Population persistence by temperature interval for genotypic sex determination (GSD) populations. (a) Temperature-dependent embryonic survival curve (TS) (black solid line) and cohort sex ratio (CSR) (black dashed line) with intercept and slope parameters (α = 0.5, β = 0.0), for populations of reptiles with GSD. The unlabelled left axis represents juvenile survival and the unlabelled right y-axis represents the proportion of male hatchlings. (b) to (h) show the number of and distribution of surviving populations of reptiles with GSD by temperature (°C) for dispersal conditions. The maximum population in each temperature interval is 1000.