Dissolved Oxygen Levels at Lake Munson, and its tributaries

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Group IV 2008
Dissolved Oxygen Levels at Lake Munson, and its
tributaries Ognjen Colakovic , Greg Herman,
Alden Slemkewicz, Ryan Welke
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Background on Dissolved Oxygen

• Dissolved oxygen is gaseous O2 dissolved in
  water.
• Aquatic plants and algae dispense oxygen directly
  into the water via photosynthesis and it is also
  absorbed directly from the atmosphere.
• Fish use their gills to breathe the dissolved
  oxygen.
• Oxygen levels change with the time of day, the
  temperature, altitude and the season.

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Background on Dissolved Oxygen

• The colder the water the more oxygen that is
  able to be absorbed the warmer the water, the
  less oxygen that can be absorbed.
• Low altitudes are more conducive to the
  dissolving of oxygen because of the higher
  atmospheric pressure.
• Water quality is considered good if there are 8-9
  parts per million at 20 C.

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Our purpose

• Our goal was to determine which part of the Lake
  Munson system contained the most dissolved
  oxygen.
• Our areas of interest included the entering
  tributary, the main lake, and the exiting
  tributary.

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How we went about our business

• We designated a portion of each area where we
  would take our sample

Exiting Trib
Entering Trib.
Main Lake
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How we went about our business

• We took three samples from each area of interest

Entering Trib
Exiting Trib
We then fixed and titrated the sample to
determine the dissolved oxygen level
Titrating solution
Fixing the sample
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What We Found
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What We Found
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What We Found
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What we concluded

• Results from each week we went to the lake (a
  total of three consecutive weeks) showed that the
  exiting tributary contained nearly 1ppm more than
  both the exiting and entering tributary
• We concluded that the exiting tributary contained
  the most dissolved oxygen

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Lake Munson
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Entering TributaryIn the beginning
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Entering Tributary Today
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Exiting Tributary
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Exiting Tributary
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Inflatable Boat!!!With plastic paddles
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Just a Warning
Do not drive onto protected Leon County property
with any motor vehicle of any kind! Be aware that
the FWC agents like to blend in with the
wilderness and hide behind trees You have been
warned!
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Thanks!

• We would like to thank Ms. Fields for providing
  us with such a great learning experience.
• Although the Group IV project was intimidating at
  first, tedious at times, and something I lost a
  great deal of sleep over (its 205 AM right now)
  it was a lot of fun to do and a very valuable
  experience for all the members in our group.
• So thanks again Ms. Fields!