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Table 3 Linear regression analysis of the effect of total Daphnia biomass (Btot) on the biomass (Bmax) dwelling in the algal maximum (cf. Fig. 6). Comparison of the different Daphnia size classes. Model: log(Bmax) = b·log(Btot) + a.

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

Size class slope intercept R2 p
1 1.180 -0.548 0.916 <0.001
2 1.252 -0.365 0.955 <0.001
3 1.230 -0.240 0.979 <0.001
4 1.209 -0.208 0.984 <0.001
total 1.214 -0.244 0.985 <0.001
Comparison of regressions d.f. F p
Difference of slopes 3, 124 0.45 0.719
Difference of elevations 3, 127 70.43 <0.001