By: Brittany Bolling
April, 28th 2011
BIO 101 DO6A
The objective of this study was to observe and understand what occurs in a sample of pond water over the course of six weeks. Over the six weeks there were qualitative and quantitative data found and recorded. The qualitative data recorded entailed: Water color and smell as well as suspended solids ranging from clear, opaque, and turbid. The quantitative data that was recorded regarded: Temperature, pH, Alkalinity, Hardness, Chlorine, as well as, Nitrate, and Nitrite. There was also two views of microscope observations. This report will explain and go into detail regarding the results of the observation of the pond water. INTRODUCTION:
Water 9. Slide covers Soil/Grass 10. Plant mobile with grow lights Jar 11. I.D. Books Microscope 12. Nail
Thermometer 13. Hammer
Water quality test strips 14.Tape
Pipette 15. Nitrate/Nitrite strips 5 Slides 16. Lab Manual
Located a 16-32 oz clear glass or plastic jar.
Took the lid of the jar off and punctured holes in it. Metal lids are usually best, because you can use a hammer and a larger nail to puncture holes; Where as a plastic lid tends to crack with a hammer and nail. Found a pond that contained water year round.
Filled the jar 3/4 full with pond water.
Added a 1/2 inch of sediment from the bottom of the pond.
Also, added a small amount of dead grass or leaves to the jar. Prevented spillage while traveling, by placing a paper towel or plastic wrap between the top of the jar and then gently screwed the lid on over the plastic. Once in the lab, label the pond water using a stick on label with your name, instructors name, class section, and a general description of the location of the pond. Stored the pond water sample on the plant mobile under the grow lights between observations. Recorded the qualitative, quantitative, and microscopic observations on a weekly data sheet for six weeks. See methods 11- Observed the qualitative observations. See methods 12-15
Described the color of the water
Described any smells present
Described the amount of suspended solids in the water.
Described anything that seemed out of the ordinary. This could include sightings of large organisms. Observed the quantitative observations. See methods 17-19
Using a thermometer, found the temperature of the pond water. Be sure to keep the thermometer elevated in the water. Obtained water quality test strips to determine the pH, alkalinity, hardness, total chlorine, and free chlorine content of the pond water sample. Obtained nitrate/nitrite test strips to record the water quality. Finally observed the microscopic observations. See methods 21-23 With the disposable pipette, make simple wet mounts form the middle and bottom of the pond water sample. When sampling the bottom, stay just above the sediment. Draw any organisms viewed in the space provided on the weekly data sheet. Using ID books, ad other reference materials, try to identify any organisms found. When finished with the observations, disposed of the coverslips and slides and returned the microscope. Returned the pond water sample to the plant mobile.
Continued the process for six weeks.
Refer to back for tables and graphs. Figure 1.1 is a table of the temperature through the six weeks. In week one is begins to increase till week 4, then decreases a small amount then increases again. Figure 1.2 is a graph of the temperature through the six weeks showing that it increased till week 4. Figure 2.1 is a table of the pH levels through the six weeks. It shows that the first 3 weeks its at 6.8 then increases to 7.2 for 2 weeks then on the six week it is...
Please join StudyMode to read the full document