Table 3. Results of a phylogenetic ordination analysis using canonical correspondence analysis for diets of 25 species in a snake community in temperate South America, using snake body size as a covariate.

Taxa	Variation	Variation %	F	P
Dipsadinae	0.89	36	10.44	0.0001
Micrurus	0.41	17	5.88	0.0063
Helicops	0.32	13	5.73	0.0063
Bothrops	0.24	10	5.11	0.0135
Philodryas	0.13	5	2.98	0.0526
Alternatus	0.14	6	3.95	0.0385
Pseudoboini	0.12	5	3.78	0.0373

Clades are ranked by the amount of variation explained at each node. Percentage of the variation explained (relative to total unconstrained variation) and F- and P-values for each variable are given (9,999 permutations were used) for each main matrix. Note that no groups used for variable selection yielded individual P≤0.05.