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Marine Pollution. Objectives: Explain how marine debris enters the ocean ecosystem and the impact it has on the marine ecosystem Explain how oil enters the ocean and its impact on marine life. List possible oil clean-up methods. Discuss the concept of Gaia and global ecology.

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PowerPoint Slideshow about ' Marine Pollution ' - ciara-crosby


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marine pollution

Marine Pollution

Objectives:

Explain how marine debris enters the ocean ecosystem and the impact it has on the marine ecosystem

Explain how oil enters the ocean and its impact on marine life.

List possible oil clean-up methods.

Discuss the concept of Gaia and global ecology.

sources of human contamination
Sources of Human contamination

1. Agricultural

  • Fertilizers
  • Pesticides
  • Herbicides
  • Animal wastes from farms and ranches
slide3

2. Domestic

  • Chemicals
  • Trash and other debris
  • Sewage
slide4

3. Industrial

  • Chemicals from mines, refineries, and manufacturing plants
  • Heavy metals
  • Radioactive wastes
slide5

4. Vehicles (automobiles and boats)

  • Fuel emissions
  • Oil spills
  • Trash
  • Sewage
impact of chemicals in the ocean
Impact of Chemicals in the Ocean

1. biomagnification –higher concentrations of chemicals as you move up the food chain

slide7

2. Eutrophication – excess nutrients enter the water, cause algal blooms which leads to oxygen depletion

slide9
Oil

Source of millions of gallons of oil

oil clean up methods
Oil clean-up methods
  • mechanical clean-up (mop up)- absorbing oil
  • fire
  • high pressure washing
  • bacterial break-down (bioremediation)
gaia hypothesis
Gaia Hypothesis
  • idea that our planet functions as a single organism
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