Allee Effect

It is predicted that as population size increases toward carrying capacity, density-dependent mortality increases, therefore slowing the growth of the population. One exception that is observed in nature is the Allee effect. Because some species benefit from a positive relationship between components of individual fitness and either numbers or density of conspecifics (as discussed in the section entitled 'Individual behavior'), density-dependent mortality no longer linearly increases to carrying capacity. Rather, it has the potential to be curvilinear where it is observed to be strong at both small and large populations but weaker at intermediate levels (Figure 4). For example, cooperative breeders, such as African wild dogs (Lycaon pictus), may have a critical group size below which the group would be more likely to go extinct due to increased mortality.

Was this article helpful?

0 0
10 Ways To Fight Off Cancer

10 Ways To Fight Off Cancer

Learning About 10 Ways Fight Off Cancer Can Have Amazing Benefits For Your Life The Best Tips On How To Keep This Killer At Bay Discovering that you or a loved one has cancer can be utterly terrifying. All the same, once you comprehend the causes of cancer and learn how to reverse those causes, you or your loved one may have more than a fighting chance of beating out cancer.

Get My Free Ebook


Post a comment