The J deme's size was 3437 until 7869.8813 generations ago, when it began a linear reduction, reaching 2544 individuals by 6371.13. After this period, the population underwent an exponential increase, reaching 7036 individuals by 3188.252. From 3188.252 generations ago to now, the population reduced from 7036 to 1116 at a linear rate.
time_units: generations
demes:
  - name: J
    start_time: .inf
    epochs:
      - start_size: 3437
        end_time: 7869.8813
      - start_size: 3437
        end_size: 2544
        end_time: 6371.13
        size_function: linear
      - start_size: 2544
        end_time: 3188.252
        end_size: 7036
        size_function: exponential
      - end_time: 0
        start_size: 7036
        end_size: 1116
        size_function: linear