1. What is Succession?

2. Get out your notes and HW
Start working on the sheet from the middle of the room!
Thank you!

3. Succession An orderly change in communities of
organisms that occurs over time:
Primary- begins with bare rock after geologic activity (ex: volcano)
Secondary- begins on soil from which previous community has been removed (fire, agriculture...)

4. Primary Succession

5. Secondary Succession

6. Think about here...
What would happen if we let the sports fields go? If we stopped maintaining them?

7. Grass Shrubs Trees Forest

8. Primary or Secondary?

9. Primary or Secondary?

10. Primary or Secondary?

11. Primary or Secondary?

12. Pioneer Species- the first to arrive

13. Climax Community- the final goal

14. Disturbance- natural and humangopher tortoise, fl scrub

15. Clear Cutting- People can speed up by planting trees

16. Fire can clean up an area… Example: Palmetto vs scrub oak

17. Some Disturbance is Devastating!

19. Pioneer Stage Bare muddy or sandy bottom Algae is primary producer
Caddisfly Larva and fish that nest or burrow in bottom

21. Submergent Plant Stage
Organisms decay forming soil on bottom
Small aquatic plants grow but do not reach surface
Dragonfly and Mayfly larva as well as weedy bottom fish

23. Emergent Plant Stage Continues to fill with decaying matter
Larger plants grow through surface
Cattails, bullrushes, water lilies
Frogs, turtles, salamanders, a few fish
Bacteria consume O2, less available to fish

25. Marsh No large open areas of water Vegetation covers most of the land
No truly aquatic fish can survive

27. Swamp Marsh has become more dry, filled with more soil
Trees start to grow like swamp maple and swamp willow

29. Forest Swamp has filled in with soil and dried up
Trees like maple and beech dominate