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Predator-prey interactions are among the most familiar and important in ecology, and they are also fraught with common misconceptions for students and the lay public. The notion of potential indirect impacts of predator on prey has not occurred to most students, nor has the idea of trophic cascades. This Issue uses the example of wolf extirpation and restoration in the Greater Yellowstone region to address the nature of trophic interactions, both direct and indirect.
Associated files
Format
Resource Group TIEE
Resource Group Link https://ecoed.esa.org/index.php?P=SearchResults&F46=TIEE
Primary or BEN resource type
Discipline Specific Core Concepts
Life science discipline (subject)
Keywords predation, trophic cascades, keystone species, predator control, predation risk, prey behavior, TIEE, Yellowstone, wolves, elk, willows
Audience
Intended End User Role
Language
Educational Language
Pedagogical Use Category
Pedagogical Use Description In this issue, students will study figures and generate hypotheses about why woody vegetation recruitment declined in Yellowstone National Park. Then, through a progressive disclosure approach, they will be shown data to help refute or support various hypotheses and finally construct a detailed food web concept map showing various trophic level interactions in the Yellowstone ecosystem, allowing them to see first hand how trophic cascades can structure ecosystems.
Aggregation Level
Structure
Url http://tiee.esa.org/vol/v6/figure_sets/trophic_cascades/abstract.html
Full Name of Primary Author Cynthia Dott
Primary Author Controlled Name
Primary Author Affiliation Fort Lewis College
Primary Author email N/A
Added By Id
  • educationintern
Rights Author retains copyright
License
Publisher
Review type
Drought and Water Ecosystem Services Collection Off
Conservation Targets Under Global Change Collection Off
Big Data Collection Off
Editors Choice No
Resource Status
Date Of Record Submission 2009-01-01
I Agree to EcoEdDL's Copyright Policy & Terms of Use No
Date Of Record Release 2011-03-09 12:17:47
Last Modified By Id
  • educationintern
Date Last Modified 2018-07-25 15:45:26
Release Flag Published

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