Table 7.
Character loadings, eigenvalues and percentage of explained variance for Principal Components (PC) I–IV. The analysis was based in eleven environmental variables extracted from presence localities of 26 species of Pristimantis, subgenus Huicundomantis. Bold figures indicate highest loadings.
| Variable | PCI | PCII | PCIII | PCIV |
|---|---|---|---|---|
| Annual mean temperature | 0.956 | 0.014 | -0.139 | 0.153 |
| Mean diurnal temperature range | 0.680 | -0.365 | -0.026 | -0.383 |
| Temperature seasonality | -0.257 | 0.016 | 0.465 | 0.642 |
| Max temperature of warmest month | 0.966 | -0.046 | -0.122 | 0.121 |
| Min temperature of coldest month | 0.930 | 0.050 | -0.153 | 0.201 |
| Annual precipitation | 0.382 | -0.395 | 0.777 | -0.101 |
| Precipitation of warmest quarter | 0.219 | 0.156 | 0.709 | 0.234 |
| Precipitation of coldest quarter | 0.428 | -0.605 | 0.210 | -0.268 |
| Gross primary production | 0.377 | 0.839 | 0.128 | -0.185 |
| Leaf area index | 0.469 | 0.797 | 0.146 | -0.125 |
| Normalized difference vegetation index | 0.339 | -0.229 | -0.378 | 0.611 |
| Eigenvalue | 4.096 | 2.074 | 1.606 | 1.198 |
| Cumulative variance (%) | 37.23 | 56.09 | 70.69 | 81.58 |