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Table 2 Results of a GLM ANOVA on factor scores of PC1 and PC2 with estimates of the main effects of Daphnia biomass (Mass), size class (Size) and experimental tower, and the two-way interactions between these.

From: Vertical distribution of zooplankton: density dependence and evidence for an ideal free distribution with costs

Factor d.f. MS F p
PC1     
Mass 4, 92 14.99 55.59 <0.001
Size 3, 92 6.66 24.69 <0.001
Tower 1, 92 0.92 3.42 0.068
Mass × Size 12, 92 0.74 2.74 0.003
Mass × Tower 4, 92 0.51 1.88 0.121
Size × Tower 3, 92 0.16 0.59 0.168
PC2     
Mass 4, 92 0.71 1.89 0.119
Size 3, 92 18.66 49.96 <0.001
Tower 1, 92 9.74 26.07 <0.001
Mass × Size 12, 92 0.15 0.40 0.960
Mass × Tower 4, 92 2.06 5.51 <0.001
Size × Tower 3, 92 1.11 2.97 0.035