Fig. 7. Ecological Index (EI) vs. mean annual harvest for four selective-logging strategies of tropical montane cloud forest in central Veracruz, Mexico, which target only specific plant functional types (PFTs) and diameter ranges and three logging strategies (selective logging with and without large-tree retention, clearcutting in narrow bands) of Valdivian temperate rainforest in northern Chiloé Island, Chile. EI provides a combined measure of structural change, compositional change, stand leaf area index, and the number of old trees (>1 m dbh) (for full details, see Rüger et al. 2007b). Undisturbed old-growth forest has an EI value close to 1.