species+loss+and+boidiversity

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the diversity of an ecosytem is directly related to the ecosystem's stablity and efficiency. When a species is lost, the abilty of the ecoysytem to remain stable is lessened and it's efficiency is depleted. An example of this is in the western US. Humans didnt like the wild coyotes that were existant, so they sent up traps called "coyote-getters". THese traps composed of a piece of meat, that when the wolf pulled away, it would get spread with cyanide in the face. This cut off so many coyotes that the ecosystem crumbled because there were no predattors to pray on the rat populations. When the human finnally realized how unstable this ecosystem became, they had to take measures to change it. They had to import coyotes to re-establish the efficiency and stablility of the ecosystem. http://findarticles.com/p/articles/mi_hb3543/is_200212/ai_n8358457