Appendix 1—figure 15. Trait space of a community evolved under neutral model at three time steps: $1\times {10}^6$, $2\times {10}^6$, and $3\times {10}^6$ with $\lambda =100$, $r=0.9$, $\mu =0.001$, and $m=0.02$.

Note the small size of the trait space in comparison to a non-neutral model (bottom left panel of Appendix 1—figure 3).