Table 3. Parameter estimates for Thuja plicata andTsuga heterophylla for the model selected more often for the
data, “AV + sc + bot/exp”. The population sizes, N inland and N coast,
are in units of the number of alleles in the population. All of the
events, Tdiv, Tbot andTexp , are in units of coalescent generations. The
magnitude of the bottleneck, btnmag, indicates the instantaneous
shrinkage of the population by that proportion. The growth rates
indicate population size change, backward in time, as the number of
alleles removed from the population per generation. Thus, a negative
rate indicates population expansion forward in time. The migration rates
indicate the proportion of alleles moving to the other population per
generation. The mutation rate is in substitutions per site per
generation.