POPULATION EQUATIONS

If you are managing a wildlife population, there are three variables that you want to watch closely, theses are:

  the population (P),      the rate of reproduction (R),      and the rate of attrition,(A)

(R) rate of reproduction simply means how many new animals are born as a percentage of the total population. For example, if the population starts out at60, and the rate of reproduction is 20%, then in one year there will be 20% of60=12 young animals born.

(A) rate of attrition is the number of animals that die each year, as a percentage of the total population. For example, if the population starts out at 60, and the rate of attrition is 10%, then in that year there would be 10%of 60=6 animal deaths.

𝑷𝟏𝟗𝟗𝟕   = 𝑷𝟏𝟗𝟗𝟔   + 𝑷𝟏𝟗𝟗𝟔 (R −A)