1. How Ecosystems Change
Ch. 5 Sec. 3

2. ENVIRONMENTAL SCIENCE OCT 5TH
SEV1b: Relate energy changes to food chains, food webs and trophic levels in an ecosystem
Classwork: finish Succession web quest and turn in; pick up 2 pages for succession review, staple and work on that—colored pencils on table—return at end of period—due tomorrow end of class
Closing: Explain the difference in primary and secondary succession

3. ENVIRONMENTAL SCIENCE OCT 6TH
SEV1c: Explain the difference in primary and secondary succession.
DO NOW: Turn in your Succession Web Quest
Classwork: Succession review activity—draw neatly and color your succession pictures
Closing: Explain the difference in primary and secondary succession to your table partner

4. ZOOLOGY OCT 5TH SZ2b: Explain the process of ecological succession
Classwork: finish Succession web quest and turn in; pick up 2 pages for succession review, staple and work on that—colored pencils on table—return at end of period—due tomorrow end of class
Closing: Explain the difference in primary and secondary succession

5. ZOOLOGY OCT 6TH
SZ2B: Explain the difference in primary and secondary succession.
DO NOW: Turn in your Succession Web Quest
Classwork: Succession review activity—draw neatly and color your succession pictures
Closing: Explain the difference in primary and secondary succession to your table partner

6. Succession
A regular pattern of changes over time in the types of species in a community
May take a few years to hundreds

7. Types of Succession
Primary Succession
Secondary Succession

8. Primary Succession
Occurs on surfaces where no ecosystem existed before
New islands created by volcanoes
Areas exposed after glaciers
*begins in areas of no soil

9. Secondary Succession
Occurs on a surface where an ecosystem previously existed
Forest Fires, farmland
abandoned, clear cutting,
pulp wooding

10. Succession
Pioneer species = first organisms to colonize any newly available area
Grasses, weeds, lichens, mosses

11. Succession
Climax Community = the community that eventually forms if the land is left undisturbed
Maple forest, wetland area, Pine forest

12. Importance of Forest Fires
Some small natural fires remove brush and deadwood that would contribute to major fires
Also allows some tree species to reproduce