Shiny App for exploring alternative harvest rule types.
The app is available online at https://solv-code.shinyapps.io/harveststrategytypes/
New for Version 2.0
- additional HCR types
- option to compare two alternative HCR directly
- option to create plots without abundance overlay (just clear the 'Run-med' input)
This app illustrates different types of harvest strategies for Pacific salmon (Sockeye, Chinook, Coho, Chum, Pink). These species are anadromous (spawn in freshwater, migrate to the ocean, then return for spawning) and semelparous (spawn only once, then die). Harvest targets for each year's returning run of salmon are typically set based on a spawning target or an exploitation rate target. Targets may be fixed or change with abundance.
Supporting information is being compiled in the wiki pages
The app displays different types of harvest strategy, and shows the implied targets at different levels of abundance. For example, if a stock is managed to a fixed escapement target of 30,000, what are the implied exploitation rate and catch targets at 5,000 or 50,000 or 150,000 run size?
Users can change the specifications for each type of harvest rule (e.g. set the fixed exploitation rate, or set the steps for a stepped ER rule) and vary the abundance estimate (e.g. median and lower/upper bounds on in-season run size estimate).
Additional harvest strategy types and diagnostic plots will be added over time. You can follow progress at this thread and request features at this thread.
To cite the app directly, use:
G. Pestal, C. Carr-Harris, and A.-M. Huang. 2025. An interactive tool for exploring alternative harvest rule types for Pacific Salmon. Available online at https://solv-code.shinyapps.io/harveststrategytypes
If you need a permament digital object identifier (doi), cite the Zenodo release of the Github repository:
SOLV-Code. (2025). SOLV-Code/Harvest-Strategy-Types: Major Update - Spring 2025 (v2.0). Zenodo. https://doi.org/10.5281/zenodo.14920042
