The main purpose of this lab is to determine the productivity of water by calculating the dissolved oxygen levels of different waters with different factors affecting them. This has true life implications due to the fact that humans are always looking for the most productive water to grow in and the best factors which affect them.
One large factor in the dissolved oxygen levels is temperature. How well oxygen is kept in the water and not released into the air is affected by the temperature. Does the warmer the water the more oxygen or vice versa?
In addition for water to be productive and dissolved oxygen levels to be high, light must be present. How are plants and other agriculture in the water to conduct photosynthesis without light? Furthermore when plants and agriculture in the water are conduct photosynthesis they are releasing oxygen into the water which is dissolved.
The Experiment was setup in two fashions one testing each of the factors above
Temperature was tested using the Winkler Method at 3 temperatures;0, 20 and 30 degrees Celsius. In addition we used two different water supplies, thus being able to compare 6 samples. We collected data for how many ml of sodium thiosulfate change the color of the solution from purple to colorless in each of the 6 samples
Light was tested by manipulate the amount of light each bottle received. Two different water sources were used and different amount of layers of foil were add to each sample. After siting for several hours(24 hours) the samples were tested for dissolved oxygen level using the Winkler method. We use the data we received from the Winkler method to solver for gross and net productivity, respiration and total carbon.
We are able to use the Vernier method to check ourselves. We inserted the probe in each of the three different water source. With the Vernier method we were able to find the exact level of dissolved oxygen in all three. In addition the probe gave us the Carbon Dioxide level, ph,temperature,turbidity and more
Light was tested by manipulate the amount of light each bottle received. Two different water sources were used and different amount of layers of foil were add to each sample. After siting for several hours(24 hours) the samples were tested for dissolved oxygen level using the Winkler method. We use the data we received from the Winkler method to solver for gross and net productivity, respiration and total carbon.
We are able to use the Vernier method to check ourselves. We inserted the probe in each of the three different water source. With the Vernier method we were able to find the exact level of dissolved oxygen in all three. In addition the probe gave us the Carbon Dioxide level, ph,temperature,turbidity and more
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