Table 1.

Scaling analyses of morphological (adult, juvenile) and biomechanical properties (juvenile) of bull kelp

Regression	H 0	Slope	±95% CI	Type of scaling*	y-intercept	R 2
Adult Kelp
Bulb∼Stipe	b = 1	0.70	0.54–0.91	Negative allometry	−2.44	0.59
Juvenile Kelp
Bulb∼Stipe	b = 1	1.19	0.96–1.49	Isometric	−3.49	0.78
BreakSurfaceArea∼Stipe	b = 2	0.66	0.49–0.94	Negative allometry	−1.98	0.41
Young's modulus∼Stipe	b = 0	−1.23	−(1.44)–(−1.05)	Negative allometry	7.61	0.88
MaxStress∼Stipe	b = 0	0.55	0.36–0.87	Positive allometry	−2.23	0.03
ConventionalStrainFail∼Stipe	b = 0	0.02	−0.17–0.21	Independent	0.67	0.003
Toughness∼Stipe	b = 0	1.31	0.98–1.75	Positive allometry	−7.03	0.61
Ffail∼Stipe	b = 2	0.69	0.51–0.95	Negative allometry	−1.71	0.55
Work∼Stipe	b = 3	1.80	1.44–2.26	Negative allometry	−4.25	0.76

“Stipe” refers to stipe length; H₀ = null hypothesis; CI = confidence interval, used to determine whether slope varies from isometric.

*Scaling relative to the null hypothesis.