| Appendix C (Table C1). Results for the “reduced form” of the model of native richness (Fig. 2 in main article) presenting unstandardized estimates, test statistics, and standardized parameters. The reduced form model omits the composite variables and permits tests of the relationships among observed variables for significance. Z values are analogous to t-values and judged similarly. LNR = log native richness, OV = overstory canopy cover, OV2 = overstory canopy cover squared, BUR = density of animal burrows, LPPT = log mean precipitation, K = soil potassium concentration, LEC = log exotic plant cover, B = soil boron concentration, C/M = soil calcium to magnesium ratio, GR = whether the site was actively grazed or not, LELV = log mean elevation. Mplus code for both reduced form and composite models can be obtained from JBG. |