Dissolved Oxygen in Kuapa Pond Presented By Ashley Short, Crystal Aloisio, Yayun Hsueh Hahaione School Grade 6.

Dissolved Oxygen Dissolved Oxygen in Kuapa Pondin Kuapa Pond

Presented ByPresented By

Ashley Short, Crystal Aloisio,Ashley Short, Crystal Aloisio,

Yayun HsuehYayun Hsueh

Hahaione SchoolHahaione School

Grade 6Grade 6

Research QuestionResearch Question

How does non point source pollution and animals and plants living in the marina affect the percent

saturation of dissolved oxygen?

BackgroundBackground ResearchResearch 3o years ago Kaiser Development dredged Kuapa Pond. Hawaii Kai was first owned by Bernice P Bishop after the

monarchy government. Hawaii Kai or Kuapa Pond used to be a fishpond. Hawaii Kai including Kuapa Pond, covers 523 miles ranging

from the area inward from Maunalua and just west of the pond, the foothill of Koko Head Crater to Kaluanui Ridge.

Dissolved Oxygen is necessary for a body of water to sustain life.

Normally a higher dissolved oxygen level indicates better water quality.

If the levels are to low some marine plants and animals may not be able to survive.

In an area where organic matter is decaying, there may be a lower amount of dissolved oxygen because bacteria require oxygen to decompose organic matter, therefore resulting in lower levels of oxygen.

Water near a sewer discharge plant may also have low dissolved oxygen levels.

Non point source pollution is pollution that comes from many indirect sources.

Non point source pollution is caused by rainfall moving over the ground and as the runoff moves, it picks up natural and man- made pollutants.

“The solution to Pollution is Dilution.” That was an old saying that people thought was true.

Now with research we have found that it is not true. They thought the sea was infinite so the concentration of

pollution would not increase. Really the ocean is finite so every time pollution enters the

water, the concentration of pollution increased.

HypothesisHypothesis

If water flows from the mountain to the sea and there is non point source pollution in that water, then the amount of dissolved oxygen will decrease in the lower part of Kuapa Pond, because the non point source pollution will kill the marine plants and animals resulting in decomposition of organic matter.

MaterialsMaterials Pair of plastic gloves. Eye goggles. Dump bucket with cover. Thermometer. 10 ml plastic vial with cap. Lamot pills test kit. (dissolved oxygen.) Ampoule test kit. (dissolved oxygen.) Distilled water in squirt bottle. Plastic Cups. Clip board and pencil. Data Chart.

ProcedureProcedure Pills

– Collect a water sample.– Completely fill vile with sample water.– Drop two dissolved oxygen test pills

into the water.– Cap and invert continuously for 5

minutes.– Collect and compare data to indicator

chart.– Record data on data chart.– Repeat steps 1-6 at least 6 more times.

AmpoulesAmpoules

•Collect a water sample. •Fill vial to line with sample water. •Place one ampoule in vial.•Crack the tip of the ampoule and let the indicator liquid change color. •Remove the ampoule and slowly invert for two minutes. •Collect and compare data to indicator chart. •Record data on data chart. •Repeat steps 1-7 at least 6 more times.

Data and ObservationsData and Observations

Observations– There were plants and animals living in

the marina.– Lots of boats.– The water is was very merky– There was lots of leaves in the water.– There was oil in the water

DataData

Dissolved Oxygen Level at Mariners Cove

0

2

4

6

8

10

12

1 2 3 4 5 6 7 8 9 10

Averages

Test Trials

Dissolved Oxygen Levels in ppm

Pills

Ampoules

Dissolved Oxygen Levels at the Agriculture Site

0

1

2

3

4

5

6

7

1 2 3 4 5 6 7 8 9 10

Averages

Test Trials

Dissolved Oxygen Levels in

ppmPills

Ampoules

Dissolved Oxygen Levels at the Post Office

0

1

2

3

4

5

6

7

1 2 3 4 5 6 7 8 9 10

Average

Test Trials

Dissolved Oxygen Levels in

ppmPills

Ampoules

Dissolved Oxygen Levels at Hancocks Landing

0

1

2

3

4

5

6

7

8

9

1 2 3 4 5 6 7 8 9 10

Average

Test Trials

Dissolved Oxygen Levels in ppm

PillsAmpoules

Dissolved Oxygen Levels at Pizza Hut

0

1

2

3

4

5

6

7

8

1 2 3 4 5 6 7 8 9 10

Average

Test Trials

Dissolved Oxygen Levels in ppm

Pills

Ampoules

Dissolved Oxygen Levels at the Boat Harbor

0

1

2

3

4

5

6

7

8

1 2 3 4 5 6 7 8 9 10

Average

Test Trials

Dissolved Oxygen Levels in ppm

Pills

Ampoules

Dissolved Oxygen Averages

0

1

2

3

4

5

6

7

8

AS MC PO HL PH BH Average

Test Sites Average

Dissolved Oxygen Levels in

ppmPillsAverege

AmpoulesAverage

AnalysisAnalysisWe observed that there was non point source pollution in the water. The non point source pollution could be killing the marine plants

and animals causing a lower amount of dissolved oxygen. Looking at the data the

marina by Pizza Hut had the most dissolved oxygen. This shows that there is most likely less non point source pollution, which means

less decomposition of organic matter. The order from highest levels to lowest levels is;

Pizza Hut, Mariners Cove, Boat Harbor, Agriculture Site, and the Post Office. Post Office, being the lowest would most likely

have more non point source pollution killing marine animal and plant life, then resulting in

decomposition of organic matter which lowers dissolved oxygen levels.

ConclusionConclusionLooking at the data our hypothesis

was wrong. We predicted that there would be lower levels in the bottom pond. They were

higher in the bottom and lower in the top. We think that the non

point source pollution did not exit the top pond because its has only one place to exit. If this did

happen then the non point source pollution killed the marine plants and animals

resulting in decomposition of organic matter.

NextNext StepsStepsIf we could further our experimenting, we

would go back and test for nitrates as well. Then we would do research on

nitrates and the connections to dissolved oxygen. We would also research even

more in depth about Kuapa Pond. If the nitrate and dissolved oxygen levels were low, we would research and see another

variable of the dissolved oxygen level and then do tests to see what is making

the dissolved oxygen levels lower.

PicturesPicturesBefore ConstructionBefore Construction

http://www.hawaiikaimarina.com/images/nostalgia/hawaiikai1974_1024.JPG

After Construction After Construction

http://www.808golf.com/oahu/pointsofinterest/eastoahu/images/p5.jpg

The End

Any questions ?