calc.WatZ.2014: Convert Tanner crab size to weight based on the 2014...

In wStockhausen/tcsamFunctions: Functions related to the BSAI Tanner crab stock assessment (2015+)

Convert Tanner crab size to weight based on the 2014 assessment (Rugolo and Turnock)

Description

Power-law functions for Tanner crab weight-at-size (g) by sex and maturity based on the 2014 assessment (Rugolo and Turnock's parameters).

Usage

calc.WatZ.2014(
  z,
  sex,
  maturity,
  male = list(immature = list(a = 0.00016, b = 3.136), mature = list(a = 0.00016, b =
    3.136)),
  female = list(immature = list(a = 0.00064, b = 2.794), mature = list(a = 0.00034, b =
    2.956))
)

Arguments

z	: vector of sizes (mm CW)
sex	: 'MALE' or 'FEMALE'
maturity	: 'IMMATURE' or 'MATURE'
male	: list of regression coefficients for immature, mature crab (see details)
female	: list of regression coefficients for immature, mature crab (see details)

Details

'male' and 'female' are lists with named elements 'a' and 'b', whose values reflect the parameters in the eq: w = a \cdot z^b

Value

a vector of weights corresponding to the input sizes

wStockhausen/tcsamFunctions documentation built on Jan. 28, 2024, 9:01 a.m.