Up until 5563.4 generations ago, the population of A deme was constant at 844. It then entered a exponential phase of growth until 3270.0 generations, reaching size 1536. This was succeeded by an exponential phase of change, leading to 4849 by 1822.18. From 1822.18 generations to present, the population has reduced from 4849 to 1191 linearly.
time_units: generations
demes:
  - name: A
    start_time: .inf
    epochs:
      - start_size: 844
        end_time: 5563.4
      - start_size: 844
        end_size: 1536
        end_time: 3270.0
        size_function: exponential
      - start_size: 1536
        end_time: 1822.18
        end_size: 4849
        size_function: exponential
      - end_time: 0
        start_size: 4849
        end_size: 1191
        size_function: linear