Table 1.
Experiment 1.
| Dependent variable: community similarity | |||||
|---|---|---|---|---|---|
|
Significance (p-value) |
|||||
| df | 1 day | 2 days | 3 days | 4 days | |
| Corrected model | 3 | 0.051 | 0.000 | 0.001 | 0.020 |
| Intercept | 1 | 0.000 | 0.000 | 0.000 | 0.000 |
| Temperature | 1 | 0.437∗ | 0.002 | ||
| Nutrients | 1 | 0.747∗ | 0.001 | 0.001 | 0.020 |
| Temperature ∗ nutrients | 1 | 0.006 | 0.163 | ||
|
Degrees of freedom |
|||||
| Error | 62 | 62 | 13 | 13 | |
| Total | 66 | 66 | 15 | 15 | |
| Corrected total | 65 | 65 | 14 | 14 | |
R Squared = 0.12 (Adjusted R Squared = 0.08) 1 day
R Squared = 0.25 (Adjusted R Squared = 0.21) 2 days
R Squared = 0.59 (Adjusted R Squared = 0.56) 3 days
R Squared = 0.35 (Adjusted R Squared = 0.30) 4 days
Results of the tests of significance (ANOVA) for the impact of incubation temperature and low-level nutrient addition on the % similarity of bacterial community composition (BCC) between samples in Experiment 1 at Toolik inlet. The p-value for the main effects (temperature and nutrients) and the interaction term is given for each day of the experiment; days 3 and 4 are for low-temperature treatments only. A Kruskal–Wallace test for day 1 data (∗ in Table) confirmed non-significance with p = 0.907 for temperature and p = 0.969 for nutrients. The overall model R-squared is given for each day of the experiment.