Table 5. Classification success of the canonical discriminant analysis (CDA).

	CDA classification success (%)	Expected classification success upon random group allocation (%)
Combined factor (16 factorial combinations)	53.8	6.6
Species	98.6	50.5
Growth phase	82.9	50.0
Resource quantity	66.4	50.3
Resource N:P level	93.3	50.5

Classification success of the canonical discriminant analysis (CDA) following a leave-one-out-cross-validation scheme. Percentage of correctly classified cells are given for the combined factors used as grouping criterion in the CDA, and the four factors (species, growth phase, resource quantity and resource N:P), separately. The first column gives percentages of cells correctly classified to each level of the respective factor using all axes of the CDA identified as significant (see Table 4). The second column gives expected classification success on random group allocation analytically computed from the respective group sample sizes. Permutational tests indicated that achieved classification success was significantly different from expected success for all factors (all P <0.001).