HarvDec1: Harvest decision model - assuming population estimates (i.e....

In ErlendNilsen/MSEtools: A collection of tools used when building (generalized) MSE models

Description

Select harvest decision model (proportional harvest, constant quota, proportional threshold or threshold harvesting) to be applied, and set control parameters determine the size of the qouta (i.e. the Total Allowable Catch - TAC).

Usage

HarvDec1(HD_type = "A", c = 1000, qu = 0.2, PopState_est = 100)

Arguments

HD_type	Type of harvest decision model, being one of three: A: Proportional harvest (i.e. constant harvest mortality) B: Threshold harvest (no harvest when bellow threshold c) C: constant quota harvest (i.e. remove same number of individuals regardless of pop. size) D: Proportional threshold harvest (i.e. removal of a proportion of the popualation above the threshold).
c	Threshold in the threshold harvest model and proportional threshold model
qu	Depending on type of harvest model: for proportional harvest, this is the harvest rate, for constant quota this is the number of individuals removed. For proportional threshold harvest, this is the proportion above the threshold that is removed. Not relevant for (absolute) threshold harvesting
PopState_est	The (estimated) population size available to managers when making decision

Value

TAC Total allowable catch emerging from model and parameters

ErlendNilsen/MSEtools documentation built on May 6, 2019, 4:03 p.m.