1. April 26th, 2010 Warm-up: pds 1,3 Objective:
1. What are the three types of symbiosis?
2. Give an example of mutualism.
3. Can species that are ecological equivalents be in a symbiotic relationship? Why or why not?
Objective:
Describe the three types of symbiosis through a matching activity.
Describe the processes of primary and secondary succession by observing photographs.

2. April 26th, 2010
Warm-up: pds 5,6,7
1. Can species that are ecological equivalents be in a symbiotic relationship? Why or why not?
2. How long do you think it takes for a large area of dirt to turn into a forest?
3. What is weathering? How would weathering impact an ecosystem?
Objective:
Describe the processes of primary and secondary succession by observing photographs.

3. What will happen if the grass is not cut?

4. What are some examples of catastrophic events?

5. April 26th 2010
Succession is the sequence of biotic changes that regenerate a damaged community or create a community from a previously uninhabited area.
Succession is the regrowth or creation of a new ecosystem.

6. Two types of Succession
Primary Succession: establishment of an ecosystem in an area that was previously uninhabited.
Ex: Volcanic eruptions formed Hawaiian Islands-- plants and animals then formed

7. Two types of Succession
Secondary Succession: a disturbance destroys an established community and is rebuilt
Ex: Forest destroyed by fire begins to regrow

8. Forms of Succession Forest Succession Dune Succession
Reef (Ocean) Succession

9. How does Primary Succession work?

10. Real Examples of Primary Succession
Glacier Bay National Park
Glacier recedes

11. How does Secondary Succession work?

12. Pioneer Species Lichens and mosses are examples of pioneer species.
Pioneer species are the species that are first to live in an uninhabited area.

13. Climax Community
The climax community is the steady state of plant and animal organisms after ecological succession.
All species are established. Equilibrium is achieved.

14. Why is succession a good thing?
Recycling of Carbon and Nitrogen
Carbon in trees burns into ash from a fire
Bacteria fix nitrogen
Removal of Invasive species
Natural Selection – The more fit species may survive or re-colonize

15. What could cause a Secondary Succession?
Fire
Storm (hurricane, tornado, typhoon, etc)
Insect outbreak
Logging

16. How humans impact the cycle
Prevention of Fires
Why is this bad?

17. How Humans Impact the Cycle
Farming or Cutting the Grass
Prevents succession
Only allows for survival of pioneer species
Decreases biodiversity
Decreases biomass

18. How Humans Impact the Cycle
Coral Reefs are dying
Pollution
Warm waters/weather patterns: El Nino
Ecological Reconstruction