Figure 7.

Structural equation model representing relationship of Heracleum persicum cover and invasibility with cover of (a) 10 dominant native species and (b) all the native species. Zero χ² score and degree of freedom, and comparative fit index (or Tucker–Lewis index) of 1 indicate tight model‐data fit. Solid and broken arrows indicate significant and nonsignificant relationships, respectively. The values on the arrows are standardized path coefficients indicating associations (− indicates negative association). The R ² values are provided for response variables