PBR: Function for finding PBR quota

Description Usage Arguments Value

View source: R/catch.options.R

Description

Finding Potential Biological Removal (PBR) quotas

Usage

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PBR(
  n0 = n0,
  n1 = n1,
  se0 = se0,
  se1 = se1,
  rMax = 0.12,
  Fr = 0.5,
  quota = c(0.14, 1 - 0.14),
  cv = NA
)

Arguments

n0

Estimated current population size of 0 animals

n1

Estimated current population size of 1+ animals

se0

Standard error of estimate for n0

se1

Standard error of estimate for n1

rMax

Maximum rate of population increase (by default 0.12, commonly used for pinnipeds)

Fr

Assumed recovery factor

quota

Proportional catch of 0 and 1+ animals

Value

Returns Minimum projected population size (Nmin) and Potential Biological Removal (PBR), along with the PBR divided by 0 and 1+ animals given specified quota


NorskRegnesentral/rSPAMM documentation built on Nov. 16, 2020, 10:58 p.m.