Table 3.
Results of RDA Significance Tests (the Proportion of Genotypic Variance Explained, df and P-values Obtained through 1,000 Permutations; Significant P-values are in Bold), Detailed for the Full RDA Analysis (Model with All Significant Terms), and the Marginal Effect of Each Constraining Variable in the Model
| RDA |
Conditioned RDA |
|||||
|---|---|---|---|---|---|---|
| % of Variance Explained | df | P-Value | % of Variance Explained | df | P-Value | |
| Global analysis | 40.90 | 5 | 0.001 | — | ||
| Residual | 59.10 | 59 | — | |||
| Marginal test | ||||||
| Habitat | 5.90 | 1 | 0.001 | 5.90 | 1 | 0.001 |
| Clim_PC1 | 8.00 | 1 | 0.001 | 7.90 | 1 | 0.001 |
| Clim_PC2 | 6.00 | 1 | 0.001 | 6.00 | 1 | 0.001 |
| Longitude | 8.40 | 1 | 0.001 | 8.40 | 1 | 0.001 |
| Latitude | 7.60 | 1 | 0.001 | 7.10 | 1 | 0.001 |
| Residual | 59.10 | 59 | — | 59.10 | 59 | — |
Note.—The marginal effect of each constraining variable was tested through permutation tests by removing each term one by one from the model containing all other terms. The conditioned RDA reported conditioned (partial) RDA significance tests for each term, after conditioning on other constraining variables to remove their confounding effects.