1. Warm Up 4/9

2. Ecosystem Interactions
Cut out and glue the vocabulary words IN THIS ORDER into a column in your spiral. Be sure to leave room for the definition and example to the right of the word.
Biotic
Abiotic
Population Density
Population Growth
Exponential Growth
Logistic Growth
Carrying Capacity
Density-Independent Limiting Factor
Density-Dependent Limiting Factor
Ecological Succession
Primary Succession
Secondary Succession

3. Ecosystem Interactions
Cut out the definitions.
Match them up to the words, do the best you can.
Now cut out the examples.
We will be going over this in class.
DON’T GLUE TILL YOU KNOW IT’S RIGHT!

4. Ecosystem Interactions & Populations

5. Biotic Factors
Biological influences that include the entire living cast of characters in which an organism might interact
Examples: bacteria, plants, bullfrogs, birds, Mrs. Vohl, Chupacabra

6. Abiotic factors Physical or nonliving factors that shape ecosystems
Examples: wind, hurricanes, soil, temperature, light, this classroom

7. Population Density
The number of individuals per unit area

8. Population Growth Emigration
# of births, # of deaths & # of people leaving and/or entering
Immigration
Population
Emigration

9. Exponential Growth
Reproduction at a constant rate; unlimited resources

10. Logistic Growth
Population growth slows or stops after exponential growth; limited resources

11. Carrying Capacity
The largest number of individuals that a given environment can support

13. Density-Independent Limiting Factors
Causes population to decrease regardless of population size
Weather, natural disasters, human activities

14. Density-Dependent Limiting Factors
Causes population growth to decrease when density is high

15. Types of Density-Dependent Factors
Competition
Predation
Parasitism & Disease

16. Ecological Succession
A series of predictable changes that occurs in a community over time
Can be caused by slow changes in the physical environment or a sudden natural
disturbance from
human activity
(clearing a forest)

17. Primary Succession
Succession that occurs on surfaces where no soil exists (volcanic eruptions)
The pioneer species on volcanic rocks are often lichens
(combination of fungus
and algae)

18. Secondary Succession
A disturbance of some kind changes an existing community without removing the soil

19. Succession
video

20. Password Review
Link

21. Six Weeks Test Next Wed/Thu
Let me know if you want the review early, it will be due on test day.
Everyone else will get it on Monday

22. Succession Reading and Worksheet
You have a class set of a reading that talks about succession happening in a pond.
Read the information and answer the questions.

23. Cool Down
What is the difference between primary and secondary succession?
What is the difference between density-dependent and density-independent limiting factors? Give an example of each.
Clean up!
Put your scissors and glue sticks away.
Throw away your trash.
Leave your table tidy!