Eutrophication by Katie Hilton

Eutrophication by Katie Hilton
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By Katie Hilton

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  • I'm told the fertilizer is running off farm into the lake near by! I don't know what to do!
  • Fertilizer can enter a water source by leeching (downward motion of water through soil) or resurfacing as groundwater. 
  • Algal blooms occur because the water ecosystem experiences an increase in phosphate and nitrate that are found in the fertilizer. 
  • Hey look! Its an algae bloom!
  • Plants submerged in the water die due to lack of light that the algae bloom blocks and the low amount of oxygen in the water
  • The water plants are dying!
  • Since the algae feed on the excess nutrients, once the nutrients are used up the algae begin to die. Once the algae die, the other marine plants begin to die as well
  • No! Now that the algae is gone there is even less oxygen in the water! I wouldn't swim in there
  • Hey the algae died off! Maybe we can go swimming again!
  • As more algae die, more bacteria  begin to take over. This bacteria decompose the algae but use up more oxygen. Plant life can not survive without oxygen. When more plant and marine life die, more decomposers are needed which continually uses more oxygen 
  • With the bacteria in the water using up oxygen in the water, many fish cant survive. Fish use their gills to take the oxygen out  of the water. However, since the oxygen levels are so low many die...
  • Nemo? NEMO!!! May he rest in peace.
  • Hey Nemo... Daves not looking so good
  • This process is called Eutrophication. To prevent it we can control runoff and plant more vegetation
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