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Succession

Succession. Chapter 19. Section 2 Ecological Succession. Objectives. Describe the process of succession. Contrast primary and secondary succession. Explain how mature communities develop. Chapter 19. Section 2 Ecological Succession. Regrowth of a Forest.

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Succession

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  1. Succession

  2. Chapter 19 Section 2Ecological Succession Objectives • Describe the process of succession. • Contrast primary and secondary succession. • Explain how mature communities develop.

  3. Chapter 19 Section 2Ecological Succession Regrowth of a Forest • Succession The replacement of one type of community by another at a single place over a period of time is called succession. • The regrowth of a forest after a forest fire is an example of succession. • Succession takes place in all communities, not just those affected by disturbances such as forest fires.

  4. Chapter 19 Section 2Ecological Succession Primary Succession • Sometimes, a small community starts to grow in an area where other organisms had not previously lived. • Over a very long time, a series of organisms live and die on the rock. The rock is slowly transformed into soil. This process is called primary succession.

  5. Section 2Ecological Succession Chapter 19

  6. Chapter 19 Section 2Ecological Succession Secondary Succession • Sometimes, a community is disturbed in some way. If soil is left intact, the original community may regrow through a series of stages called secondary succession.

  7. Section 2Ecological Succession Chapter 19

  8. Chapter 19 Section 2Ecological Succession Ecological Succession Click below to watch the Visual Concept. You may stop the video at any time by pressing the Esc key. Visual Concept

  9. Chapter 19 Section 2Ecological Succession Mature Communities and Biodiversity • In the early stages of succession, only a few species grow in an area. As a community matures, it may be dominated by a well-adapted, slow-growing climax species. • The variety of species that are present in an area is referred to as biodiversity. Having biodiversity helps communities lessen the impact and spread of disturbances such as insect invasions.

  10. Chapter 19 Section 2Ecological Succession Mature Communities and Biodiversity, continued • Mature communities tend to have biodiversity. A mature community simply has organisms that are well adapted to live together in the same area over time.

  11. Chapter 19 Cycles in Nature Concept Map Use the terms below to complete the concept map on the next slide.

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