1. Warm Up
Complete the following Venn Diagram in your composition book. It should be assignment # 15 (after the Foldable [1st] or Comparison Chart [3rd, 6th, 7th])
Secondary Succession
Primary Succession

2. Ecological Succession
Succession – gradual development of a community over time.
Huge areas of Yellowstone National Park were burned in 1988 (left). By the spring of 1989, regrowth was evident in the burned parts of the park (right).

3. Primary Succession
Development of a community where no other organisms had previously lived.
No soil
Bare rock
Slow transformation
Ex: Volcanic islands, retreating glaciers
Pioneer species – the first organisms to live in an area.
Ex: lichen, mosses

4. Primary Succession

5. Secondary Succession
Occurs when an existing community is destroyed by a natural disaster, such as fire, flood, or other habitat destruction.
Usually shorter than primary succession
Soil is present for plants to develop

6. Secondary Succession

7. Climax Community
Climax community - is a biological community of plants and animals which, through the process of ecological succession, has reached a steady state.