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.