get_tb: Scaled length and age at birth

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

Usage

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get_tb(p, f)

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)) in the same order. For symbol meaning check code and documentation of get_DEB_pars

f

Scaled functional response at which the variables are to be calculated (see Kooijman 2010 for a definition of f). It is a value between 0 and 1. For embryo development this f relates to the condition of the mother and energy provision (initial reserves in the egg) and not to the food in the environment during embryo development

Value

This function return a named list containing scaled lengths and ages at the different key stages (birth, metamorphosis, puberty, etc)

lb

scaled length at birth, start of exogenous feeding

tb

scaled age at birth, start of exogenous feeding

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

References

Aguera A, Collard M, Jossart Q, Moreau C, Danis B (2015) Parameter Estimations of Dynamic Energy Budget (DEB) Model over the Life History of a Key Antarctic Species: The Antarctic Sea Star Odontaster validus Koehler, 1906 (ed Thuesen E V.). Plos One, 10, e0140078.

DEBlab, http://http://www.bio.vu.nl/thb/deb/deblab/

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_tj get_tp get_DEB_pars

Examples

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### get the parameters for the species
pars = get_DEB_pars('results_Odontaster_validus.mat')

### get scaled lengths and ages at f=1 (no food limitation)
f = 1
ltr = get_tb(pars, f)

### unscaling lengths to structural lengths (see Kooijman 2010 for definition of structural length)
Lb = ltr$lb * pars$L_m        # cm, structural length at birth

### unscaling ages and correcting for temperature
ab = ltr$tb / pars$k_M        # d, age at birth for the reference temperature (T_ref in pars) (in days from fertilization)
T_C = t_corr(pars, 285)       # -, correction factor to get pars at 285K
aTb = ab / T_C                # d, age at birth when development occurs at a temperature of 285K.

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