What is the difference between primary and secondary succession?

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Presentation transcript:

What is the difference between primary and secondary succession? Ecology Lesson 5 What is the difference between primary and secondary succession?

Do Now Have you ever observed a vacant lot or an untended garden over time? What changes did you see?

Essential Question What is the difference between primary and secondary succession?

Vocabulary Succession The series of predictable changes that occur in a community over time. Primary succession Series of changes that occur in an area where no soil or organism exist. Pioneer species First species to grow in an area with little or no soil. Secondary succession Series of changes that occur in a area where the ecosystem has been disturbed, but soil and organisms still exist.

Assignment Read pages 32-35. Complete the diagram.

Summarization Activity What is primary Succession?

Do Now Review your diagrams from yesterday.

Definition Examples Stages Primary Succession

Definition Series of changes that occur in an area where no soil or organism exist. Examples New islands formed by the eruption of volcanoes Area of rock uncovered by melting sheets of ice Stages Volcanic eruption. Pioneer species inhabit the land. Soil is formed. Fertile soil and maturing plants Primary Succession

Definition Examples Stages Secondary Succession

Definition Series of changes that occur in a area where the ecosystem has been disturbed, but soil and organisms still exist. Examples Fires Hurricanes Tornadoes Human activity- farming, logging, mining Stages Grasses and wildflowers take over field. Pine seedlings and other plant replace grasses. A forest develops Mature trees Secondary Succession

Assignment With a partner and using your diagrams, write an explanation to contrast primary and secondary succession.

Explanation student examples

Answer the essential question What is the difference between primary and secondary succession?

Homework Read Changes in the Communities. Complete explorer page 72-73. ..\..\Ecology\ecology\72-73.doc

Summarization Activity Complete explorer page 74.