nutrient_efficiency_block: Compute efficiency metrics for a single nutrient

In fb4package: 'Fish Bioenergetics 4.0' Model Implementation with High-Performance 'TMB' Backend

Compute efficiency metrics for a single nutrient

Description

Internal helper that calculates retention, excretion, and growth efficiencies from raw flux values. Used by calculate_nutrient_efficiencies() to avoid duplicating the identical calculation for nitrogen and phosphorus.

Usage

nutrient_efficiency_block(consumed, growth, excretion, assimilated)

Arguments

consumed	Total nutrient consumed (same units as other flux args).
growth	Nutrient retained in growth.
excretion	Nutrient lost via excretion.
assimilated	Nutrient assimilated (consumed minus egested).

Value

Named list: retention_efficiency, excretion_rate, growth_efficiency.

fb4package documentation built on May 8, 2026, 1:07 a.m.