This document discusses the key concepts of a predator-prey activity including ratios and food pyramids, competition both between and within species, biomagnification, checks and balances in ecology, and adaptations for survival. It provides examples to look up about mutualism, commensalism, parasitism, and directs the reader to resources about the Isle Royale wolf-moose population study.

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