Table 1.
List of different bioclimatic variables used in ecological niche modelling.
| Variable | Description | Temporal scale |
|---|---|---|
| Bio 1 | Annual Mean Temperature | Annual |
| Bio 2 | Mean Diurnal Range | Variation |
| Bio 3 | Isothermality | Variation |
| Bio 4 | Temperature Seasonality | Variation |
| Bio 5 | Maximum Temperature of the Warmest Month | Month |
| Bio 6 | Minimum Temperature of the Coldest Month | Month |
| Bio 7 | Temperature Annual Range | Annual |
| Bio 8 | Mean Temperature of Wettest Quarter | Quarter |
| Bio 9 | Mean Temperature of Driest Quarter | Quarter |
| Bio 10 | Mean Temperature of Warmest Quarter | Quarter |
| Bio 11 | Mean Temperature of Coldest Quarter | Quarter |
| Bio 12 | Annual Precipitation | Annual |
| Bio 13 | Precipitation of Wettest Month | Month |
| Bio 14 | Precipitation of Driest Month | Month |
| Bio 15 | Precipitation Seasonality | Variation |
| Bio 16 | Precipitation of Wettest Month | Quarter |
| Bio 17 | Precipitation of Driest Month | Quarter |
| Bio 18 | Precipitation of Warmest Quarter | Quarter |
| Bio 19 | Precipitation of Coldest Quarter | Quarter |
Source Hijmans et al. (2005).