1. Succession

2. Objectives Chapter 19 Describe the process of succession.
Section 2 Ecological Succession
Objectives
Describe the process of succession.
Contrast primary and secondary succession.
Explain how mature communities develop.
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3. Chapter 19 Regrowth of a Forest
Section 2 Ecological 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.
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4. Chapter 19 Primary Succession
Section 2 Ecological 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.
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5. Chapter 19 Section 2 Ecological Succession
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6. Chapter 19 Secondary Succession
Section 2 Ecological 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.
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7. Chapter 19 Section 2 Ecological Succession
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8. Ecological Succession
Chapter 19
Section 2 Ecological Succession
Ecological Succession
Click below to watch the Visual Concept.
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Visual Concept
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9. Mature Communities and Biodiversity
Chapter 19
Section 2 Ecological 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.
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10. Mature Communities and Biodiversity, continued
Chapter 19
Section 2 Ecological 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.
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11. Chapter 19
Cycles in Nature
Concept Map
Use the terms below to complete the concept map on the next slide.
water cycle
decomposition
carbon cycle
photosynthesis
carbon
combustion
condensation
precipitation
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