Table 3.

Nonparametric multiple comparison of the relative contributions of populations Ac1 and BETA3 between predator-exposed reactors and control stages and between different predator reactorsa

ExperimentPopulationNo. of samples (days sampled)Control stage vs Ochromonassp.Control stage vs C. glaucomaOchromonas sp. vs C. glaucoma
Us b PUs PUs P
1998 Ac1 9 (3–12) 81<0.01 48.5 NSc 81 <0.01
BETA3 9 (3–12) 81 <0.01 71<0.05 81 <0.01
1999 Ac1 14 (3–16)196 <0.01 106 NS 196<0.01
BETA3 14 (3–16) 196 <0.01 183<0.01 195 <0.01
  • a For details of the statistical procedure, see the text.

  • b Us , test parameter.

  • c NS, not significant at P values of <0.05.