Primary parameters
The related DEB models share a number of parameters, from which implied properties can be computed.This page gives survivor functions of the values in the collection with their medians.
{Fm} is the
surface area-specific maximum searching rate.
The lower the value, the
easier food density limits food intake.
easier food density limits food intake.
κX is the
digestion efficiency, i.e. the fraction of food energy that converts to
reserve energy.
reserve energy.
{pAm} is the
surface area-specific maximum assimilation rate.
It is proportional to the
zoom factor z.
zoom factor z.
v is the
energy conductance. It controls the reserve mobilisation rate.
The larger the
value, the lower the reserve capacity.
value, the lower the reserve capacity.
κ is the
allocation fraction to soma,
i.e. the fraction of mobilised reserve energy that is allocated to somatic maintenance plus growth.
[pM] is the
volume-specific somatic maintenance rate.
Somatic maintenance
is the product of this parameter and
structural volume.
is the product of this parameter and
structural volume.
[EG] is the
volume-specific cost for structure, including overhead costs.
It is proportional to the specific density of structure dV, which approximates its dry/wet weight ratio.
ha is the
Weibull aging acceleration.
Together with other metabolic parameters,
it controls expected life span.
Together with other metabolic parameters,
it controls expected life span.
sG is the
Gompertz stress coefficient.
The larger the value, the steeper drops the
survival probability to zero.
survival probability to zero.
kJ is the
maturity maintenance rate coefficient.
Maturity maintenance is the product of this parameter and maturity, represented as cumulated reserve energy investment.
κR is the
reproduction efficiency,
i.e. the conversion efficiency from reverve in the reproduction buffer (of adults) to energy
fixed in offspring (mostly eggs).
fixed in offspring (mostly eggs).
EHb is the
maturity level at birth,
i.e. the initiation of feeding. It is
proportional to the cubed zoom factor z.
i.e. the initiation of feeding. It is
proportional to the cubed zoom factor z.
EHp is the
maturity level at puberty,
i.e. the ceasing of further maturation and the initiation of allocation to reproduction. It is proportional to the cubed zoom factor z.
i.e. the ceasing of further maturation and the initiation of allocation to reproduction. It is proportional to the cubed zoom factor z.
Zoom factor z is the (dimensionless) value with which 1 cm must be multiplied to arrive at maximum structural length, i.e. the cubic root of maximum structural volume.
It is a function of the parameters κ, {pAm} and [pM].