New search
download case
  • Overview
  • Teaching Notes
  • Answer Key
  • Comments/Replies

You Poured it Where?

A Case Study in Invasive Species



Author:

Nancy M. Boury
Department of Animal Science
Iowa State University
nan1@iastate.edu

Abstract:

This "clicker case" focuses on the invasive aquarium strain of Caulerpa taxifolia as a way of introducing 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. 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 "clicker questions." The case is suitable for introductory biology and ecology courses.

Objectives:
  • Identify traits that enable a species to become invasive.
  • Explain how the activities of humans have contributed to the spread of invasive species.
  • Describe how a rapid, multifaceted approach is required to limit the spread of invasive species.
Keywords: Invasive species; exotic species; introduced species; algae; caulerpa; Caulerpa taxifolia
Topical Area: N/A
Educational Level: High school, Undergraduate lower division
Formats: PDF, PowerPoint
Type/Method: Clicker, Interrupted
Language: English
Subject Headings: Biology (General)   Ecology   Environmental Science   Botany / Plant Science  
Date Posted: 03/22/10
Date Modified: N/A
Copyright: Copyright held by the National Center for Case Study Teaching in Science, University at Buffalo, State University of New York. Please see our usage guidelines, which outline our policy concerning permissible reproduction of this work.

Teaching Notes


Case teaching notes are password-protected and access to them is limited to paid subscribed instructors. To become a paid subscriber, begin the process by registering here.

Teaching notes are intended to help teachers select and adopt a case. They typically include a summary of the case, teaching objectives, information about the intended audience, details about how the case may be taught, and a list of references and resources.

  Download Teaching Notes

Answer Key


Answer keys for the cases in our collection are password-protected and access to them is limited to paid subscribed instructors. To become a paid subscriber, begin the process by registering here.


  Get Answer Key
Where is the article from the NY Times for this case, "You Poured it Where?"


Tom Savage
Science

Flat Rock, North Carolina
tsavage@henderson.k12.nc.us
4/23/2013
Response to T. Savage's Question: The URL has changed for accessing this article from the New York Times website. We searched it in Google and found its new location. It is now online at: http://www.nytimes.com/1997/08/16/world/a-delicate-pacific-seaweed-is-now-a-monster-of-the-deep.html Hopefully it won't change again any time soon, but it is usually possible by searching the title of a news story like this one in Google to find its new location.


Editor
National Center for Case Study Teaching in Science
University at Buffalo
Buffalo, New York

4/23/2013
A number of people have written in to ask where the handout for students is for this case. It is at the very end of the Teaching Notes, after the references, and begins on its own separate page (pages 9 and 10). It is formatted for printing.


Editor
National Center for Case Study Teaching in Science
University at Buffalo
Buffalo, New York

10/17/2013



Name:
Email:
Department:
Institution:
City State:
Comments:
security code
Enter Security Code: