; Tom.sp: Tomopteris sp.; Tom.pla: Tomopteris planktonis; Tom.pac: Tomopteris pacifica; Kro.lep: Krohnia lepidota; Van.for: Vanadis formosa; Van.cri: Vanadis crystallina; Sag.kov.: Sagitella kovalewskii.
