This topic submitted by at 7:31 pm on 9/18/00. Additions were last made on Wednesday, May 7, 2014. Section: Cummins

Problem: What makes the leaves of different tree species change color over time?

Procedure: We will observe the color pattern and physical differences of 3-5 separate species of trees every 3-4 days. We will make charts and graphs to display our data based on our observations and research.

Research: We will research the physical make-up of the leaves and root structure of each type of tree.

Articles:

http://cite.ohiolink.edu/isi/links/LinkOut.cgi?PID=Orion&origin=http%3A//cite.ohiolink.edu/isi/CIW.cgi%3F112476_4DA471F2%26Func%3DAbstract%26doc%3D2/10%26PR%3D2/10&type=frame&dest=http%3A%2F%2Fjournals.ohiolink.edu%2Fcgi-bin%2Fscigate.cgi%3Fkey%3D%2F00225193%2Fv205i0004%2F625_tooacbc

The article written by March Archetti, "The Origins of Autumn Colors by
Coevolution", is about the reasons as to why leaves change color. He
mentions three main reasons: the pigments in the leaves change their
structure, the synthesis of new pigments in autumn, and the soexistence of
insects. A large portion of his article is dicussing the strategies in
which trees will produce brighter, stronger leaves.

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