Figure 3

Past demographic history based on (a) samples of cpDNA from Tamarix austromongolica; (b) samples of cpDNA from Tamarix chinensis; (c) ITS samples from T. austromongolica; and (d) ITS samples from T. chinensis estimated using extended Bayesian skyline plots. In each plot, the x-axis represents the time before present (Ma) and the y-axis represents the effective population size. The dashed and solid lines indicate the median and 95% highest posterior density intervals, respectively.