Table 2.
Summary statistics for the top-ranked NMLPE models evaluating the effect of isolation-by-distance (IBD), isolation-by-environment (IBE) and isolation-by-resistance (IBR) on the genetic differentiation among Iberian Arabidopsis thaliana populations
| Cluster | Predictors | AIC | ∆AIC | Weight |
|---|---|---|---|---|
| A – Model: IBD + IBE + IBR | ||||
| IP | IBD + IBE | −128,716.6 | 0.00 | 1.00 |
| NW-C1 | IBD + IBE | −42,836.0 | 0.00 | 1.00 |
| NE-C2 | IBD + IBE | −10,406.3 | 0.00 | 1.00 |
| Relict-C3 | IBD + IBE | − 2938.5 | 0.00 | 1.00 |
| SW-C4 | IBR | − 3753.4 | 0.00 | 0.79 |
| B – Model: IBD + PC1 + PC2 + PC3 + IBR | ||||
| IP | IBD + PC1 + PC2 + PC3 | −128,694.0 | 0.00 | 1.00 |
| NW-C1 | IBD + PC1 + PC2 + PC3 | −42,856.2 | 0.00 | 1.00 |
| NE-C2 | IBD + PC1 + PC2 + PC3 | −10,380.3 | 0.00 | 0.83 |
| Relict-C3 | IBD + PC1 + PC2 + PC3 | − 2936.6 | 0.00 | 0.89 |
| SW-C4 | IBR | −3753.4 | 0.00 | 0.41 |
| IBR + PC2 | − 3751.6 | 1.84 | 0.17 | |
Entries are given for the entire Iberian Peninsula (IP) and the four genetic clusters detected using all populations available (N = 278). The two models include IBD, IBE and IBR, and IBE given the principal analysis components (PCs). Akaike information criterion (AIC), ∆AIC and model weight are reported