herring_spawning_biomass: Pacific Herring annual spawning stock biomass (males and...

In pbs-assess/PACea: An R package of Pacific ecosystem information to help facilitate an ecosystem approach to fisheries management

Pacific Herring annual spawning stock biomass (males and females) as estimated by the most recent stock assessment for each of the five major stock assessment regions.

Description

Spawning biomass is calculated for each major stock assessment region separately, and is calculated for males and females combined. Note that in the assessment (DFO, 2024) spawning biomass is calculated for 2024, but that is a projection assuming zero catch, and so is excluded here.

Usage

herring_spawning_biomass

herring_spawning_biomass_2023

Format

A tibble also of class 'pacea_herring_biomass' with columns:

year:

year of the estimate of spawning stock biomass (males and females)

low:

low end (5th percentile) of the 90% credible interval for biomass, units as for 'median'

median:

median estimate of spawning biomass, in thousands of tonnes of spawning biomass

high:

high end (95th percentile) of the 90% credible interval for biomass, units as for 'median'

An object of class pacea_biomass_herring (inherits from tbl_df, tbl, data.frame) with 365 rows and 5 columns.

Details

See '?herring_recruitment' for further details and references, and explanations of 'herring_spawning_biomass_2023'.

Author(s)

Andrew Edwards

Source

Generated from Andy running 'data-raw/herring/herring.R', which uses model results provided by Matthew Grinnell.

Examples

## Not run: 
herring_spawning_biomass
plot(herring_spawning_biomass)
plot(herring_spawning_biomass, region = "HG")

## End(Not run)

pbs-assess/PACea documentation built on April 17, 2025, 11:36 p.m.