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HomeWork
HomeWork
HomeWork
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HomeWork
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HomeWork

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  • 1. Oceans Health
  • 2. Vocabulary <ul><li>Fisheries </li></ul><ul><li>Fish Stocks </li></ul><ul><li>Collapse </li></ul><ul><li>Overfishing </li></ul><ul><li>Harvesting </li></ul><ul><li>Solutions </li></ul><ul><li>Endangered </li></ul><ul><li>Threatened </li></ul><ul><li>Address a problem </li></ul><ul><li>Migrate </li></ul><ul><li>Antibiotic-resistant </li></ul><ul><li>Purse Seiner </li></ul><ul><li>Biodiversity </li></ul><ul><li>Component </li></ul><ul><li>Oil Spill </li></ul><ul><li>Fertile </li></ul>
  • 3. Overfishing <ul><li>“Many marine ecologists think that the biggest single threat to marine ecosystems today is overfishing. Our appetite for fish is exceeding the oceans' ecological limits with devastating impacts on marine ecosystems. Scientists are warning that overfishing results in profound changes in our oceans, perhaps changing them forever. Not to mention our dinner plates, which in future may only feature fish and chips as a rare and expensive delicacy.” </li></ul>
  • 4. Health Check <ul><li>Predators indicator of ecosystem health </li></ul><ul><li>Since 1950's 90% of large fish have disappeared </li></ul><ul><li>Including tuna, swordfish, marlin, cod, halibut, skate, and flounder </li></ul><ul><li>Biodiversity changes ex. Jellyfish </li></ul>
  • 5. Collapse of Fisheries <ul><li>1992 collapse of Cod Fisheries = 40000 jobs </li></ul><ul><li>3 substantial harvesting areas have collapsed or will </li></ul><ul><li>Fisheries solution has been the Pacific </li></ul>
  • 6. Pacific Threatened <ul><li>Global depletion of other waters </li></ul><ul><li>Fishing Fleets have migrated to the Pacific </li></ul><ul><li>Original problem not addressed </li></ul><ul><li>40% of GDP for Pacific Island States </li></ul><ul><li>Collapse of 75% of locations </li></ul>
  • 7. Facts <ul><li>One third of fish caught are thrown back dead </li></ul><ul><li>One third of fish caught become animal feed </li></ul><ul><li>The largest trawler =12 jumbo jets </li></ul><ul><li>50% of the fish are caught by 1% of the boats </li></ul>
  • 8. Purse Seiner <ul><li>Responsible for 70% of fishing </li></ul><ul><li>Largest can hold 12 jumbo jets </li></ul><ul><li>Indiscriminate in catch </li></ul>
  • 9. Purse Seiner
  • 10. Fish Farming <ul><li>“From the highlands of Scotland to the Pacific waters of Chile, salmon faming is big business. In Chile alone, the export revenue generated from salmon farming now exceeds US$1 billion each year, a figure that is expected to double in the next few years. Supporters of industrial fish farming have long asserted that this so-called 'blue revolution' is both cheap and a sustainable alternative to the consumption of highly depleted wild-caught fish species” </li></ul>
  • 11. Fish Farming <ul><li>30% of all fish protien consumed in the world </li></ul><ul><li>Destroys enviornments </li></ul><ul><li>Leads to new diseases </li></ul><ul><li>Risk of breeding with native populations </li></ul>
  • 12. Pollution <ul><li>“By the year 2050 it is estimated that the world's population could have increased to around 12 billion. Of these, some 60 percent will live within 60km of the sea. The agricultural and industrial activities required to support this population will increase the already significant pressures on fertile coastal areas.” </li></ul>
  • 13. Sorces of Pollution <ul><li>Oil spills minor component </li></ul><ul><li>Others include domestic sewage, industrial discharges, leakages from waste tips, urban and industrial run-off, accidents, spillage, explosions, sea dumping operations, oil production, mining, agriculture nutrients and pesticides, waste heat sources, and radioactive discharges </li></ul>
  • 14. Creeping Dead Zones <ul><li>Cycle: </li></ul><ul><ul><li>Nutrient Pollution </li></ul></ul><ul><ul><li>Algae Bloom </li></ul></ul><ul><ul><li>Death and Decay </li></ul></ul><ul><ul><li>Oxygen depletion </li></ul></ul>
  • 15. Discussion <ul><li>What is overfishing? </li></ul><ul><li>Do you feel that this is a problem? </li></ul><ul><li>What solutions can you think of? </li></ul><ul><li>What steps can you personally take to change the current situation? </li></ul><ul><li>Do feel that Taiwan is contributing to the current situation? </li></ul>
  • 16. Discussion <ul><li>As populations grow so do their aggergated demand for food. Is there a more sustainable solution than fishing? </li></ul><ul><li>What is the future of Fish Farming? </li></ul><ul><li>Do you feel this can become a safer practice? </li></ul><ul><li>Is fish farming a big industry in Taiwan? </li></ul>
  • 17. Discussion <ul><li>Are you worried about ocean pollution getting into your diet? </li></ul><ul><li>Do you think ocean pollution is a problem? </li></ul><ul><li>What are some sollutions to ocean pollution? </li></ul><ul><li>What do you think Tawian's contribution to ocean pollution is? </li></ul>
  • 18. Sources <ul><li>Greenpeace http://oceans.greenpeace.org/en/our-oceans/overfishing </li></ul><ul><li>FIGIS- Gear Fact Sheet www.fao.org </li></ul>

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