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Science of Water: 10:00 am lab Group 1

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Anlara McKenzie

on 19 September 2014

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Transcript of Science of Water: 10:00 am lab Group 1

Control Variables
Science of Water: 10:00 am lab Group 1
Group Project: Pig Pen Pond, Deep and Shallow Waters
Paulina Christ, Sarah Demeke, Lauren Lee , Anlara McKenzie, & Kaitlyn Snyder

Discussion and References
Shallow Water

Edge of pond
48 cm deep
50 cm from edge of pond
Deep Water

152 cm deep
331 cm from the edge
Indepdent Variables: Two Different locations of water at Pig Pen Pond-
Results Explained
Turbidity is
0 NTU for deep water
2.8 NTU for shallow water.
Nitrate Nitrogen levels
1ppm for both shallow and deep
Phosphate levels
0ppm for both shallow and deep
284μS/cm in shallow water
293 μS/cm in the deep
Error Analysis
There was a good amount of error
-Faulty LabQuest
-Human error
-Multiple samples should be taken from the same region of the ponds
-Take samples from all around the perimeter and in several sections of the middle region
We rejected the hypothesis, that depth of Pig Pen Pond affects water quality, because the results were too similar
To test if the depth of water had an effect on the water quality of Pig Pen Pond
Dependent Variables: The results of the water quality tests performed on the two different water samples
Fecal Coliforum
Sarah and Anlara
Paulina and Lauren
Nitrate Nitrogen
Paulina and Lauren
We chose Pig Pen Pond because it is located on UMBC campus.
The visual differences of the pond at different water levels caused us to test water quality.
Paulina and Lauren
Dissolved Oxygen
Anlara and Sarah
Shallow water: Murky, food wrappers, fallen leaves, algae
Deep Water: Clearer water, fallen tree branches, algae, aquatic plants

Future Experiments
Conducted the tests immediately after walking back from the field.
Sunny and approximately 65 degrees Fahrenheit

Day and time of sample: November 6th, 2013 around 10:30 am
Capped water samples while walking back and while in the lab and not in use.
As the graphs show, the
water quality in the deeper
region was similar to the shallow water. The pH was closer to being neutral, the turbidity, conductivity, and dissolved oxygen was lower, and the fecal coliform colonies were less than the shallow end.
First Graph
The first graph showed the tests measured in parts per million:
Nitrate Nitrogen
Dissolved Oxygen

Second Graph
Second graph showed the results for turbidity
Measured in Nephelometric Turbidity Units (NTU)

Third Graph
Third graph shows the conductivity tests
Measured in Microsiemens Per Centimeter (μS/cm)

Fourth Graph
Shows the fecal coliform test
Measured by the number of blue colonies

These parameters affect the health of the ecosystem as well as life that is dependent on water (Mukhopadhyay et. al 2004).

pH -
How acidic or basic the water is
Turbidity -
Tests the water clarity
Conductivity -
Measure of water’s ability to conduct current or electricity
Nitrate nitrogen -
Necessary for life, but too much can cause eutrophication
Phosphates -
limiting factor in freshwater and too much can cause eutrophication
Dissolved oxygen -
Important for aquatic organisms to survive
Fecal coliform -
Bacteria found in feces of warm blooded mammals and birds

Details of Locations
Sunny and approximately
65 degrees Fahrenheit
Algal blooms in water
Leaves and wood debris around edge of pond
Take samples from the perimeter every 5 feet and compare to
samples from the middle region
Water depth affects the water quality.
Take samples from the edge with large resident bird population in the warmer months
Take samples from shallow end opposite from the pier, where there is little to no human contact. Shade from the trees might effect photosynthesis
Boyd, C. E., & Tucker, C. S. (1998). Pond aquaculture water quality management. Boston:
Kluwer Academic.

Mukhopadhyay, G., Mondal, D., Biswas, P., & Dewanji, A. (2004). Water quality monitoring of
tropical ponds: Location and depth effect in two case studies. Acta Hydrochimica
Et Hydrobiologica, 32(2), 138-148.

Readel, Karin (2000). Chemical Analysis of Water Samples. Science 100; Water, An Interdisciplinary
Study. UMBC Baltimore MD.

Virginia Department of Game and Inland Fisheries (n.d.). (2013). Pond management: Fish kills.
Retrieved from http://www.dgif.virginia.gov/fishing/pondmanagement/fishkills.asp

"Water Quality Concerns for Ponds." Water Resources (Penn State Extension). Penn State College
of Agricultural Sciences, n.d. Web. 15 Oct. 2013. Retrieved from

Sipaúba-Tavares, L. (2007). Effects of rainfall on water quality in six sequentially disposed fishponds with continuous water flow . Brazilian Journal of Biology , 67(4), 643-649. Retrieved from

McCaffery, S. (2009). Water quality parameters & indicators. Retrieved from http://www.namoi.cma.nsw.gov.au/factsheet_water_quality_parameters.pdf

Pond image

Two images from

Fifth Graph
Shows the pH test
Both very basic

Take samples
after a rainstorm
Full transcript