Extinction

01/02/2003


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Table of Contents

Extinction

On one level, extinction is the norm.

The fossil record shows episodes of explosive speciation alternating with massive extinctions.

Recent history indicates extinction caused by human activities. I. Overhunting & poaching

Effects of human activities. II. Habitat destruction

Effects of human activities. III. Poisoning - accidental and deliberate

Effects of human activities. IV. Importation or invasion of exotic species - deliberate and accidental

In all, 20,897 species are extinct, imperiled, or vulnerable in the United States

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Solutions: I. Zoos as Noah’s Ark

Solutions: II. Restoration of habitat and/or establishment of preserves.

To do this right, large tracts of land are required.

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Study of Island Biogeography

Solutions: III. Remove the financial incentive to hunt endangered animals.

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Author: Stan Eisen

Email: seisen

Home Page: http://www.cbu.edu/~seisen/

Other information:
Problems of extinction & examples -- possible solutions