The deme of P kept its population at 6686 until 9824.0 generations ago, when a exponential decrease ensued until 9508.0, to size 1571. Subsequently, a linear change changed the numbers to 7455 individuals by 1881.159. Starting from 1881.159, the population has seen a decrease from 7455 to 1254 at a linear pace, continuing to this day.
time_units: generations
demes:
  - name: P
    start_time: .inf
    epochs:
      - start_size: 6686
        end_time: 9824.0
      - start_size: 6686
        end_size: 1571
        end_time: 9508.0
        size_function: exponential
      - start_size: 1571
        end_time: 1881.159
        end_size: 7455
        size_function: linear
      - end_time: 0
        start_size: 7455
        end_size: 1254
        size_function: linear