Results of the ABC analysis. Priors are plotted as a dashed black line A) time of population expansion: τg SH in red and τg BHA1 in green, B) time of founding in U.S. τf SH in red and τf BHA1 in green, C) ηSH/η
in red, ηBHA1/η
in green. Contour plots of the approximate likelihood for current weedy population size as a function of bottleneck intensity, which is the percent decline in population size during the bottleneck, D) SH, and E) BHA1.