EARTHWORMS AND ALUMINUM
WORMS OF STEEL
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
|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
ABOVE: Digging a hole6.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)
8. Compare results.