1. Population Ecology

2. Bellringer
Can you name any natural disasters that have affected human populations…
Globally?
In Florida?
Access prior knowledge and lead class discussion. Clarify all definitions and bulleted topics. 2

3. Natural Changes In Communities
Is it normal for communities to change?

4. Natural Changes In Communities
Seasonal variations
Climate Change
Succession

5. Succession
Series of predictable changes in community (move in/move out)
After a catastrophe, what do you think the ecosystem will do first to recover?

6. Types of Succession Primary Succession Secondary Succession
_____________________: FIRST species to return to an area after a disaster
Begins with _______________rock
_______________________/wiped out
Example: Rock  ________________ moss
Can happen fast because the soil is ______________________from the previous community
Begins with _______________
Example: grass  shrub  ______________________

7. Check for Understanding Activity
Mt. Rainier erupted leaving nothing but bare rock and the succession of the ecosystem is described in the images below. Give each photo a description and be sure to use the words: primary, secondary, succession, pioneer species, soil, and rock. Circle the image that represents primary succession.

8. Biodiversity
____________________ is the variety of life in a particular ecosystem or habitat
How much biodiversity do we have in the classroom?
Is there more or less biodiversity in a rainforest?

9. Check for understanding
What has more biodiversity: a tundra or a rainforest? Explain your answer!

10. Benefits of Biodiversity
Why might it be a good thing to have different types of organisms in an area?
VS.

11. Check for Understanding
Which would be more affected by removing a species? A tundra or a rainforest?
Which would be more affected by a catastrophe? A tundra or a rainforest?

12. 1. Food, water, shelter, and a
HOT Question!
1. Food, water, shelter, and a
space in which to live all
describe an organism's:
A. biome
B. population
C. habitat
D. community.

13. HOT Question!
2. Which is a natural cause of ecosystem change? A. Farming B. Building fences C. Pollution D. Hurricane

14. HOT Question!
3. What kinds of conditions might prevent community from returning to its pre-disturbed state following a catastrophe?