FIGURE 5 The maximum clade credibility tree of 49 haplotypes
identified in Cymbidium faberi . Values above the main branches
represent posterior probabilities, and 95% highest posterior density
intervals are represented in brackets
Based on the estimations of divergence time, we generate the Extended
Bayesian Skyline Plot, which revealed that the estimates of effective
population size of C. faberi were under demographic equilibrium
in the past but an apparent decline in population size going from
approximately 1 Ma (Figure 6). Our data suggested that disturbance due
to human activity may have contributed to the gradually reduced
effective population size.