TABLE 5.
Correlation of nutrient levels and turbidity with total coliform, E. coli O157:H7 strain B6914, and total heterotroph levels in leachates collected from intact and disturbed soil columns over a 17-day perioda
Organism(s) | NO3
|
NH4
|
PO4
|
Total organic carbon
|
Turbidity
|
|||||
---|---|---|---|---|---|---|---|---|---|---|
Correlation | Probability | Correlation | Probability | Correlation | Probability | Correlation | Probability | Correlation | Probability | |
Total coliforms | 0.15047b | 0.1569 | 0.11821 | 0.2671 | 0.19634 | 0.0636 | −0.01026 | 0.9235 | 0.17995 | 0.0897 |
E. coli O157:H7 strain B6914 | 0.16867 | 0.1120 | 0.06548 | 0.5398 | 0.20552 | 0.0520 | −0.08795 | 0.4098 | −0.22412 | 0.0337 |
Total heterotrophs | 0.0543 | 0.6112 | −0.00692 | 0.9484 | 0.04626 | 0.6650 | −0.10878 | 0.3075 | −0.20565 | 0.0518 |
A positive correlation with a high probability (α > 0.10) indicates that the parameters compared occurred together; a negative correlation with a high probability indicates that the parameters did not occur together; and a low probability was inconclusive (there was no pattern). Coliform and B6914 levels were positively correlated with nitrate and ammonia levels in leachate and negatively correlated with total organic carbon levels.
Boldface type indicates correlations that did not have a significantly different (high) probability.