Figure 3: Elements of community structure suggests subgingival communities conform to a nested subset gradient with clumped species loss.

a) coherence was less than the simulated mean for both subjects (p < 0.001). b) turnover was less than the simulated mean for both subjects (p < 0.001), and c) boundary clumping exceeded 1 for both subjects. Taken together, these data suggest that the gradient fits a nested subset with clumped species loss.