Until 7792.1 generations ago, the J deme's population was fixed at 3285. From 7792.1 to 2159.3394, it underwent a linear change to 4198 individuals. Then, a linear growth brought the count to 6881 by 2096.0. Since then, from 2096.0 generations to the current day, the population has reduced from 6881 to 4756 at a linear rate.
time_units: generations
demes:
  - name: J
    start_time: .inf
    epochs:
      - start_size: 3285
        end_time: 7792.1
      - start_size: 3285
        end_size: 4198
        end_time: 2159.3394
        size_function: linear
      - start_size: 4198
        end_time: 2096.0
        end_size: 6881
        size_function: linear
      - end_time: 0
        start_size: 6881
        end_size: 4756
        size_function: linear