Population ecology

• Biologie
• Middelbare school
• vwo
• Leerjaar 6

How can we measure or estimate population size?

Estimating population size of mobile organisms: gather data using capture-mark-release-recapture and calculate population using the Lincoln Index.

How do populations grow?

Limiting factors are an environmental factors that restrict population growth.

Examples:

Limiting factors are an environmental factors that restrict population growth.

Density-dependent factors:

- competition for resources

- predation

- parasitism

- infectious disease

Density-independent factors:

- temperature

- weather events

- destruction of habitat

- etc.

Carrying capacity (K): maximum population size that can be sustainably supported by a specific environment.

Limiting factors determine the carrying capacity.

Simulation population growth of yeast:

J curve

- exponential growth

- unlimited resources

Questions to think about while watching

• What are the limiting factors for the purple sea urchin population?
• What kind of growth curve did the purple sea urchin population have?
• What could be done do reduce the purple sea urchin population?