1. Succession
Living Environment

2. Objectives…I can… Describe how ecosystems recover from a disturbance.
Compare primary and secondary succession.
Define pioneers and climax community.

3. Succession
The regular pattern of change over time in an ecosystem

4. Pioneers – first organisms in an area
ex: lichens

5. Climax Community – final, stable community that forms if an area is left undisturbed
Ex: biomes

6. Terrestrial Succession

7. Types of Succession
Primary Succession – occurs where no ecosystem existed previously
(on new volcanic islands, where glaciers retreat, etc.)
Secondary Succession – occurs where an ecosystem has previously been
(after forest fires, floods, etc.)

8. Aquatic Succession
Ecosystem changes from a lake or pond to a forest over time
Sediment from erosion and decomposition slowly accumulates in lakes
– they become more shallow

9. Place the pictures in order.