Table 2. Random Forests models results using the three input sets.

Random Forests Out-of-bag estimates
	Shannon index
Hyperspectral band reflectance metrics	pseudo-R2 = 84.91%, OOB-RMSE  = 0.30
First derivatives reflectance metrics	pseudo-R2 = 71.42%, OOB-RMSE  = 0.35
Vegetation indices	pseudo-R2: -15.97%, OOB-RMSE  = 0.51