Pacific Salmon Scale Circulus Spacing Index Data

This dataset supports research on size-selective mortality in Pacific salmon, using a scale circulus spacing index (SCSI) as a proxy for body size. It was created by Terry D. Beacham and published in 2020. The data is used to test hypotheses about critical size limits and mortality during the first marine winter.

Use Cases

• Analyze SCSI distributions to test for shifts in mean, variance, and skewness indicative of size-selective mortality.
• Model the relationship between juvenile sample size, mortality rate, and the percentage of adults exceeding the juvenile SCSI maximum.
• Investigate geographical stratification of juvenile Pacific salmon by SCSI values to assess migration timing hypotheses.

Strengths

• Data is openly licensed under CC0-1.0, facilitating unrestricted reuse and analysis.
• Focuses on a specific, well-defined biological index (SCSI) for studying a key ecological hypothesis.
• Associated with peer-reviewed research examining mortality drivers in Pacific salmon.

Limitations

• The specific data structure, including row count, column names, and file formats, is unknown from the provided input.
• Input description is theoretical and simulation-based, so the empirical data scope and sample sizes are unclear.
• Geographic coverage for any empirical samples is not specified, limiting spatial analysis.

Provenance

Source

Dryad digital repository.

Collection Method

null

Time Range

null

Freshness

null

Geography

Pacific Ocean (implied from study of Pacific salmon).