Initially, the Y deme maintained a population of 1431 until 6208.9936 generations ago. From 6208.9936 to 5734.9824, its size changed exponentially to population size 3208. A linear reduction ensued, culminating in 1592 individuals by 5722.0. Starting from 5722.0 generations ago, the population has reduced from 1592 to 325, at a exponential rate.
time_units: generations
demes:
  - name: Y
    start_time: .inf
    epochs:
      - start_size: 1431
        end_time: 6208.9936
      - start_size: 1431
        end_size: 3208
        end_time: 5734.9824
        size_function: exponential
      - start_size: 3208
        end_time: 5722.0
        end_size: 1592
        size_function: linear
      - end_time: 0
        start_size: 1592
        end_size: 325
        size_function: exponential