Fig. 4

Lag plots of beta-diversity measures between sample pairs against the time elapsed between sample dates. Yellow lines are the linear least squares regression fits with 95% confidence bands and blue lines are the Loess locally weighted regression curves with 95% confidence bands. a Bray–Curtis distances between saliva samples from subject 7. b Sorensen distances between saliva samples from subject 7. c Sorensen distances between saliva samples from subject 1. d Sorensen distances between saliva samples from subject 10