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 E.O.Wilson Slide Show: Sixth Page


The Relation Between Biodiversity and Habitat Size

"As you reduce the area of an ecosystem, you reduce the number of species in that ecosystem, as seen dramatically in these first two panels showing natural islands of diminishing size.

Let us get rid of immediately of the notion that all you have to do is keep a little patch of the old growth somewhere, and then you can do whatever you want with the rest. That is a very dangerous and false notion.

I have used the example of the islands in the West Indies, and that is the one to be applied to the natural forest reserves on the land as well. As you reduce the area, the number of species, in this case amphibians and reptiles, that can live in that reduced area indefinitely drops. In fact, the number of species drops rather precipitously by roughly the following rule. A 90% reduction in the area for these organisms to live results in a long term decrease of about 50% in the number of species."

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Dr. E.O. Wilson

Slide show, delivered by
Edward O. Wilson, Ph.D.
April 28, 1998
U.S. Capitol
Washington, DC

"It is critically important the Act to Save America's Forests be passed into law as soon as possible. The Act is essential to protect the forests and biodiversity of America, and will prevent countless plants and animal species from going extinct."

Listen to Radio Interview
with Dr. E.O. Wilson

Biography Of
Dr. E.O. Wilson

Read E.O. Wilson Letter to President Clinton to Create Siskiyou Wild River National Monument

Read E.O. Wilson, Jane Goodall Letter to Protect Most Biodiverse Forest in the World, Yasuni National Park in Ecuador

Dr. Jane Goodall visited Congress to support the Act to Save America's Forests too!

Dr. Jane Goodall Lecture
Read transcript, pictures
See streaming video


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