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. 2022 Nov 29;11:e78703. doi: 10.7554/eLife.78703

Figure 4. Effects of tree diversity on higher trophic levels and tree community productivity (global Fisher’s C = 1.677, DF = 4, p = 0.795).

Positive and negative paths are indicated in green and orange, respectively. The standardized path coefficients are indicated by the numbers, statistical significance is indicated by asterisks (*** p < 0.0001, ** p< 0.001, * p < 0.05, and + p < 0.1), and the explained variance of dependent variables is indicated by the percentage values. The gray dashed line indicates a nonsignificant (p > 0.1) pathway in the final model. The direct effect of tree species diversity on tree community productivity was removed in the model because it was not significant (p > 0.5) and the removal reduced the AICc by more than 2 (ΔAICc = 3.269).

Figure 4.

Figure 4—figure supplement 1. Effects of tree diversity on higher trophic levels and tree community productivity with functional diversity calculated using trait values of individual trees (global Fisher’s C = 119.558 DF = 4, p=0.001).

Figure 4—figure supplement 1.

Positive and negative paths are indicated in green and orange, respectively. The standardized path coefficients are indicated by the numbers, statistical significance is indicated by asterisks (*** p < 0.0001, ** p < 0.001, * p < 0.05, and + p < 0.1), and the explained variance of dependent variables is indicated by the percentage values. Gray dashed lines indicate nonsignificant (p > 0.1) pathways in the final model. To allow comparison, the same structural equation model (SEM) as for Figure 4 was used.
Figure 4—figure supplement 2. Initial structural equation model (SEM) used in this study.

Figure 4—figure supplement 2.

Tree species diversity represents the number of tree species, genetic diversity represents the number of seed families per tree species, and functional diversity (based on FDis) represents the mean distance of seed-family means to the centroid of all seed families. Herbivory represents the percentage of herbivore leaf damage, soil fungal diversity was quantified by Chao1 diversity index, and community productivity represents tree productivity of subplots (Mg ha–1).