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Understanding Ocean Productivity and Environmental Impact on Marine Life

This document explores the intricacies of ocean productivity, the role of phytoplankton as primary producers, and the significance of marine food chains. It highlights the alarming pollution of oceans witnessed by adventurers like Thor Heyerdahl and Jacques Cousteau, who became passionate environmentalists due to their experiences. The document also discusses the potential effects of climate change, such as the rising sea levels from Antarctic ice shelf detachment. It underscores the delicate balance within marine ecosystems and the challenges they face from human activities.

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Understanding Ocean Productivity and Environmental Impact on Marine Life

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  1. http://life.uiuc.edu/animalbiology/105/ ID: eee105 Password: prAIRie Update

  2. http://life.uiuc.edu/animalbiology/105/ ID: eee105 Password: prAIRie Update Proposal was to mandate 36 mpg by 2015 For 22 years average has been 24 mpg 27.5 mpg for sedans 20.7 mpg for SUV’s

  3. Update

  4. Update

  5. Update

  6. Update

  7. Antarctica This was an ice shelf in East Antarctica

  8. Antarctica West Antarctica rests on deep bedrock If it detaches, sea level will rise 5 - 6 meters

  9. Update

  10. Update

  11. http://life.uiuc.edu/animalbiology/105/ ID: eee105 Password: prAIRie Oceans

  12. Oceans • Weather generator • Transport surface : Voyages

  13. Ancient Seafarers

  14. Ancient Seafarers • Austronesian mariners

  15. Ancient Seafarers

  16. Ancient Seafarers • Austronesian mariners

  17. Oceans The Kon-Tiki Expedition Thor Heyerdahl

  18. Heyerdahl has seen the pollution of the oceans up close tar

  19. Heyerdahl has seen the pollution of the oceans up close tar plastics

  20. Oceans Jaques Cousteau

  21. Oceans • Both Cousteau & Heyerdahl became ardent environmentalists • “The oceans are ill”

  22. Oceans • e.g. abalone

  23. Oceans • e.g. abalone

  24. Productivity • Ocean food chains begin with phytoplankton

  25. Phytoplankton • “Grass of the Sea” diatoms

  26. Phytoplankton • The producers of the sea dinoflagellates

  27. Zooplankton • “insects of the sea” • Primary consumers

  28. Phyto- plankton Zoo- plankton fish Marine Food Chain

  29. Marine Food Chain Blue Whale

  30. Marine Food Chain Blue Whale feeds on krill

  31. Blue whale annual migrations Marine Food Chain wintering grounds

  32. Productivity • Measured by the concentration of phytoplankton

  33. Productivity Open ocean is a “desert” Continental shelves more productive due to nutrients in runoff

  34. Georges Bank spring plankton blooms Gulf Stream

  35. Galapagos productivity upwellings stimulate productivity iron is the limiting nutrient adding iron sparks phytoplankton blooms a method of removing CO2 ???

  36. Red Tides dinoflagellate blooms produce neurotoxins

  37. Red Tides

  38. Red Tides

  39. Red Tides

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