1. BIO 110, Life Science Summer 2012

2. Density and distribution Individuals per unit area Regular, random, or clumped How are the data gathered?

3. Age structure

4. Survivorship curves

5. Life history traits

6. Examples

7. Exponential growth No limiting factors Growth rate increases with time Invasion of open habitat can start out this way

8. Logistic growth Carrying capacity Relationship to equilibrial life history strategy

9. Regulation of growth Density-dependent factors – Food – Nesting sites Density-independent factors – Weather – Fire

10. Population cycles Periodic changes in abundance – What they eat – What eats them Cycling of predators and prey independent of resources

11. Using population ecology Endangered species – Eschscholzia rhombipetala Sustainable resource management – Slimehead Invasive species – Giant reed Biological control of pests

12. Human population growth Rate vs. size