[Ecoed] competition btw organisms

[Liane Cochran-Stafira]

Kristen,
1.  How about trick-or-treaters on Halloween.  The earlier kids get 
more candy than the later ones.
2.  Nectar feeders and their flower resources.  Butterflies vs. bees: 
the longer proboscis wins out.
3.  Below ground competition for resources in plants.

Liane Cochran-Stafira

At 02:25 PM 4/30/2007, Kristen Lennon wrote:
>Hi,
>
>I am working on collecting examples of phenomena that I will provide to
>teachers to demonstrate specific ecological concepts to middle school
>students (grades 6-8). Currently, we are talking about competition
>between organisms for such things as food, water, air, space and shelter
>(including nesting sites). While it is relatively easy to find examples
>of what students will think of as "classic" competition that involves
>direct, interactive competition between organisms (usually with visible
>conflict), we are trying to find examples of competition that do not
>involve this contact. For example exploitative competition in which one
>organism uses (or exploits) a resource more quickly or efficiently than
>another. This is much harder to find good examples of that can be used
>with children of this age. I would be grateful for any ideas that you
>may have - either examples that I can use or strategies for introducing
>students to this concept.
>
>Thanks again for your help.
>
>Best,
>Kristen
>
>Kristen A. Lennon, Ph.D.
>Research Associate
>Project 2061
>American Association for the Advancement of Science
>1200 New York Ave., NW
>Washington, DC 20005 USA
>
>
>Tel:202-326-7032
>E-mail: klennon at aaas.org
>http://project2061.aaas.org
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***************************
Liane Cochran-Stafira, Ph.D.
Associate Professor
Department of Biology
Saint Xavier University
3700 West 103rd Street
Chicago, Illinois  60655

phone:  773-298-3514
fax:    773-298-3536
email:  cochran at sxu.edu
http://faculty.sxu.edu/~cochran/


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