1. Predator-Prey!
vs.

2. Key points of this activity:
•Ratios and Food Pyramids
•Competition
•Biomagnification
•Checks-and-balances
•Survival of the fittest and Adaptations

3. Ratios
• Sustainability
• Which ratio is best? Why?
• How does this tie in to pyramid
shape?

4. Competition
• Defined
• Among species = Predation
• Within species

5. Biomagnification
• California Condor and DDT
• How did it apply in our rabbit/coyote
game?

6. Checks and Balances
• Where have you heard this term
before?
• Apply it to Ecology and the
rabbits/coyotes.

7. Adaptation/Survival of Fittest
• Adaptation
• Natural Selection
• Evolution
• Know an example of adapting:
– to predators
– to competitors
– in symbiosis

8. Look it Up! (Get 2 examples of
each)
• Life and the Molecule: pp 394-397
• Time-Life Ecology: pp 110-115
• Time-Life Plants: pp 147-153
• Ecology text: pp 38-35
Mutualism Commensalism Parasitism

9. LINKS
Quick summary about Isle Royale
Isle Royale population study report