South Coast Area BC Chinook Reference Fishery Biological Data
The Chinook Reference Fishery is a Pacific Salmon Strategy Initiative (PSSI)-funded, multi-year monitoring program initiated in 2023 to assess Chinook Salmon catch in South Coast BC Chinook mark-selective fisheries (MSFs). The objective of the program is to estimate the proportion of Chinook caught and released at sea (by size class), the mark rate (i.e., the proportion of hatchery-marked Chinook encountered), and the stock composition of sampled fish. Reference Fishery data will be used to evaluate the fishery-dependent estimates produced from the South Coast Area recreational catch monitoring (creel) program. This dataset contains detailed information for each Chinook Salmon sampled during the reference fishery.
Each record includes: the catch date, which is the date the fish was sampled, and the creel sub-area, identifying the geographic location where the fish was caught. The adipose fin clipped field indicates whether the fish had a clipped adipose fin (“Y” for clipped, “N” for intact). The length (cm) column provides the fork length of the fish, measured from the tip of the nose to the fork in the tail. Genetic stock identification reported at both fine and broad spatial scales.
The “DNA Stock X” columns represents the stock-level scale. Each fish may have up to five individual stock-level assignments based on DNA analysis, ranked from highest to lowest probability. The DNA Stock 1 column lists the most likely stock assignment—typically at the river or hatchery level—along with its associated DNA Stock Region 1, and the corresponding Probability 1, which indicates the likelihood of that assignment being correct. Similarly, DNA Stock 2, DNA Stock Region 2, and Probability 2 report the second most likely assignment and so on, down to DNA Stock 5, DNA Stock Region 5, and Probability 5.
The “resolved stock region” represents the broader stock region and aligns closely with Canada's Stock Management Units (SMUs), which are used in salmon Integrated Fisheries Management Plans (IFMPs) and is the most appropriate for identifying stocks of concern. The “resolved stock region” is determined by summing the probability of all DNA stock assessments that corresponds to the same region. The region with the highest summed probability becomes the “resolved stock region”. The “resolved stock region probability” is the summed probability of all DNA stock Region assignments that correspond to this “resolved stock region”, providing a quantitative measure of confidence in the regional assignment.
In cases where Probability 1 equals 1 and all subsequent probabilities are “NA,” the stock assignment was made deterministically through parentage-based tagging rather than statistical inference and therefore carries no associated uncertainty.
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Additional Info
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| Last Updated | October 20, 2025, 02:11 (UTC) |
| Created | October 20, 2025, 02:11 (UTC) |
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Domain / Topic
Domain or topic of the dataset being cataloged.
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Title
Title for the Dataset.
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South Coast Area BC Chinook Reference Fishery Biological Data |
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Description
A description of the dataset.
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The Chinook Reference Fishery is a Pacific Salmon Strategy Initiative (PSSI)-funded, multi-year monitoring program initiated in 2023 to assess Chinook Salmon catch in South Coast BC Chinook mark-selective fisheries (MSFs). The objective of the program is to estimate the proportion of Chinook caught and released at sea (by size class), the mark rate (i.e., the proportion of hatchery-marked Chinook encountered), and the stock composition of sampled fish. Reference Fishery data will be used to evaluate the fishery-dependent estimates produced from the South Coast Area recreational catch monitoring (creel) program. This dataset contains detailed information for each Chinook Salmon sampled during the reference fishery. Each record includes: the catch date, which is the date the fish was sampled, and the creel sub-area, identifying the geographic location where the fish was caught. The adipose fin clipped field indicates whether the fish had a clipped adipose fin (“Y” for clipped, “N” for intact). The length (cm) column provides the fork length of the fish, measured from the tip of the nose to the fork in the tail. Genetic stock identification reported at both fine and broad spatial scales. The “DNA Stock X” columns represents the stock-level scale. Each fish may have up to five individual stock-level assignments based on DNA analysis, ranked from highest to lowest probability. The DNA Stock 1 column lists the most likely stock assignment—typically at the river or hatchery level—along with its associated DNA Stock Region 1, and the corresponding Probability 1, which indicates the likelihood of that assignment being correct. Similarly, DNA Stock 2, DNA Stock Region 2, and Probability 2 report the second most likely assignment and so on, down to DNA Stock 5, DNA Stock Region 5, and Probability 5. The “resolved stock region” represents the broader stock region and aligns closely with Canada's Stock Management Units (SMUs), which are used in salmon Integrated Fisheries Management Plans (IFMPs) and is the most appropriate for identifying stocks of concern. The “resolved stock region” is determined by summing the probability of all DNA stock assessments that corresponds to the same region. The region with the highest summed probability becomes the “resolved stock region”. The “resolved stock region probability” is the summed probability of all DNA stock Region assignments that correspond to this “resolved stock region”, providing a quantitative measure of confidence in the regional assignment. In cases where Probability 1 equals 1 and all subsequent probabilities are “NA,” the stock assignment was made deterministically through parentage-based tagging rather than statistical inference and therefore carries no associated uncertainty. |
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Format (CSV, XLS, TXT, PDF, etc)
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Metadata Identifier
Metadata identifier – can be used as the unique identifier for catalogue entry
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Published Date
Published date of the dataset.
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2025-06-09 |
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Time Period Data Span (start date)
Start date of the data in the dataset.
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Time Period Data Span (end date)
End date of time data in the dataset.
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GeoSpatial Area Data Span
A spatial region or named place the dataset covers.
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Access category
Type of access granted for the dataset (open, closed, service, etc).
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License
License used to access the dataset.
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Open Government Licence - Canada |
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Limits on use
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Location
Location of the dataset.
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https://open.canada.ca/data/en/dataset/61c8c2cd-ca46-457f-aaf2-052d20e1622d |
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Data Service
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Owner
Owner of the dataset.
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Fisheries and Oceans Canada | Pêches et Océans Canada |
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Contact Point
Who to contact regarding access?
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Contact Point Email
The email to contact regarding access?
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Publisher
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Publisher Email
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[email protected] |
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Author
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Author Email
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Accessed At
Date the data and metadata was accessed.
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Identifier
Unique identifier for the dataset.
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Language
Language(s) of the dataset
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Link to dataset description
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Persistent Identifier
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Globally Unique Identifier
Data is identified by a persistent and globally unique identifier.
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Contains data about individuals
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Contains data about identifiable individuals
Does the data hold identifiable data about individual?
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Contains Indigenous Data
Does the data hold data about Indigenous communities?
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Portal Type
Platform type of the source portal.
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Version
Version of the datatset
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None |
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Source
Source of the dataset.
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None |
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Version notes
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Is version of another dataset
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Other versions
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Provenance Text
Provenance Text of the data.
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Provenance URL
Provenance URL of the data.
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Temporal resolution
Describes how granular the date/time data in the dataset is.
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GeoSpatial resolution in meters
Describes how granular (in meters) geospatial data is in the dataset.
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GeoSpatial resolution (in regions)
Describes how granular (in regions) geospatial data is in the dataset.
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Indigenous Community Permission
Who holds the Indigenous Community Permission. Who to contact regarding access to a dataset that has data about Indigenous communities.
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Community Permission
Community permission (who gave permission).
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The Indigenous communities the dataset is about
Indigenous communities from which data is derived.
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Number of data rows
If tabular dataset, total number of rows.
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Number of data columns
If tabular dataset, total number of unique columns.
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Number of data cells
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Number of data relations
If RDF dataset, total number of triples.
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Number of entities
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Number of data properties
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Data quality
Describes the quality of the data in the dataset.
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Metric for data quality
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