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Predator & Prey

Predator & Prey. Last update 4/18/12. You will…. Know the correlation between Predator & Prey Be able to graph and understand the relationship between Predator & Prey. Nature, You Scary!. Predator/Prey Activity Worksheet!. Directions:

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Predator & Prey

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  1. Predator & Prey Last update 4/18/12

  2. You will… • Know the correlation between Predator & Prey • Be able to graph and understand the relationship between Predator & Prey

  3. Nature, You Scary!

  4. Predator/Prey ActivityWorksheet! • Directions: • Purpose: To simulate the predator/prey relationship

  5. Background: • Background: Canadian Lynx and Snowshoe Hares • Predator species is totally dependent on a single prey species as its only food supply • The prey species has an unlimited food supply • There is no threat to the prey other than the specific predator.

  6. Hypothesis • If the Lynx kill too many Hare, then the population of Lynx decrease. This is because the two populations are dependent on each other. • If the population of the Lynx is low, then the Hare population will increase. This is because the two populations are dependent on each other.

  7. Materials • Just you! • Follow the rules. • Try!

  8. Procedure: • Like Sharks and Minnows • But, we keep track of the data! • Follow the Rules • TRY!

  9. Activity Rules • Activity Rules: • Each round represents one year • 3 Hare to support 1 Lynx. If you don’t tag out at least 3 hares, go to the resurrection line • Every two lynx will have one offspring every year. • Hare: 2-Handed Tag by Lynx, back of the resurrection line! One-hand tag you hop until you get tagged again! • Every 2 Hare will have 3 offspring each year. • Resurrection Line should be a straight line off to one side of the field. The dead will enter on one side, and be resurrected on the other.

  10. Data Table Predator Prey Activity Data Table Day 1: End here!

  11. Day 2: Start here! Data Analysis: Graph Populations of lynx vs. hare Thousands

  12. Real World (Odum, Fundamentals of Ecology, Saunders, 1953)

  13. Carrying Capacity • What does carrying capacity mean? Write it on your White board in your own words. • Discuss as a table. • Carrying Capacity- The maximum number of organisms that the ecosystem (due to biotic & abioticLimiting factors) can support.

  14. Lesson of the Kaibab Deer population from 1905 to 1924 Deer population from 1925 to 1939

  15. Conclusion QuestionsIn your Lab Book! • Describe the relationship between the variables on your graph • How close is your graph to the real graph of Lynx and Hare? Why is it close, or why is it off? • What is the lesson of the Kaibab?

  16. Data Table – Results! 1st Period

  17. Data Table – Results! 3rd Period

  18. Data Table – Results! 4th Period

  19. Data Table – Results! 5th Period

  20. Data Table – Results! 6th Period

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