Work in progress repository developed for the marine fishes subcommittee of the Committee on the Status of Endangered Wildlife in Canada (COSEWIC) to support prioritization of Pacific salmon Designatable Units (DUs) for status assessments.
Repository sources and wrangles data on Pacific salmon spawner abundance (mature individuals) over time from various sources, calculate rates of change in individuals over time at the DU scale, estimates percent change over the most recent three generations, and summarizes this information in an html document.
probable-status.Rmd: Sources data, wrangles it, calculates rates of change by DU, summarizes probable status and associated DU level metadata. Renders html document.data: DU metadata and associated time series of mature individuals. Sourced from here, original data sources detailed in data sources.output: All outputs including master .csv of percent change in mature individuals and probable DU status designations, stand alone plots of mature individuals over time by species and region.
If you just want to explore a summary of probable designations based on currently available data view the rendered HTML document. The master table of probable (or COSEWIC assessed) status, rates of change, etc., all by DU can be found here: ./output/master-prob-status/master-status.csv.
Data on mature individuals, DU-CU mapping, and associated metadata are sourced from another repository with the data in the Pacific Salmon Explorer and other published sources (e.g., Yukon Chinook). Original sources of data are detailed below.
| Region (species) | Source |
|---|---|
| Yukon (Chinook) | Connors BM, Siegle MR, Harding J, Rossi S, Staton B, Jones M, Bradford M, Browne R, Bechtol B, Doherty B and S Cox. Chinook salmon diversity contributes to fishery stability and trade‐offs with mixed‐stock harvest. 2022. Ecological Applications. [link] JTC (Joint Technical Committee of the Yukon River U.S./Canada Panel). 2023. “Yukon River Salmon 2022 Season Summary and 2023 Season Outlook.” Alaska Department of Fish and Game, Division of Commercial Fisheries, Regional Information Report 3A21-01, Anchorage.[link] |
| Nass (pink, chum, coho, Chinook) | Connors K, Hertz E, Jones E, Honka L, Kellock K, and R Alexander. 2019. The Nass Region: Snapshots of salmon population status. The Pacific Salmon Foundation, Vancouver, BC, Canada.[link] |
| Skeena/Nass (sockeye) | Pestal GP, Carr-Harris C, Cox-Rogers S, English K, Alexander R and the Skeena Nass Sockeye Technical Working Group. 2022. 2021 Review of Spawner and Recruit Data for Sockeye Salmon (Oncorhynchus nerka) from the Skeena and Nass Basins, British Columbia. Can. 20 Tech. Rep. Fish. Aquat. Sci. [link] |
| Skeena (pink, chum, coho, Chinook) | English K, Peacock D, Challenger W, Noble C, Beveridge I, Robichaud D, Beach K, Hertz E and K Connors. 2018. North and Central Coast Salmon Escapement, Catch, Run Size and Exploitation Rate Estimates for each Salmon Conservation Unit for 1954-2017. [link] Winther et el. 2024. An assessment of Skeena River chinook salmon using genetic stock identification 1984 to 2020. [link} |
| Haida Gwaii and Central Coast (all species) | English K, Peacock D, Challenger W, Noble C, Beveridge I, Robichaud D, Beach K, Hertz E and K Connors. 2018. North and Central Coast Salmon Escapement, Catch, Run Size and Exploitation Rate Estimates for each Salmon Conservation Unit for 1954-2017. [link] |
| Central Coast (South Atnarko Lakes sockeye) | Connors B, Atlas W, Melymick C, Moody M, Moody J and A Frid. 2019. Conservation risk and uncertainty in recovery prospects for a collapsed and culturally important salmon population in a mixed‐stock fishery. Marine and Coastal Fisheries, 11(6): 423-436. [link] |
| Vancouver Island and Mainland Inlets (pink, chum, coho, sockeye) | Fisheries and Oceans unpublished data. Contact: Pieter van Will, Diana Dobson (Sproat and Great Central sockeye) |
| Vancouver Island, Mainland Inlets, and Fraser River (Chinook) | Brown GS, Thiess ME, Wor C, Holt CA, Patten B , Bailey RE, Parken CK, Baillie SJ, Candy JR, Willis DM, Hertz E, Connors B, and Pestal GP. 2020. 2020 Summary of Abundance Data for Chinook Salmon (Oncorhynchus tshawytscha) in Southern British Columbia, Canada.. Can. Tech. Rep. Fish. Aquat. Sci. 3401: xiii + 214 p. [link] |
| Fraser River (sockeye and pink) | Pacific Salmon Commission unpublished data. Contact: Fiona Martins |
| Fraser River (coho) | Korman J, Sawada J, and MJ Bradford. 2019. Evaluation framework for assessing potential Pacific Salmon Commission reference points for population status and associated allowable exploitation rates for Strait of Georgia and Fraser River Coho Salmon Management Units. DFO Can. Sci. Advis. Sec. Res. Doc. 2019/001. ix + 81 p. [link] |
| Columbia River (sockeye) | Fisheries and Oceans unpublished data. Contact: Athena Ogden |
| Columbia River (Chinook) | Matylewich M, Oatman M, Parken C, Riddell B, Tweit B, Wright H, Baldwin C, Garrison T, Lothrop R, and E McGrath. 2019. A Summary of Okanagan Chinook Information Requested by the Pacific Salmon Commission. Pacific Salmon Comm. Tech. Rep. No. 42: 89 p. [link] |