| Vegetation Type | mean | std dev |
| Prosopis glandulosa | 0.60 | ±0.07 |
| Bouteloua eriopoda | 0.58 | ±0.14 |
| Larrea tridentata | 0.71 | ±0.08 |
| Flourensia cernua | 0.41 | ±0.20 |
| Playa Dry Lake | 0.70 | ±0.17 |