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Relative importance predictor index metrics for total stem dry weight biomass (SDW). Bar plots of each model index describe the variance explained as a percentage R2 (summed to 100%). For each predictor, confidence intervals (CIs) were produced using 1000 bootstrap replicates at a 95% level of significance. Low percentages of total R2 or CIs approaching zero describe unimportant variable contributions (e.g., SPD, “First” index method).
