Models are ranked from the most supported (best model) to the least supported according to Akaike information criteria (AIC). Δ AIC – difference in AIC between the current and best model; wi – model p
Corrected version of Fig. 3 (which originally appeared in Del Grosso et al., 2008, Ecology 89:2117–2126): Potential biome classification; total net primary production (TNPP) for potential native veget