Assignment tests conducted in GeneClass v. 2.0.

Detection of first generation migrants was done using an exclusion threshold approach where an individual was excluded from their corresponding sampling site when the probability of exclusion was >95%. Individuals that were excluded were assigned to another population when the probability of assignment was above a more conservative threshold of >0.10. Individuals that could not be re-assigned to any of the sampled populations with a p value >0.10 were considered to have originated from a non-sampled location. Numbers in brackets in column 1 are the total sample sizes for each population.