Fig 2. Bet-hedging region in temporally varying environments.

Optimal strategy α* as a function of growth rates ${\tilde{s}}_a\equiv s_a/s_s$ and ${\tilde{s}}_b\equiv s_b/s_s$ for range expansions in temporally varying environments under the limits of environmental change rate (A) k → 0, see Eq (7), and (B) k → ∞. In all panels, lines delimit the bet-hedging region 0 ≤ α* ≤ 1. Two dots in the panels mark parameter values chosen for the analysis of Figs 3, 4 and 5.