Chapter 11 - Chapter 11 Biodiversity Major Questions 1 What...

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Chapter 11, Biodiversity Major Questions: 1. What are the benefits of biodiversity? Are there other reasons to value biodiversity? 2. What is Biodiversity & how is it ‘measured’ 3. What is the history of species extinctions & what is happening now? 4. What causes diversity loss & extinction now (HIPPO)? 5. What are some approaches to addressing biodiversity losses? 6. What laws are important for biodiversity protection & how do they work? What is Biodiversity ? Genetic Diversity - Measures variety of different versions of same genes. Species Diversity - Measures number of different kinds of organisms within a community. Ecological Diversity - Measures richness and complexity of a community Species Richness - Total number of species in a community. Species Evenness - Relative abundance of individuals within each species. Species Definition Reproductive Isolation Genetic Species Concept - DNA sequencing Evolutionary Species Concept How many species Currently 1.5 million species identified. Estimates range between 3-50 million. May be 30 million insect species.
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