Chinook Salmon Conservation Units and Status in Canada

This dataset describes Conservation Units (CUs) for Chinook salmon on Canada's Pacific coast, defined by ecotypology, life history, and genetics. It includes CU boundaries, associated counting sites for spawner escapement data, and WSP status zone assessments (Red, Amber, Green). The CU boundaries were updated in March 2023 using the BC Freshwater Atlas at a 1:20,000 scale.

Use Cases

• Map CU boundaries and associated counting sites for spatial analysis of salmon distribution.
• Analyze the relationship between CU status zones (Red, Amber, Green) and underlying ecological or life history characteristics.
• Link CU data with spawner enumeration data from the New Salmon Escapement Database (NuSEDS) via counting sites for population trend analysis.
• Assess the application of the joint adaptive zone ecotypology framework across different CUs.

Strengths

• CU boundaries are defined at a detailed 1:20,000 scale from the BC Freshwater Atlas.
• Data incorporates a multi-axis framework (ecotypology, life history, genetics) for defining biological units.
• Includes formal status assessments (WSP status zones) to indicate conservation priority.

Limitations

• The dataset does not contain the raw spawner count data, only the structure (CUs, sites) for organizing it.
• CU boundaries are subject to review and change, which may affect longitudinal analysis.
• Sample data and specific record counts (rows, columns) are unavailable for review.

Provenance

Source

Fisheries and Oceans Canada.

Collection Method

CUs defined using a framework aggregating ecological, life history, and genetic characteristics; boundaries derived from the BC Freshwater Atlas.

Time Range

null

Freshness

Last updated March 2023, with a metadata record refresh in March 2026.

Geography

Canada's Pacific coast.