Table 2 Nested ANOVA testing effect of the mixed diet (cyano; high/low cyanobacteria proportion), the diatom addition (diatom; HD high diatoms, LD low diatoms, S sediment only), and amphipod population origin (basin) on the response variables: δ13C values, C:N ratio, body mass change relative to the initials (Growth) and Acetylcholinesterase (AChE) activity; see also Figs. 3 and 4.
Effect | SS | df | MS | F | p-value |
|---|---|---|---|---|---|
δ13C | |||||
Basin | 7.96 | 1 | 7.96 | 59.934 | 0.000 |
Basin:diatom | 0.598 | 4 | 0.15 | 1.127 | 0.353 |
Basin:diatom:cyano | 0.708 | 4 | 0.177 | 1.334 | 0.268 |
Residuals | 7.836 | 59 | 0.133 | ||
Growth | |||||
Basin | 0 | 1 | 0 | 0.001 | 0.974 |
Basin:diatom | 0.092 | 4 | 0.023 | 1.132 | 0.350 |
Basin:diatom:cyano | 0.211 | 4 | 0.053 | 2.606 | 0.045 |
Residuals | 1.194 | 59 | 0.020 | ||
C:N ratio | |||||
Basin | 13.821 | 1 | 13.821 | 50.446 | 0.000 |
Basin:diatom | 0.978 | 4 | 0.245 | 0.893 | 0.474 |
Basin:diatom:cyano | 4.665 | 4 | 1.166 | 4.257 | 0.004 |
Residuals | 16.165 | 59 | 0.274 | ||
AChE activity | |||||
Basins | 0.849 | 1 | 0.849 | 6.386 | 0.014 |
Basins:diatom | 0.192 | 4 | 0.048 | 0.361 | 0.835 |
Basins:diatom:cyano | 0.609 | 4 | 0.152 | 1.146 | 0.344 |
Residuals | 7.980 | 60 | 0.133 | 7.980 | |
