EARTHWORMS AND ALUMINUM
WORMS OF STEEL
Procedure
ABOVE: Po-Tash team member records some data. Yay Po-Tash!
Research Question: Is there a correlation between low earthworm levels with high aluminum levels vs. high earth worm levels and low aluminum levels?
Hypothesis: The lower the earthworm levels, the higher the aluminum levels will be, because there is nothing churning and mixing the soil.
Negative control: Site 2 Quadrate 2
Positive control: Site 2
Independent variable: Number of earthworms
Dependent variable: Aluminum levels
Controls:
Size of "digging plot" | |
Depth of digging | |
Number of digs per quadrant | |
Technique for digging | |
Amount of soil extracted | |
Same procedure for chemical test is used at all times |
ABOVE: Laying the half meter squares square
Procedure:
ABOVE: Digging a hole
6.Take soil samples of equal volume from each of your plots. We used a soil core that was 14.5 cm tall, and 2 cm in diameter. Keep all of your samples separate and organized.
ABOVE: Team member takes a soil sample
7. Next, test each sample for aluminum. We used the LaMotte method. (click to see LaMotte Method)
ABOVE: Testing...
8. Compare results.
Worms of Steel! Procedure Discussion Data and Analysis What Not To Do Bibliography Acknowledgments Contact Us! |