gislason: gislason

In flr/FLife: Methods for Modelling Life History Traits

gislason

Description

gislason natural mortality relatoinship estimate M as a function of length. M=a*length^b;

Usage

## S4 method for signature 'FLQuant,numeric'
gislason(length, params, a = 0.55, b = 1.44, c = -1.61, ...)

Arguments

length	mass at which M is to be predicted
params	FLPar with two values; i.e. a equal to M at unit mass and b a power term; defaults are a=0.3 and b=-0.288
a	0.55
b	1.44
c	-1.61
...	any other arguments

See Also

lorenzen

Examples

## Not run: 
params=lhPar(FLPar(linf=111))
len=FLQuant(c( 1.90, 4.23, 7.47,11.48,16.04,20.96,26.07,31.22,
               36.28,41.17,45.83,50.20,54.27,58.03,61.48,64.62),
             dimnames=list(age=1:16))
gislason(length,params)

## End(Not run)

flr/FLife documentation built on March 29, 2024, 5:50 p.m.