Table 1.
Canonical partitioning of the bacterial variation into the relative effects of sand type, season and sediment depth, individually or in combination
| Multivariate model | d.f. | R2adj | F |
|---|---|---|---|
| Carbonate and silicate | |||
| Type + Season + Depth | 3 | 0.30 | 8.812*** |
| Type | (Season, Depth) | 1 | 0.14 | 11.342*** |
| Season | (Type, Depth) | 1 | 0.08 | 2.729*** |
| Depth | (Type, Season) | 1 | 0.08 | 6.979*** |
| Type × Season | 3 | 0.25 | 7.187*** |
| Season × Depth | 3 | 0.17 | 4.929*** |
| Depth × Type | 3 | 0.24 | 6.775*** |
| Carbonate | |||
| Season + Depth | 2 | 0.21 | 4.590*** |
| Season | Depth | 1 | 0.14 | 5.705*** |
| Depth | Season | 1 | 0.05 | 2.658*** |
| Season × Depth | 3 | 0.24 | 3.888*** |
| Silicate | |||
| Season + Depth | 2 | 0.31 | 7.227*** |
| Season | Depth | 1 | 0.12 | 5.780*** |
| Depth | Season | 1 | 0.19 | 8.339*** |
| Season × Depth | 3 | 0.33 | 5.677*** |
For each global or partial model, the number of degrees of freedom (d.f.), amount of explained variation (R2adj), F statistic and corresponding significance levels (*** P < 0.001) as assessed by 999 permutations are indicated. Symbols (+, ×) denote models with additive or interaction effects, respectively, while a vertical bar ( | ) indicates a partial regression model, wherein the effects of the factors on the right-hand side of the bar were controlled for while assessing main effects.