Predator & Prey

Predator & PreyLast update 4/18/12You willKnow the correlation between Predator & PreyBe able to graph and understand the relationship between Predator & Prey

Nature, You Scary!

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

Background:Background: Canadian Lynx and Snowshoe Hares

Predator species is totally dependent on a single prey species as its only food supplyThe prey species has an unlimited food supplyThere is no threat to the prey other than the specific predator.HypothesisIf 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.MaterialsJust you! Follow the rules.Try!

Procedure:Like Sharks and MinnowsBut, we keep track of the data! Follow the RulesTRY!

Activity RulesActivity Rules:Each round represents one year3 Hare to support 1 Lynx. If you dont tag out at least 3 hares, go to the resurrection lineEvery 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.

Data TableRnd01234567891011LynxHarePredator Prey Activity Data TableDay 1: End here!Data Analysis: GraphDay 2: Start here!Thousands Populations of lynx vs. hareReal World

(Odum, Fundamentals of Ecology, Saunders, 1953)Carrying CapacityWhat 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 & abiotic Limiting factors) can support.Lesson of the KaibabDeer population from 1905 to 1924YearPopuation19054,00019109,000191525,000192065,0001924100,000Deer population from 1925 to 1939192560,000192640,000192737,000192835,000192930,000193025,000193120,000193518,000193910,000Conclusion QuestionsIn your Lab Book!Describe the relationship between the variables on your graphHow 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? Data Table Results!Rnd01234567891011Lynx512323Hare2422212719161st PeriodData Table Results!Rnd01234567891011Lynx43321112121Hare15121214141919181615143rd PeriodData Table Results!Rnd01234567891011Lynx4564434441Hare2011657797234th PeriodData Table Results!Rnd01234567891011Lynx5786511212Hare30191451381630265th PeriodData Table Results!Rnd01234567891011Lynx4334657Hare19202120812126th Period