ENV notes 10-16-08

ENV notes 10-16-08 - 10-16-08 ENV 25 Biodiversity...

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10-16-08 ENV 25 Biodiversity conversation The Poor Po’ouli Discovered by students on Maui in ’73. One of nearly 60 species of indigenous honeycreepers. 1980 census revealed 140 birds. ? Not an isolated event. 800 years ago there were 140 species of birds. Capt. James hook came 1778- 97 species remain. Today 71 indigenous species remain of these Rate of extinction is hundreds of times greater than it was a long time ago. Tropical forests have possibly half of terrestrial diversity of the world. We are losing roughly the size of Conn., and Mass. every year especially in the Amazon. Roads going through Peru and Brazil have disappeared irreversibly and very quickly. One acre has hundreds or thousands of plants, trees and animals. Habitat fragmentation We separate habitat from habitat. It is like islands for habitats. Yellowstone began to lose species once it was created. The surroundings of Yellowstone have been widely developed. Pollution
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This note was uploaded on 10/22/2008 for the course ENVIRON 25 01 taught by Professor Meyer during the Spring '08 term at Duke.

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ENV notes 10-16-08 - 10-16-08 ENV 25 Biodiversity...

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