Lab: Isle Royale
This popular laboratory explores basic population biology concepts including exponential and logistic growth and carrying capacity. It is based on the textbook example of a predator-prey system involving wolves and moose on an island in Lake Superior. Students start out by characterizing the growth of a colonizing population of moose in the absence of predators. Next they introduce wolves, and study the resulting predator-prey cycles. Do predators increase or decrease the health of their prey populations? Students investigate this question by sampling the energy stores of moose with and without wolves present. Finally, they try changing the plant growth rate to see how primary productivity influences population dynamics.
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Key Concepts: Carrying Capacity; Population growth; Predator-prey dynamics
Courses: Ecology; Intro Bio: Eco/Evo/Genetics; Intro Bio: Non-majors; Population Biology
"We plan to continue to use EcoBeaker software in our Biology 101 labs next year. Student and TA feedback was very positive on both these labs [Isle Royale and Nutrient Pollution]."
Bruce Fall, University of Minnesota, 1,000 Student Introductory Biology Course
"Our experience with [the Isle Royale and Darwinian Snails labs] last Spring in our majors introductory course was excellent."
Dr. Lawrence Blumer, Morehouse College
"Our intro ecology course did the new Isle Royale lab this week and all of the instructors agreed that the new version is GREAT - so thanks for the great educational tool!!!! We all love how you worked global climate change into the new version and we also love the t-test at the end."
Billy Flint, James Madison University
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