| Environmental covariates | Representative digital data | Source of data |
| Digital Elevation Model (m) | Slope | 12.5 m ALOS PALSAR |
| Distance to environmental hotspots (m) | Hotspots (Sewer treatment plants, dumpsites, Industries, and roads) | Google earth pro |
| Land-use land-cover map | Bands 4, 3 and 2 | 10 m Sentinel 2 |