Changing Leaf Color of Different Tree Species

This topic submitted by Charles Arko, Jennifer White, Meghan Oellerich, Andrzej Czech, Julie Havens (Jewels851@aol.com) at 11:30 pm on 9/18/00. Additions were last made on Wednesday, May 7, 2014. Section: Campbell

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 then chart and graph our data based on our observations and research of the physical properties of these trees.

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

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
Co evolution", 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 coexistence of insects. A large portion of his article is discussing the strategies in which trees will produce brighter, stronger leaves.

www.state.ia.us/forestry/color.htm

The amount of pigments (which effects the color) in a tree depends on the particular tree, the soil acidity, and the minerals in the soil. Weather throughout the fall season has much do about the color in trees. Cool nights destroy chlorophyll while freezing temperatures inhabit the red pigment.

www.virtual.clemson.edu/groups/Fieldops/cgs/leaves.htm

This article explains the process by which the chlorophyll replacement rate in leaves slows down starting in the fall. Every tree's chlorophyll rate is different and that causes their leaves to change colors at all different points. Eventually, the leaf is pealed off from the branch and the green chlorophyll fades into different pigments that cause the bright colors.

http://aggie-horticulture.tamu.edu/talntplantanswers/trees/leafcolor.html

The changing color of leaves is not due to a colder climate, as many people believe, but rather to the shortening of the amount of time that the sun is out as the season progresses. Individual colors that the leaves may change are due to the chemical complexes in the tree and surrounding soil. Fallen leaves are not useless; in fact they enrich the soil, and help keep everything that grows in soil, such as trees, alive.

www.100000inns.com/fall_foliage/leaves_color.html

The article "Fall Foliage Guide,” describes the cycle of chlorophyll in a plant and how it relates to the changing of leaf colors. In certain autumn conditions leaves tend to produce different colors and also when the leaves are either exposed to sun or protected by shade. The remainder of the article described the leaf colors of various types of trees.

Next Article
Previous Article
Return to the Topic Menu


Here is a list of responses that have been posted to this Study...

IMPORTANT: Press the Browser Reload button to view the latest contribution.

Respond to this Submission!

IMPORTANT: For each Response, make sure the title of the response is different than previous titles shown above!

Response Title:
Author(s):

E-Mail:
Professor's Name (Choose either Cummins, Myers, Campbell, or Smith):
Optional: For Further Info on this Topic, Check out this WWW Site:
Response Text:



Article complete. Click HERE to return to the Natural Systems Menu.

Visit the rest of the site!

 Weather & Earth Science Resources

|Weather & Environmental Sites | Radar & Severe Weather |Earth Science Resources | Astronomy| Global Change |

Tropical Ecosystem Courses

Images: Tropical Marine Ecology of the Florida Keys, Everglades, and San Salvador, Bahamas

Images: Tropical Ecosystems of Costa Rica

2000 Syllabus:Tropical Ecosystems of Costa Rica

2000 Syllabus :Tropical Marine Ecology of the Florida Keys, Everglades, & San Salvador, Bahamas

 Tools & Other Stuff

Necessities: Macintosh Resources | Search Engines | Library Resources | Server Stats |