The deme of C kept its population at 7621 until 8112.468 generations ago, when a linear reduction ensued until 5069.5, to size 5027. Subsequently, a exponential reduction changed the numbers to 2523 individuals by 4309.9. Starting from 4309.9, the population has seen a reduction from 2523 to 1178 at a linear pace, continuing to this day.
time_units: generations
demes:
  - name: C
    start_time: .inf
    epochs:
      - start_size: 7621
        end_time: 8112.468
      - start_size: 7621
        end_size: 5027
        end_time: 5069.5
        size_function: linear
      - start_size: 5027
        end_time: 4309.9
        end_size: 2523
        size_function: exponential
      - end_time: 0
        start_size: 2523
        end_size: 1178
        size_function: linear