Figure 2. Principal Component Ordination (PCO) of seaweed community structure from bioregions swept by the Leeuwin Current (LC = green triangles) and the East Australia Current (EAC = blue triangles).

See Figure 1 for spatial arrangement of regions. The green and blue arrows indicate the current systems super-imposed onto the ordination to illustrate the magnitude of floristic change across the current system (length of arrow) and the variation in community structure among regions within the system (width of arrow). There was significant sequential change in community structure along both current systems.