calculate_weight_dependent_mortality

Adjusts mortality based on current fish weight

internal

An implementation of the 'Fish Bioenergetics 4.0' framework
described in Deslauriers et al. (2017)
<doi:10.1080/03632415.2017.1377558>. Provides automated parameter
optimization, multi-prey diet modeling, and comprehensive energy budget
simulations for fisheries research and aquaculture applications. An
optional 'TMB' (Template Model Builder) backend delivers 10-50x speedup
in maximum likelihood estimation while maintaining full backward
compatibility. Includes species-specific parameter databases and tools
for modeling fish growth, consumption, and metabolism under varying
environmental conditions.

Hans Ttito

fb4package

'Fish Bioenergetics 4.0' Model Implementation with
High-Performance 'TMB' Backend

calculate_weight_dependent_mortality function

<dl><dt>current_weight</dt>
<dd>Current weight (g)</dd>
<dt>base_mortality</dt>
<dd>Base daily mortality rate</dd>
<dt>weight_threshold</dt>
<dd>Weight threshold below which mortality increases</dd>
<dt>starvation_factor</dt>
<dd>Multiplication factor for starvation</dd>
<dt>initial_weight</dt>
<dd>Initial weight for comparison (optional)</dd></dl>

Arguments

Calculate weight-dependent mortality (Low-level) — calculate_weight_dependent_mortality

<dl>

<dt>current_weight</dt>
<dd>Current weight (g)</dd>


<dt>base_mortality</dt>
<dd>Base daily mortality rate</dd>


<dt>weight_threshold</dt>
<dd>Weight threshold below which mortality increases</dd>


<dt>starvation_factor</dt>
<dd>Multiplication factor for starvation</dd>


<dt>initial_weight</dt>
<dd>Initial weight for comparison (optional)</dd>

</dl>

calculate_weight_dependent_mortality: Calculate weight-dependent mortality (Low-level)

Description

Usage

Value

Arguments