Dissolved+Oxygen+and+Temperature

Measure of Dissolved Oxygen and Temperature This is a partner activity that requires the boat.

-DO and temp meter
 * Tools:**

1. Get meter and put life jackets on. Paddle the boat out to approximately the middle of the body of water. 2. Start the meter read at the very surface of the water and let it read. 3. Repeat the meter read for depths of .5 meters and then full meters. (ex. .5,1,2,3 etc.) 4. Record temp and DO readings for every depth. Note: Only take readings until the meter hits the bottom. Some bodies of water are shallower like only 2 meters in depth.
 * Procedure:**

The significance of this test is discovering the dissolved oxygen in the water to see how much life the body of water can support. This also lets us know how much decomposition there is in the pond since decomp bacteria use a lot of oxygen. The more DO a body of water has the better water quality it has. There are many factors that control the DO like if the water is moving or stangnant, how much it rains in the area, how many inlets from the watershed it has, the decomposition in the water, and the temperature. The temperature and dissolved oxygen are positively associated, meaning that the higher the temperature, the higher the DO in that body of water.
 * Significance:**

For example, some typical results could look like:
 * Typical Results:**

Surface: 7.4 mg/L at 9.6 C .5m: 7.4 mg/L at 8.7 C 1m: 6.63 mg/L at 8.4 C 2m: 5.88 mg/L at 8.3 C

Liz T and Brittany H going into the Marsh to get DO readings
 * Picture:**