Extermination

The mortality symbol is used to specify the conditions under which one instance of a population submodel is destroyed.

How to add a Extermination symbol

The extermination symbol only has meaning in the context of a population submodel. Therefore, it makes sense to construct a population submodel first, then add the mortality symbol to it. This is not strictly necessary: you can add the mortality symbol first, then construct a submodel around it, then make the submodel into a population submodel, but it is better practice to construct the population submodel first.

So, assuming that you already have a population submodel in your model diagram:

Rules

  • The mortality symbol can receive influences from anywhere in the model, both inside and outside the population submodel of which it is a part. This means that the chances of an individual instance being destroyed can depend on both factors that are external to the population, and on the characteristics of that particular individual.
  • There can be multiple mortality symbols in the same population submodel.