The U deme had a size of 8505 until 7798.0 generations ago. From 7798.0 generations to time 5084.15, its size changed exponentially to 4234 individuals. After that, until 1162.3, the population had a linear reduction to 3471 individuals. It then grew from 3471 to 8616, starting 1162.3 generations ago, until current times, at a exponential rate.
time_units: generations
demes:
  - name: U
    start_time: .inf
    epochs:
      - start_size: 8505
        end_time: 7798.0
      - start_size: 8505
        end_size: 4234
        end_time: 5084.15
        size_function: exponential
      - start_size: 4234
        end_time: 1162.3
        end_size: 3471
        size_function: linear
      - end_time: 0
        start_size: 3471
        end_size: 8616
        size_function: exponential