{
  "time_units": "generations",
  "generation_time": 1,
  "doi": [],
  "description": "An example demography with one main population that is unchanged, that spawns multiple offshoot populations.",
  "metadata": {},
  "demes": [
    {
      "name": "ancestral",
      "description": "Main population",
      "start_time": "Infinity",
      "epochs": [
        {
          "end_time": 0,
          "start_size": 1000,
          "end_size": 1000,
          "size_function": "constant",
          "selfing_rate": 0,
          "cloning_rate": 0
        }
      ],
      "proportions": [],
      "ancestors": []
    },
    {
      "name": "offshoot1",
      "description": "More recent offshoot population",
      "start_time": 500,
      "epochs": [
        {
          "end_time": 0,
          "start_size": 100,
          "end_size": 100,
          "size_function": "constant",
          "selfing_rate": 0,
          "cloning_rate": 0
        }
      ],
      "proportions": [
        1
      ],
      "ancestors": [
        "ancestral"
      ]
    },
    {
      "name": "offshoot2",
      "description": "More ancient offshoot population",
      "start_time": 1000,
      "epochs": [
        {
          "end_time": 0,
          "start_size": 200,
          "end_size": 200,
          "size_function": "constant",
          "selfing_rate": 0,
          "cloning_rate": 0
        }
      ],
      "proportions": [
        1
      ],
      "ancestors": [
        "ancestral"
      ]
    }
  ],
  "migrations": [
    {
      "rate": 0.0001,
      "start_time": 200,
      "end_time": 100,
      "source": "ancestral",
      "dest": "offshoot1"
    },
    {
      "rate": 1e-05,
      "start_time": 1000,
      "end_time": 0,
      "source": "ancestral",
      "dest": "offshoot2"
    },
    {
      "rate": 1e-05,
      "start_time": 1000,
      "end_time": 0,
      "source": "offshoot2",
      "dest": "ancestral"
    },
    {
      "rate": 2e-05,
      "start_time": 500,
      "end_time": 0,
      "source": "offshoot1",
      "dest": "offshoot2"
    },
    {
      "rate": 2e-05,
      "start_time": 500,
      "end_time": 0,
      "source": "offshoot2",
      "dest": "offshoot1"
    }
  ],
  "pulses": [
    {
      "sources": [
        "offshoot1"
      ],
      "dest": "ancestral",
      "time": 50,
      "proportions": [
        0.1
      ]
    }
  ]
}