1. Human Impact and Conservation

2. Hey Mom!! That’s me!!!!!!!!!!!!!!

3. Human Impact Humans now live in almost every kind of ecosystem on Earth. … and pop growth is a big deal

4. Edge effect

5. Renewable vs. Nonrenewable resources Renewable resources can be replaced at the same rate at which they are consumed. However, can still be used up if it is used faster than it can be renewed. Nonrenewable resources resources that form slower than they are used. Most of our energy today comes from fossil fuels -- nonrenewable energy formed from remains of organisms that lived long ago.

6. Pollution 1) Air Pollution 2) Water Pollution 3) Soil Pollution

7. 1) Air Pollution causes respiratory problems for people, Causes: » Acid Rain » Ozone » Global Warming

8. Acid Rain Sulfur and nitrogen compounds react with water in air to form sulfuric acid and nitric acid Acid rain removes calcium, potassium, from soil, depriving plants of their nutrients

9. Ozone protects life on Earth from the sun’s UV rays The ozone layer has been damaged by chlorofluorocarbons (CFCs). CFCs are chemicals in: refrigerators air conditioners Aerosol cans.

10. Most scientists think that this increase in temperatures is caused by an increase in CO 2 …. From burning of fossil fuels Global Warming Earth warms b/c greenhouse gases(CO 2 and water vapor) trap heat.

11. Global Warming the gradual increase in the average global temperature A continued increase in global temperatures has the potential to cause a number of serious environmental problems

13. 2) Water Pollution

14. Eutrophication -- fertilizers /pesticides run off--- inc water nutrients---algae blooms– delete oxygen---fish die  livestock farms industrial waste oil runoff from roads, unlined landfills. Leaky septic tanks Percolation– gets to groundwater healthyunhealthy

15. soil erosion (process where Earth’s surface gets worn away, transported from one place to another by wind, gravity, or water) – destroys fertile soil that we need in order to produce food. – Roots help hold soil together / protect from erosion. Many farming methods -- lead to soil erosion – by loosening topsoil /removing plants – Great Dust Bowl 3) Soil Pollution

16. Biological magnification the increasing concentration of toxic substances in organisms as trophic levels increase in food chain mercury

17. Foreign Species Threats Biodiversity intentionally or unintentionally introduced to a new habitat --- can become a factor in the extinction of natives species. Hawaii – zoo only

18. preserving/ renewing natural resources so they’ll be around Conservation

19. Decrease CO 2 emissions Decrease sulfur and nitrogen emissions Alternate energy Decrease CFC production Air conservation

20. Contain contaminated runoff Decrease amount of water use in residential /commercial buildings Water Conservation

21. Terracing: change a steep field into a series of flat steps Crop rotation Contour plowing: rows are plowed in curves along hills instead of in straight lines-- act as a series of dams- prevents water from eroding the soil. Soil Conservation Soil Conservation

22. Adding natural predators to a degraded ecosystem is called Ladybugs help control aphid populations. Biological Augmentation