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Table 3 Comparison of predation rates of N. melanostomus on Gammarus pulex based on factorial ANOVA with the factors trial (single species vs. mixed species) 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
Trial
  7284.869 1 7284.869 2.565 0.112
 Error 283960.694 100 2839.607   
Substratum
  29647.329 1 29647.329 12.256 0.001
 Error 241893.087 100 2418.931   
Interaction trial x substratum
  20296.829 1 20296.829 6.031 0.016
 Error 336567.269 100 3365.673   
  1. Italic values indicate significance of p value (p < 0.05)
  2. SS sum of squares, df degrees of freedom, MS mean square, F F value, p p value of single factors and their interactions, respectively