Juvenile Atlantic Salmon Electrofishing Survey Data 1974-2024

1974 to 2024 raw electrofishing survey data monitors juvenile Atlantic salmon densities in Southeast New Brunswick. The dataset includes counts, lengths, weights, and effort data collected by Fisheries and Oceans Canada. Sampling intensity varies annually and across rivers.

Use Cases

• Modeling juvenile salmon density trends over time using species counts and spatial point data.
• Analyzing relationships between fish lengths and weights for biological condition assessments.
• Assessing habitat suitability by correlating species counts with specific geospatial sampling points.
• Evaluating sampling effort variation among years and rivers using effort investment records.

Strengths

• 50-year temporal coverage from 1974 to 2024.
• Includes multiple biological parameters: species counts, fish lengths, and fish weights.

Limitations

• Sample size and row count are unknown.
• Sampling intensity varies among years and rivers, potentially introducing bias.
• Data collection focused on salmon habitat, making other species captures incidental.

Provenance

Source

Fisheries and Oceans Canada

Collection Method

Electrofishing surveys using successive removal sampling and catch per unit effort methods.

Time Range

1974 to 2024

Freshness

Data updated to 2024.

Geography

Southeast New Brunswick (SFA 16B)