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Lauren K.

Lauren K.
Period 1
May 15, 2002
Piney Z Project


  1. Natural and cultural history of Piney Z/Lake Lafayette
    1. Physical Characteristics
      Piney Z Lake is 193 acres and is surrounded by 407 acres of property. It is located east of Tallahassee, one mile off Apalachee Parkway. It is close to becoming an urban fishery and includes black bass, Bluegill, and Redear Sunfish types. Piney Z’s Karst topography is similar to Walkulla county’s. Each have sinkholes; however, Wakulla County is more “Swiss cheese” than Leon County. Eventually the lake will be gone. The rate of this occurring is less if the development is less. This is called natural eutrophication. The plants will die as well as the fish. The state of Florida relies on the Floridan aquifer for 90% of its public drinking water. The ground water is protected by preventing pollution and over pumping it.

    2. Man’s impact: past, present, and future
      When the lake restoration began in October 1996, 25% of the lake bottom was scrapped and the muck was then turned into dikes or “fingers”. The Florida Fish and Wildlife Conservation Commission is trying to keep the lake alive. They carefully watch the development of Lake Piney Z Plantation. Runoff control would keep pesticides and fertilizers out of the lake. The best way to keep that from happening is by establishing twenty or thirty foot buffer zones that could be used to filter the storm water runoff. Piney Z will open to the public this summer. This adds in the factor of litter from picnics and cigarettes from smoke outs.

  2. Water Quality
    1. Temperature- a measure of warmth or coldness of a lake, river, or solution. It is the degree of heat in a body or “thing”. Temperature is important so we can see what climate the plant and animal life grow in.
    2. Dissolved Oxygen- a measure of oxygen concentration in a lake, river, or solution. Four – six mg/l or ppm is an acceptable range. Mg/l= milligrams per liter and ppm= parts per million. Dissolved oxygen levels concern the amount of oxygen that plant life gives off and animal life take in.
    3. pH- stands for potential hydrogen. It is a measure of a solution’s hydrogen in concentration. It can tell how acidic or basic a lake, river, or solution is. pH ranges from 1-14. pH = 7 is neutral, ph > 7 is basic, and pH < 7 is acidic.
    4. Turbidity- the cloudiness of water. It is a measure of the insoluble solids (soil, organics, microorganisms, etc.) that impede light passage. It is measured in Nephelometer Turbidity Units. 0 NTV = totally clean water. 0.5 NTV = noticeable cloudiness to the average person. Plants need light rays to grow.
    5. Phosphates- fertilizer. Attributes to eutrophication.
    6. Nitrates- fertilizer. Can overgrow plant life in lakes from runoff water.
  3. Measurement Taking
    1. Temperature- To measure the air temperature, we used a probe connected to a graphing calculator. On the graphing calculator there was a program that took the air temperature when we started the program. After ten seconds, the scribe recorded the temperature reading. We used this same process for the water temperature.
    2. Dissolved Oxygen- First we took a sample from an area on the lake. Then we put some of the water in a jar and poured a fixed rate of drops of substances into the sample (there were two kits with directions on what to do). We eventually had to put a substance in a shot giver. The amount of that substance that was put into the water sample to make it clear was the DO reading.
    3. pH- again we used the graphing calculator and the probe, but for pH we used a program that measured pH.

    Works Cited
    WaterWorks Newsletter Jan/Feb 1997
    US Environmental Protection Agency Polluted pamphlet
    About Groundwater Protection handout
    Water Conservation—Ways to be water wise handout