British Columbia Geoduck Age and Size Measurements from 41 Sites, 1993-2002

British Columbia biological samples of Geoduck clams (Panopea generosa) were collected from 41 locations between 1993 and 2002. The dataset contains individual clam measurements for total weight, shell length, shell weight, and age, supporting analysis of population structure and growth parameters.

Use Cases

• Model age-length relationships using shell length and age data to estimate Geoduck growth rates.
• Analyze population size structure by examining the distribution of total weight and shell weight across 41 sampled locations.
• Investigate regional variations in growth parameters by correlating shell length and age measurements with specific collection sites.
• Assess biomass and condition indices by calculating ratios between total weight and shell weight for individual clams.

Strengths

• Data spans a 10-year time range from 1993 to 2002, providing a longitudinal view.
• Samples were collected from 41 distinct locations throughout British Columbia, offering geographic breadth.
• Includes multiple biological measurements per clam: total weight, shell length, shell weight, and age.

Limitations

• The exact number of sampled clams (rows) is unknown, limiting assessment of statistical power.
• Data collection ended in 2002, making the information over two decades old and potentially not reflective of current populations.
• Specific column definitions and data formats (e.g., units of measurement) are not detailed in the input.

Provenance

Source

Fisheries and Oceans Canada

Collection Method

Biological samples collected during Geoduck clam surveys to determine density, distribution, and population structure.

Time Range

1993 to 2002

Freshness

Data collection period ended in 2002; the metadata record was last updated in March 2026.

Geography

41 locations throughout British Columbia, Canada