Table 1 Parameter values for mammals
From: Dynamics of starvation and recovery predict extinction risk and both Damuth’s law and Cope’s rule
Definition | Parameter | Value | References |
|---|---|---|---|
Asymptotic adult mass | M | (g) | |
Initial mass of an organism | m 0 | (g) | |
Metabolic rate scaling exponent | η | 3/4 | |
Metabolic normalization constant | B 0 | 0.047 (W g−0.75) | |
Initial mass scaling exponent | υ | 0.92 | |
Initial mass scaling normalization constant | n 0 | 0.097 (g1−υ) | |
Fat mass scaling exponent | γ | 1.19 | |
Fat scaling normalization constant | f 0 | 0.02 (g1−η) | |
Muscle mass scaling exponent | ζ | 1.00 | |
Muscle scaling normalization constant | u 0 | 0.38 (g1−ζ) | |
Energy to synthesize a unit of mass | E m | 5774 (J g−1) | |
Energy to synthesize a unit of mass during recovery | E′m | 7000 (J g−1) | |
Specific resource growth rate | α | 9.45×10−9 (s−1) | See text |
Fraction of asymptotic mass representing full state | ε λ | 0.95 | |
Fraction of asymptotic mass representing starving state | ε σ | 1−f0Mγ−1 | See text |
Fraction of asymptotic mass representing death | ε μ | \(1 - \frac{{f_{\mathrm{0}}M^\gamma + u_{\mathrm{0}}M^\zeta }}{M}\) | See text |
Carrying capacity (maximum density) of resources | C | (g m−2) | |
Half-saturation constant | k | (g m−2) | |
Normalized carrying capacity | ξ | C/k ≈ 2 | |
Reproductive fecundity | ν | 2 |
