Biodiversity

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Biodiversity

  1. 1. Biodiversity Chapter 5.1
  2. 2. Where is it found? <ul><li>EVERYWHERE! </li></ul><ul><li>Biodiversity INCREASES as you get closer to the equator </li></ul><ul><li>Riches environments for diversity = warm places </li></ul><ul><ul><li>ex: tropical rain forests </li></ul></ul><ul><ul><li>ex: coral reefs </li></ul></ul><ul><ul><li>ex: large tropical lakes </li></ul></ul>
  3. 3. RAINFOREST
  4. 4. CORAL REEF
  5. 5. 1960 Experiment Larger the island, the more habitat and species it had This implies that the number of species depends on number of habitats
  6. 6. Importance of Biodiversity
  7. 7. Importance to nature Populations are adapted to live together in communities. They depend on one another.
  8. 8. Biodiversity brings stability to an ecosystem Otherwise, entire plants could be wiped out by pests
  9. 9. Importance to People
  10. 10. Loss of Biodiversity
  11. 11. Extinction Dodo Bird Passenger Pigeon
  12. 12. Endangered Species
  13. 13. Help Me!
  14. 14. Threatened Species
  15. 15. Threats to Biodiversity
  16. 16. Habitat Loss One of the biggest reasons for decline in biodiversity Dynamite fishing (imagine on grand scale) Disease and changes in water temp can damage or kill coral
  17. 17. Habitat Fragmentation
  18. 18. It presents problems for organisms that need large areas to gather food or find mates
  19. 19. Smaller the fragments  the less biodiversity
  20. 20. <ul><ul><li>It contributes to: </li></ul></ul><ul><ul><ul><li>increased extinction of local species </li></ul></ul></ul><ul><ul><ul><li>disruption of ecological processes </li></ul></ul></ul><ul><ul><ul><li>new opportunities for invasion by introduced or exotic species </li></ul></ul></ul><ul><ul><ul><li>increased risk of fire </li></ul></ul></ul><ul><ul><ul><li>changes in local climate </li></ul></ul></ul>
  21. 21. Edge Effect Edges tend to have great biodiversity because different habitats with different species are brought together
  22. 22. Habitat Degradation
  23. 23. Air Pollution Water Pollution Land Pollution 3 Types of Pollution
  24. 24. Acid Precipitation
  25. 25. Effects of Acid Rain
  26. 26. Ozone Hole Ozone = O 3 CFC’s = chlorofluorocarbons Began opening because CFC’s were emitted into the air through just about everything (hair spray, refrigerators, paint spray cans, etc…)
  27. 27. Introduction of Exotic Species

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