haddock

The <code>haddock</code> data frame has 15 rows and 4 columns.
Age, weight at spawning, partial recruitment, and fraction mature data for haddock (Melanogrammus aeglefinus) used by Gabriel et al. (1989) 
to calculate spawning stock biomass-per-recruit.

datasets

Functions for applying a wide range of fisheries stock assessment methods.

Gary Nelson

fishmethods

Fishery Science Methods and Models

haddock function

This data frame contains the following columns:<dl>
<dt>age</dt>
<dd>vector of ages</dd><dt>ssbwgt</dt>
<dd>vector of weights at spawning for each age</dd><dt>partial</dt>
<dd>partial recruitment vector</dd><dt>pmat</dt>
<dd>vector of fraction of females mature at age</dd></dl>

Format

Biological data for haddock (Melanogrammus aeglefinus) — haddock

This data frame contains the following columns:<dl>
<dt>age</dt>
<dd>vector of ages</dd>

<dt>ssbwgt</dt>
<dd>vector of weights at spawning for each age</dd>

<dt>partial</dt>
<dd>partial recruitment vector</dd>

<dt>pmat</dt>
<dd>vector of fraction of females mature at age</dd>



</dl>

haddock: Biological data for haddock (Melanogrammus aeglefinus)

Description

Usage

Arguments

Format