ypr_yield

An object of class <code><a rd-options="=ypr_population" href="/link/ypr_population()?package=ypr&version=0.5.2&to=%3Dypr_population" data-mini-rdoc="=ypr_population::ypr_population()">ypr_population()</a></code>.

population

The minimum length (trophy) fish to consider when calculating the yield (cm).

A flag specifying whether to calculate the yield for harvested fish or captures.

harvest

A flag specifying whether to calculate the yield in terms of the biomass versus number of individuals.

biomass

Calculates the yield for a population.

An implementation of equilibrium-based yield per recruit
methods. Yield per recruit methods can used to estimate the optimal
yield for a fish population as described by Walters and Martell (2004)
<isbn:0-691-11544-3>. The yield can be based on the number of fish
caught (or harvested) or biomass caught for all fish or just large
(trophy) individuals.

Joe Thorley

Yield Per Recruit

Poisson Consulting 

ypr_yield function

<dl><dt>population</dt>
<dd>An object of class <code>ypr_population()</code>.</dd>
<dt>Ly</dt>
<dd>The minimum length (trophy) fish to consider when calculating the yield (cm).</dd>
<dt>harvest</dt>
<dd>A flag specifying whether to calculate the yield for harvested fish or captures.</dd>
<dt>biomass</dt>
<dd>A flag specifying whether to calculate the yield in terms of the biomass versus number of individuals.</dd></dl>

Arguments

Yield — ypr_yield

<dl>

<dt>population</dt>
<dd>An object of class <code>ypr_population()</code>.</dd>


<dt>Ly</dt>
<dd>The minimum length (trophy) fish to consider when calculating the yield (cm).</dd>


<dt>harvest</dt>
<dd>A flag specifying whether to calculate the yield for harvested fish or captures.</dd>


<dt>biomass</dt>
<dd>A flag specifying whether to calculate the yield in terms of the biomass versus number of individuals.</dd>

</dl>

ypr_yield: Yield

Description

Usage

Value

Arguments

Details

See Also

Examples