get_powers_j: scaled powers for abj model

Description Usage Arguments Value Note Author(s) References See Also Examples

View source: R/get_powers_j.R

Description

This function calculates scaled powers assimilation, mobilisation, somatic maintenance, maturity maintenance, growth, reproduction and dissipation as function of length and scaled reserves

Usage

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get_powers_j(p, L, e, s_M)

Arguments

p

A named list resulting from the importing of DEB parameters using the function get_DEB_pars. Alternatively a vector containing the DEB parameters (g, k, v_Hb, v_Hj and v_Hp (optional)) in the same order. For symbol meaning check code and documentation of get_DEB_pars

L

Structural length of the organism for which the powers are being calculated (it can be a vector)

e

Scaled reserves at which the variables are to be calculated (see Kooijman 2010 for a definition of e). It is a value between 0 and 1.

s_M

Acceleration factor for abj model.

Value

This function return a vector/matrix containing s scaled powers p_A, p_C, p_S, p_J, p_G, p_R, p_D They can be unscaled by * L_m^2 p_Am p_A = assimilation power; p_C = mobilisation power; p_S = somatic manteinance power; p_J = maturity mainenance power; p_G = growth power; p_R = reproduction power; p_D = dissipation power;

Note

Scaled values obtained here can be unscaled for further use. See examples. For further info on temperature corrections see Kooijman 2010 and t_corr

Author(s)

Antonio Aguera. BioMar, ULB, Bruxelles, Belgium (for R version)

References

Kooijman SALM (2010) Dynamic Energy Budget theory for metabolic organisation, Third edn. Cambridge University Press, Cambridge, 509 pp.

Lika K, Kearney MR, Freitas V et al. (2011) The covariation method for estimating the parameters of the standard Dynamic Energy Budget model I: Philosophy and approach. Journal of Sea Research, 66, 270_277.

Lika K, Kearney MR, Kooijman SALM (2011) The covariation method for estimating the parameters of the standard Dynamic Energy Budget model II: Properties and preliminary patterns. Journal of Sea Research, 66, 278_288.

See Also

t_corr get_DEB_pars

Examples

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## get the parameters for the species
p <- get_DEB_pars('results_Odontaster_validus.mat')

e <- 1   # maximum scaled reserve (no food limitation)
L <- 5 * p$del_M   # structural length from physical length (5cm arm length)
pACSJGRD <- get_powers_j(p, L, e)    # if s_M is not given it will be yielded by the function.

Echinophoria/DEB_output documentation built on Nov. 19, 2019, 10:46 p.m.