• What do population size, density and abundance mean?

    Population size is the actual number of individuals in a population. Population density is a measurement of population size per unit area, i.e., population size divided by total land area. Abundance refers to the relative representation of a species in a particular ecosystem. For example, sometimes, due to financial, logistical, or time constraints, ape surveys can only deliver abundance indices such as nest-group encounter rate, instead of total population size estimates.

  • How do population size, density and abundance change?

  • How do you determine population size, density and abundance?

  • Why is it important to understand population size, density and abundance?

Compiled and edited 2011 by Kay H. Farmer
Reviewed by Hjalmar Kuehl, Josephine Head and Neba Funwi-Gabga

  • References