Table 4.

Mean number of alleles, mean gene diversity and mean isolation by distance (IBD) slope observed in analyzed data sets of 200 individuals for each parameter combination. The mean IBD slope was calculated using replicate data sets from the pre-barrier stage (generation 0). Standard deviations for all values are indicated in brackets. Mutation rates are given by μ and average dispersal distances by δ. In parentheses, the percentage of individual tests for each parameter combination that gave significant slopes at the α = 0.05 level is shown.

Parameter combination	Mean Number of alleles*	Mean gene diversity (H)*	Mean IBD Slope†
μ = 0.0001 − δ = 1	24.9 [0.59]	0.86 [0.0088]	0.265 [0.02] (100%)
μ = 0.000025 − δ = 1	9.5 [0.68]	0.62 [0.0073]	0.202 [0.03] (100%)
μ = 0.0001 − δ = 11	17.8 [1.28]	0.79 [0.0182]	0.004 [0.003] (12%)
μ = 0.000025 - δ = 11	6.32 [0.36]	0.49 [0.0098]	0.002 [0.002] (24%)

^*Calculated over generation time and over repetitions.

^†Calculated only for generation time 0 over repetitions.