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. 2020 Dec 5;10(24):14033–14051. doi: 10.1002/ece3.6995

TABLE 3.

Parameters table

Symbol Value Units Parameter
Individual growth
M Variable g Asymptotic size
η 0.25 Ratio between M and m*
m* ηM g Maturation size
f 0 0.5 Initial feeding level
γ 538 g−q m3 year−1 Factor for search volume
α 0.6 Assimilation efficiency
h 85 g1− n year−1 Maximum food intake
n 0.75 Exponent for max. food intake
p 0.75 Exponent for standard metabolism
ks 4 Factor for standard metabolism
β 100 Preferred predator‐prey mass ratio
σ 1 Width of the feeding kernel
q 0.8 Exponent of search volume
Reproduction
m 0 0.1 mg Offspring mass
ε 1 Efficiency of offspring production
u 7 Width of maturation transition
Mortality
ξ 0.1 Fraction of energy reserves
μ 0 2 g1‐ n year−1 Background mortality
se max 1 g1‐ n year−1 Upper limit for senescence mortality
se min 0.1 g1‐ n year−1 Lower limit for senescence mortality
str 0.1 year−1 Starvation mortality cost
θ Variable Interaction matrix species‐specific value
Resource spectrum
κ 0.05 gλ−1 m−3 Magnitude of resource spectrum
λ 2 − n + q Slope of resource spectrum
r 0 4 g1‐p year−1 Regeneration rate of resources
m cut 1 g Upper limit of resources spectrum
Evolution
χ 0.001 Phenotype's introduction probability
Ω 10−30 Individual/m3 Extinction threshold
5% Fraction of initial phenotype's abundance
+−20% Magnitude of trait evolution

M is noted "variable" as it is species specific (values in Table 1). η starts at 0.25 for all species but will evolve during the simulations. Parameters values are taken from Hartvig et al. (2011). The value from γ was calculated from: γ=hf0(2π)σβλ2e((λ2)2σ2/2)κ(1f0) (Hartvig et al., 2011). Initial values for the abundance density N(m) of each species at t = 0 were based on the equilibrium equation: N=κ1000M2nq2+0.35mn0.35 provided in Andersen and Beyer (2006).