Figure 3.

Extinction probabilities of the reservoir over its lifetime. Examples of reservoir extinction distributions with distinct initial reservoir sizes (5 M, solid line; 15 M, dashed line) and Geometric ($1/(1+\Lambda )$) offspring distributions, where $\Lambda =$ 0.43 (black), 0.53 (blue), 0.67 (orange), or 0.82 (pink). Λ represents the expected number of offspring per generation ($\mathit{yea}{r}^{-1}$). The half-lives of these example populations are $t_{\frac{1}{2}}\approx$ 0.82 (black), 1.12 (blue), 1.71 (orange), and 3.46 (pink) years.