Table 1.

Regression results for spatula-density versus body-mass analyses

Partition	Scaling exponents		Comparison of analyses
	Raw species values	Phylogenetically corrected (ICs)
Dry	0.13 (ns); 95% CL (−0.020, 0.27); P = 0.08; df = 61	0.064 (ns); 95% CL (−0.13, 0.26); P = 0.50; df = 37	ns
Wet	0.16 (ns); 95% CL (−0.16, 0.47); P = 0.30; df = 18	0.093 (ns); 95% CL (−0.10, 0.29); P = 0.32; df = 15	ns
Branched	0.22 (+); 95% CL (0.052, 0.38); P = 0.014; df = 43	−0.030 (ns); 95% CL (−0.25, 0.19); P = 0.78; df = 22	*
Unbranched	0.29 (+); 95% CL (0.089, 0.43); P = 0.006; df = 36	0.12 (ns); 95% CL (−0.024, 0.26); P = 0.10; df = 31	*
Pooled	0.50 (+); 95% CL (0.38, 0.62); P < 0.001; df = 80	0.10 (ns); 95% CL (−0.036, 0.24); P = 0.14; df = 53	*

Each analysis was conducted on species values and ICs by using pooled and partitioned datasets (dry/wet, branched/unbranched). P values indicate whether the exponent is significantly different from zero. The rightmost column indicates where results from phylogenetic analyses were significantly different from nonphylogenetic analyses. +, significant and positive relationship; *, analyses yielded significantly different conclusions; ns, no significant relationship or no significant difference between analyses.