ypr_yield: Yield

In ypr: Yield Per Recruit

Yield

Description

Calculates the yield for a population.

Usage

ypr_yield(object, Ly = 0, harvest = TRUE, biomass = FALSE, ...)

Arguments

object	The population or populations.
Ly	The minimum length (trophy) fish to consider when calculating the yield (cm).
harvest	A flag specifying whether to calculate the yield for harvested fish or captures.
biomass	A flag specifying whether to calculate the yield in terms of the biomass versus number of individuals.
...	Unused parameters.

Details

By default, with Rmax = 1 the number of individuals is the proportion of the recruits at the carrying capacity. If the yield is given in terms of the biomass (kg) then the scaling also depends on the value of Wa (g).

Value

The yield as number of fish or biomass.

See Also

Other yield: ypr_plot_yield(), ypr_tabulate_yield(), ypr_yields()

Other calculate: ypr_age_at_length(), ypr_exploitation(), ypr_length_at_age(), ypr_optimize(), ypr_yields()

Examples

ypr_yield(ypr_population())
ypr_yield(ypr_ecotypes(Linf = c(100, 200)))

ypr documentation built on Aug. 30, 2022, 1:11 a.m.