harvest: Methods to calculate fishing mortalities

In iagomosqueira/FLFishery: Classes and Methods for Simpler Fleet/Fishery Modelling

Methods to calculate fishing mortalities

Description

Fishing mortalities and harvest rates can be calculated for a combination of FLBiol and FLFishery/FLFisheries using the harvest() method.

Usage

harvests(object, catches, ...)

## S4 method for signature 'FLBiol,FLFisheries'
harvests(object, catches, fcb = rep(1, length(catches)), units = c("f", "hr"))

## S4 method for signature 'FLBiol,FLFishery'
harvest(object, catch, fcb = 1)

## S4 method for signature 'FLBiol,FLFisheries'
harvest(object, catch, fcb = 1)

## S4 method for signature 'FLBiols,FLFisheries'
harvest(object, catch, fcb = FCB(object, catch))

## S4 method for signature 'FLBiols,FLFishery'
harvest(object, catch, fcb = FCB(object, FLFisheries(catch)))

## S4 method for signature 'FLBiol,FLCatch'
harvest(object, catch)

## S4 method for signature 'FLBiol'
fbar(
  object,
  fisheries,
  range = dims(object)[c("min", "max")],
  minfbar = range$min,
  maxfbar = range$max,
  ...
)

## S4 method for signature 'FLBiols'
fbar(
  object,
  fisheries,
  range = lapply(object, function(x) dims(x)[c("min", "max")]),
  ...
)

Arguments

object	Object containing population abundances, of class FLBiol.
catches	Object containing catches in number of the population represented by object, class FLFisheries.
...	Other things
fcb	A vector indicating the correspondance, by position of name, between object and the FLCatch elements inside catches, and of the same length.
units	Should output be in terms of fishing mortaloty ('f') or harvest rate ('hr').
catch	Object containing catches in number of the population represented by object, class FLFishery.

Details

The calculated fishing mortalities, or havest rates, are returned, in the case of harvest, disaggregated by fishery, as an FLQuants list. For a single FLFishery object, a single FLQuant is obtained.

Value

An object of class FLQuant or FLQuants.

Author(s)

The FLR Team

See Also

FLCore::harvest()

Examples

data(nsfishery)
harvests(ple, nsfleet)
harvest(ple, nsfleet[["bt"]], fcb="ple")
harvest(ple, nsfleet)
data(nsfishery)
bis <- FLBiols(ple=ple, sol=sol)
harvest(bis, nsfleet)
harvest(bis, nsfleet[[1]])
harvest(ple, nsfleet[["bt"]][["ple"]])
fbar(ple, fisheries=nsfleet, minfbar=3, maxfbar=6)
fbar(ple, fisheries=nsfleet[["bt"]], minfbar=3, maxfbar=6)
fbar(FLBiols(ple=ple, sol=sol), nsfleet)

iagomosqueira/FLFishery documentation built on Nov. 10, 2023, 6:37 p.m.