1. Predator / Prey
Relationships

2. The population of all organisms is constant.
Healthy Ecosystem
The population of all organisms is constant.

3. Grass is Diseased
Grass population decreases rabbit population begins to decrease.
Next, the snake population decreases
Lastly the hawk population decreases
After the initial drop off, the populations begins to stabilize.

4. Rabbits are Diseased
Rabbit population decreases grass population increases
The snake and hawk population decrease
After 8 months, the populations stabilize (the grass stays higher than the rest)

5. Snakes are Diseased
Snake population decreases rabbit population increases
The hawk population decreases
The grass population decreases slower than the other two.

6. Hawks are Diseased
Hawk population decreases snake population increases.
Increase in snakes rabbit population decreases
rabbit population decreases grass population increases
All populations stabilize.
The hawk and rabbit population stay lower than the snake and grass population

7. Predator/Prey Storyboard
You will DO:
Identify the domino effect that will occur in an ecosystem if one trophic level changes
Create a five panel storyboard that includes pictures and descriptions to tell the story of a predator/prey relationship

8. DUE DATE
You will have class time today and time tomorrow to work on your storyboard
The final storyboard is due this FRIDAY February 24th.

9. Predator & Prey Storyboard
Lindsay Spears
Core 1
Predator & Prey Storyboard
Ecosystem: North American Forest
Producer: Grass
Primary Consumer: Rabbit
Secondary Consumer:
Snake:
Apex Predator: Hawk
Grass is wiped out due to a forest fire.
With less grass available, many rabbits starve. The rabbit population decreases.
With a smaller amount of prey, the snake population decreases.
The hawk population will also decrease due to lack of food.