Table 1.

Inferred Demographic Parameters of the Best-Fitting Demographic Model Shown in figure 2A.

Parameters	Point estimation	95% CIa
		Lower bound	Upper bound
Ne-ANC	56,235	48,012	69,492
Ne-P.tremula	102,814	93,688	105,671
Ne-P.tremuloides	309,500	247,321	310,105
mP.tremuloides->P.tremula	6.53 × 10−7	6.31 × 10−7	1.21 × 10−6
mP.tremula->P.tremuloides	5.14 × 10−7	5.56 × 10−7	1.11 × 10−6
TDIV	2,332,410	218,6760	3,113,520

Note.—Parameters are defined in figure 2A. N_e-P.tremula, N_{e-P.tremuloides}, N_e-ANC indicate the effective population sizes of P. tremula, P. tremuloides and their ancestral population respectively, m_{P.tremuloides->P.tremula} indicates the per generation migration rate from P. tremuloides to P. tremula, m_{P.tremula->P.tremuloides} indicates the per generation migration rate from P. tremula to P. tremuloides, T_DIV indicates the estimated divergence time between the two species obtained from fastsimcoal2.

^aParametric bootstrap estimates obtained by parameter estimation from 100 datasets simulated according to the overall maximum composite likelihood estimates shown in point estimation columns. Estimations were obtained from 100,000 simulations per likelihood.