Up until 9410.7 generations ago, the population of Z deme was constant at 2379. It then entered a exponential phase of increase until 5727.857 generations, reaching size 7208. This was succeeded by an exponential phase of change, leading to 4141 by 1289.8237. From 1289.8237 generations to present, the population has reduced from 4141 to 2919 exponentially.
time_units: generations
demes:
  - name: Z
    start_time: .inf
    epochs:
      - start_size: 2379
        end_time: 9410.7
      - start_size: 2379
        end_size: 7208
        end_time: 5727.857
        size_function: exponential
      - start_size: 7208
        end_time: 1289.8237
        end_size: 4141
        size_function: exponential
      - end_time: 0
        start_size: 4141
        end_size: 2919
        size_function: exponential