Up to 6639.6786 generations ago, the population of the D deme was steady at 254. It then entered a phase of exponential change until 4202.5 generations and size 3420. Following this, there was a linear increase to 9853 individuals, lasting until 3446.32. Since 3446.32 generations ago, the population has decreased from 9853 to 387 at a linear pace.
time_units: generations
demes:
  - name: D
    start_time: .inf
    epochs:
      - start_size: 254
        end_time: 6639.6786
      - start_size: 254
        end_size: 3420
        end_time: 4202.5
        size_function: exponential
      - start_size: 3420
        end_time: 3446.32
        end_size: 9853
        size_function: linear
      - end_time: 0
        start_size: 9853
        end_size: 387
        size_function: linear