1. Population Density & Distribution

2. Population Density
Population density is the number of individuals that live in a defined area!!
Cities have more dense populations of people
Rural areas have more widely spread out, or dispersed, populations
Different populations have different population densities.

3. Population Density
Different populations have different population densities
Population density is a measurement of number of individuals living in a defined area.

6. Why do we study populations?
To learn about the lifestyle of different species and about environmental changes that are affecting the health of different populations.

7. Geographic dispersion
Shows how individuals in a population are spaced out
Population dispersion is the way in which individuals of a population are distributed, or spread out, in an area.
Dispersion patterns help us understand species interactions.

8. Population Dispersion
Clumped dispersion
Uniform dispersion
Random dispersion

9. Population Dispersion
Clumped dispersion
Individuals live close together in groups
This might help with:
Mating
Protection
Sharing of resources

10. Population Dispersion
Uniform dispersion
Individuals live at specific distances from another
This might help with:
competition

11. Population Dispersion
Random dispersion
Individuals are spread out randomly in an area.
This might help with:
Competition
Resource availability