Population ecology

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BiologieMiddelbare schoolvwoLeerjaar 6

This lesson contains 23 slides, with text slides and 2 videos.

Lesson duration is: 120 min

Items in this lesson

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How can we measure or estimate population size?

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

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How do populations grow?

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Limiting factors are an environmental factors that restrict population growth.

Examples:

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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.

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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:

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J curve

- exponential growth

- unlimited resources

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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?

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