Pacific Salmon Coded-Wire Tag Recovery Data

Fisheries and Oceans Canada maintains the Coded-Wire Tag database, a centralized system for adult salmon escapement data. It links recovered tags to specific catch locations, dates, fishery types, and biological information. Data is submitted annually by sampling agencies to the RMPC.

Use Cases

• Modeling salmon migration routes by analyzing recovery locations linked to tag release points.
• Estimating fishery-specific harvest rates by correlating tag recovery counts with total catch data.
• Analyzing annual escapement trends using time-series data of tag recoveries.
• Studying the relationship between biological data recorded at recovery and factors like catch date and location.

Strengths

• Data is submitted annually by multiple sampling agencies, ensuring regular updates.
• Records include an estimated number of fish derived from sampling ratios, providing a quantitative measure.

Limitations

• The exact number of rows, columns, and total data size is unknown, limiting an assessment of scope.
• Data completeness relies on annual submissions from various agencies, which may introduce reporting gaps.

Provenance

Source

Fisheries and Oceans Canada

Collection Method

Tags are physically removed from fish, decoded, and associated catch data is recorded by sampling agencies.

Freshness

Updated yearly based on agency submissions.

Geography

Pacific Region