Table 4.
Experiments 4a,b.
| Dependent variable: community similarity | |||||
|---|---|---|---|---|---|
|
Significance (p-value) |
|||||
| df | inlet, 6 days | inlet, 11 days | outlet, 6 days | outlet, 11 days | |
| Corrected model | 3 | 0.000 | 0.000 | 0.000 | 0.049 |
| Intercept | 1 | 0.000 | 0.000 | 0.000 | 0.000 |
| Temperature | 1 | 0.000 | 0.001 | 0.217∗ | 0.088 |
| Nutrients | 1 | 0.000 | 0.000 | 0.000∗ | 0.037 |
| Temperature ∗ nutrients | 1 | 0.070 | 0.163 | 0.622 | 0.097 |
|
Degrees of freedom |
|||||
| Error df | 51 | 42 | 62 | 41 | |
| Total df | 55 | 46 | 66 | 45 | |
| Corrected total df | 54 | 45 | 65 | 44 | |
R Squared = 0.44 (Adjusted R Squared = 0.41) inlet 6 days
R Squared = 0.66 (Adjusted R Squared = 0.64) outlet 6 days
R Squared = 0.49 (Adjusted R Squared = 0.46) inlet 11 days
R Squared = 0.18 (Adjusted R Squared = 0.12) outlet 11 days
Results of the tests of significance (ANOVA) for similarity of bacterial community composition after 6 and 11 days in two replicate high-level nutrient experiments conducted with bacteria and water from Lake I-8 inlet and Lake I-8 outlet. A Kruskal–Wallace test for outlet day 6 data (∗ in Table) confirmed non-significance with p = 0.619 for temperature and significance of p = 0.000 for nutrients. The p-value for the main effects (temperature and nutrients) and the interaction term is given for day 6 and day 11, along with the overall model R-squared for these days.