Fig. 7.

The frequencies of Grass and Tree along the variable state space with $\beta =0.32$ (A), $0.36$ (B), $0.40$ (C). (D) The variances Grass ${\sigma }_S$ and the variances Tree ${\sigma }_F$ versus $\beta$. (E) The logarithms of the variances of the first passage time from Savanna to Forest $\log \left({\sigma }_{SF}\right)$ and the first passage time from Forest to Savanna $\log \left({\sigma }_{FS}\right)$, and the logarithms of the sum of them $\log \left({\sigma }_{SF}+{\sigma }_{FS}\right)$ versus $\beta$.