BIODIVERSITY - The Current Mass Extinction: Human beings...

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The Current Mass Extinction: Human beings are currently causing the greatest mass extinction of species since the extinction of the dinosaurs 65 million years ago. If present trends continue one half of all species of life on
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Various anthropogenic impacts result in reduced biodiversity on Earth. Why does this matter? To answer this question we can consider: The Moral Issue or The Ecological Issue What we will cover in this class.
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Diversity measures richness and equitability (relative abundance of each species) Genetic Diversity Ecosystem Diversity Species Diversity 1.7 Million Species
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Diversity measures richness and equitability (relative abundance of each species) Simpson’s Diversity Index : D = Σ i = 1 S P i 2 1 proportion of “i”th species of total biomass # of individuals or biomass
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Calculate D for each of these communities. Does a high or low D mean greater “diversity”?
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Most people refer to species richness RATHER THAN biodiversity. RICHNESS is simply the number of different
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This note was uploaded on 04/07/2008 for the course BIO 180 taught by Professor Beuning during the Fall '07 term at Wisc Eau Claire.

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BIODIVERSITY - The Current Mass Extinction: Human beings...

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