1. Global & Local Eco Issues

2. Biological Diversity ~2 million species identified on Earth
~8 million species to find
~1 billion extinct species
EX: Mycena luxaeterna (eternal light mushroom)

3. Biosphere Services Ecosystems provide ~$33 trillion/year in services
Purification of air and water
Reduction of severity of natural disasters
Generation of fertile soils
Detoxification of waste
Pollination of crops

4. Problem: Biodiversity Crisis
More species are going extinct now than at any point within the past 65 million years

5. Planet Earth: Human Population

6. 1. Habitat Destruction Occurs when humans destroy native habitats!
Solution: restore and conserve natural areas

7. 2. Overharvesting
Occurs when wild organisms are harvested at a rate greater than the population can replenish
Solution: practice sustainability

8. 3. Invasive species
Occurs when species are moved by humans and thrive at the expense of other organisms
Solution: Plant native species

9. 4. Pollution Occurs when contaminants enter the environment
Solution: EPA guidelines

10. 5. Ozone Depletion
Occurs when chlorofluorocarbons break the chemical bonds of ozone
Solution: Global ban of CFC’s

11. 6. Global Climate Change CO2(g) & global temperatures are increasing
Polar ice caps are melting
Sea levels are rising
Solution: alternative energy

12. Overview of Human Impact
Humans use ecosystem services to live
The human population rose exponentially
Humans have altered natural biogeochemical cycles
Humans must protect these biogeochemical cycles upon which our survival is dependent