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This is a very nice and detailed explanation of Allee Effects, a summary term for (mostly) stochastic events that heighten the probability of population extinction when population levels become very low. These effects are included in the CEG simulations as the MVP parameter, or Minimum Viable Population. MVP is taken as a proportion of the initial K (carrying capacity), and if realizable K falls to or below this level, the population is considered to be functionally extinction.

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