Fig. 2

a This graph shows the qualitative behavior of excess food and people over time. The red region shows initial values where the population goes extinct, yellow where the population survive, and green where the population does not change. b This graph shows a simulation with an initial population (5) much greater than the carrying capacity (1.4), there the population survives; c this graph shows the qualitative behavior of excess food and people over time with a different equilibrium profile. d This graph shows a simulation with an initial population (5) much greater than the carrying capacity (1.4). Instead of surviving, the village goes extinct