This "clicker case" focuses on the food web of the riparian bird …
This "clicker case" focuses on the food web of the riparian bird communities of the Greater Yellowstone ecosystemand how community structure and productivity may be influenced by top-down mechanisms, resulting in a trophic cascade. As students examine the food web and non-feeding interactions among the community members, they uncover the effects of herbivore densities on songbird populations and gain an appreciation for species interactions and impacts in a biological community. The case is presented in class using PowerPoint slides (~2.6MB) that are punctuated by multiple-choice questions which students answer using clickers, though the case could be adapted for use without these technologies. Designed for an introductory biology course taken primarily by freshmen and sophomores to fulfill a general education requirement, it could also be used in an introductory course for biology majors.
In this analysis case, students study predator-prey dynamics in the Isle Royale …
In this analysis case, students study predator-prey dynamics in the Isle Royale National Park ecosystem drawing on data and findings from the article "Wolves, Moose, and Tree Rings on Isle Royale" by B.E. McLaren and R.O. Peterson published in 1994 in Science magazine. The case was developed for a sophomore ecology class. It could also be used in environmental science courses.
This case focuses on the invasive aquarium strain of Caulerpa taxifolia to …
This case focuses on the invasive aquarium strain of Caulerpa taxifolia to introduce students to issues about invasive species. Specifically, students learn to identify some of the traits that make a species potentially invasive and explore how individual decisions can have big impacts on the ecosystem. The case uses a story/handout that sets the stage combined with a New York Times article for further background. The students are then guided through a series of PowerPoint slides (5 MB) in class that provide additional information, prompts for small group discussion, and multiple-choice Ňclicker" questions. The case is suitable for introductory biology and ecology courses.
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