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Death Of Coral Reefs
Death Of Coral Reefs
Death Of Coral Reefs
Death Of Coral Reefs
Death Of Coral Reefs
Death Of Coral Reefs
Death Of Coral Reefs
Death Of Coral Reefs
Death Of Coral Reefs
Death Of Coral Reefs
Death Of Coral Reefs
Death Of Coral Reefs
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Death Of Coral Reefs

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Transcript

  • 1. Power Point by Sharon and Rita
  • 2. Pretty isn’t it?
  • 3. Not so much anymore
  • 4. What are coral reefs?
    • coral reefs have been around us for more than 400 million years
    • Coral are extremely ancient animals that evolved into reef-building forms over the last 25 million years
    • There are two main types of coral:
      • The hard coral, the major reef-building species
      • The soft coral, such as sea whips and sea fans.
  • 5. How are they made?
    • They are aragonite structures produced by living organisms.
    • coral reefs are formed by the aggregation of the calcium carbonate exoskeletons of corals
  • 6. What are the threats?
    • Human activity is one of the greatest threats.
    • Other threats are:
      • Global warming
      • coral mining
      • pollution
      • over-fishing
      • blast fishing
  • 7. The Threat of Human Destruction
    • Coral is damaged by anchors
    • Blast fishing will kill coral reefs
    • This is due to inappropriate fishing techniques
  • 8. The Threat of Seaweed
    • Corals overgrown by seaweed
    • Caused by:
      • Over-fertilization
      • Sewage
      • Agriculture
  • 9. The Threat of Coral Bleaching
    • Coral turns white
    • This is due to:
      • High temperatures
      • Climate Change
  • 10. What happens to dead reefs?
    • They become white in colour and collapse
    • It deprives fish of food
    • Fish diversity is cut in half
  • 11. How to Help
    • Install Moorings
    • Remove nutrients from sewage
    • More efficient ways to fertilize
    • Reduce green house gasses
  • 12. Thank you for watching

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