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Testing for Low Levels of Dissolved Oxygen in Upper City Lake
Organization(s):Innovation Academy - Palestine Campus
Country:United States of America
Student(s):Kennedi Davis
Emily Kupetz
Grade Level:Secondary School (grades 9-12, ages 14-18)
GLOBE Teacher:Benjamin Moran
Contributors:
Report Type(s):International Virtual Science Symposium Report
Protocols:Dissolved Oxygen, Nitrates
Presentation Poster:
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Date Submitted:03/01/2018
After observing a decrease in aquatic plant life in Upper City Lake we decided to run several tests to investigate what could have caused it. When comparing GLOBE data from the spring of 2016 and our own from the spring of 2017, we had noticed a dramatic decrease in the amount of dissolved oxygen in the water. Intrigued, we continued to tested the lake and did some outside research on what could cause dissolved oxygen levels to fluctuate. We discovered that the decrease in the amount of hydrilla we observed, rainfall, and air temperatures were some common factors that could cause the levels of dissolved oxygen in water to change. By gathering data on local rainfall and temperature from the spring of 2016 and 2017 we found that the rainfall and air temperature did have a slight correlation to the decreasing dissolved oxygen levels of the water. However, due to their little effect, we were able to rule them out as the major factors contributing to the decreasing dissolved oxygen levels in the lake. More tests should be conducted to understand why the hydrilla is dying and why the levels of dissolved oxygen in the water are decreasing.