The document defines biodiversity as the variety of species, ecosystems, and genes within a region. It discusses measuring biodiversity through alpha, beta, and gamma diversity and examines threats such as habitat destruction, invasive species, pollution, population growth, and overhunting. While 1/8 of plant species face extinction and 140,000 species are lost each year, biodiversity provides benefits like rubber, oxygen, water, and oil. Maintaining biodiversity also increases ecosystem productivity and resilience to disasters.

1. Biodiversity Professor X

2. What is Biodiversity? Different Species Different Biomes Different Ecosystems

3. Types of Diversity Genetic Species Ecosystem

4. How to Measure Biodiversity Alpha Diversity Diversity within a particular area, community, or ecosystem Measured By: Counting the number of species in an area Beta Diversity Species diversity between ecosystems Comparing the number of species unique to each ecosystem Gamma Diversity Overall diversity for different ecosystems within a region Multiplying the Alpha and Beta diversities in a region

5. Concerns 1/8of all plant species are on the verge of extinction 140,000species lost in one year

6. Threats Habitat Destruction Invasive Species Pollution Population Overkill

7. Benefits Rubber Oxygen Water Oil

8. Significance “Biodiversity boosts ecosystem productivity… [and] enables the ecosystem to prevent and recover from a variety of disasters.” www.globalissues.org