Table 5 Comparison of predation rates of N. melanostomus for single species predation trials based on factorial ANOVA with the factors species (G. pulex vs. D. villosus) and substratum (absence vs. presence)
From: Synergistic impacts by an invasive amphipod and an invasive fish explain native gammarid extinction
 Factor | SS | df | MS | F | p |
|---|---|---|---|---|---|
Species | |||||
|  | 59950.019 | 1 | 59950.019 | 59.165 | p < 0.001 |
 Error | 82074.539 | 81 | 1013.266 |  |  |
Substratum | |||||
|  | 94868.898 | 1 | 94868.898 | 48.913 | p < 0.001 |
 Error | 157103.081 | 81 | 1939.544 |  |  |
Interaction species x substratum | |||||
| Â | 12026.53 | 1 | 12026.53 | 7.145 | 0.009 |
 Error | 136349.47 | 81 | 1683.327 |  |  |