1. ECOLOGICAL SUCCESSION
(pp. 63 – 64 and 94 – 95)

2. ECOLOGICAL SUCCESSION
Succession – a series of predictable changes that occur in a community over time. Can be the result of:
1. slow changes in the physical environment OR
2. a sudden disturbance from human activities

3. Primary succession: succession that occurs on surfaces where no soil exists
Example: islands formed from volcanic eruptions or bare rock exposed when glaciers melt
Pioneer species: first species to populate an area
Example: lichens on volcanic rock

4. B. Secondary succession – succession that occurs when some kind of disturbance changes an existing community without
removing the soil
Example: clear cutting forests, wildfires

5. Exploring Time Gallery Display