Method ssbpurec

Description

Calculates the Spawning Stock Biomass per unit recruit for an FLStock object.

The method calculates SSB per recruit at zero fishing mortality.

Generic function

ssbpurec(object)

Method arguments

object :

an object of class FLStock.

start, end :

The first and last year over which SSB per recruit is to be calculated. By default the first and last year of the FLStock object are used.

type :

The type of calculation to perform. Currently only non-parm (non parametric) is supported whereby the SSB per recruit is calculated using mean values over the specified time period.

recs :

The proportion of the year in which recruitment occurs.

spwns :

The proportion of the year in which spawning occurs.

plusgroup :

Is the last age a plusgroup TRUE/FALSE

Methods

signature(object=FLStock) :

Returns the SBB-per-unit-recruit.

Author(s)

The FLR Team

See Also

FLStock-class

Examples

data(ple4)
ssbpurec(ple4)

ssbpurec(ple4, start=1980, end=2000)