Table 1. Description of the variables used in the model.
| Variables | Description | Included | Source |
|---|---|---|---|
| bio_1 | Annual mean temperature | WorldClim (http://worldclim.org) | |
| bio_2 | Mean diurnal range (Mean of monthly (max temp –min temp)) | Yes | |
| bio_3 | Isothermality (Bio 2/Bio 7) (×100) | ||
| bio_4 | Temperature seasonality (standard deviation × 100) | Yes | |
| bio_5 | Max temperature of warmest month | ||
| bio_6 | Min temperature of coldest month | ||
| bio_7 | Temperature annual range (Bio 5–Bio 6) | ||
| bio_8 | Mean temperature of wettest quarter | Yes | |
| bio_9 | Mean temperature of driest quarter | Yes | |
| bio_10 | Mean temperature of warmest quarter | ||
| bio_11 | Mean temperature of coldest quarter | ||
| bio_12 | Annual precipitation | ||
| bio_13 | Precipitation of wettest month | Yes | |
| bio_14 | Precipitation of driest month | Yes | |
| bio_15 | Precipitation seasonality (Coefficient of Variation) | Yes | |
| bio_16 | Precipitation of wettest quarter | ||
| bio_17 | Precipitation of driest quarter | ||
| bio_18 | Precipitation of warmest quarter | Yes | |
| bio_19 | Precipitation of coldest quarter | Yes |
Note:
The current and future bioclimatic data were obtained from the WorldClim website. After removing multi-collinearity, nine variables were included in the final model.