22,573 cod were tagged and released in the North Sea between 1961 and 2015, with 6,703 tags subsequently returned. The data, provided by the Marine Environmental Data & Information Network, includes recapture details such as date, location, length, weight, sex, and maturity. These data are used for studies relating to fish behavior, growth, and stock identification.
Use Cases
- Modeling cod migration patterns based on release and recapture locations.
- Analyzing growth rates based on recorded length and weight at recapture.
- Studying population demographics based on recorded sex and maturity data.
- Investigating stock unit identification based on spatial and temporal recapture patterns.
Strengths
- Covers a long-term period from 1961 to 2015.
- Includes a substantial number of tagged fish (22,573) and recaptures (6,703).
- Contains detailed biological measurements for recaptured fish, including length, weight, sex, and maturity.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
- Data may reflect temporal bias inherent to the tagging program's operational years.
Provenance
- Source
- Marine Environmental Data & Information Network
- Collection Method
- Fish were tagged and released using conventional marker-ID tags and, in later years, electronic data storage tags (DSTs).
- Time Range
- 1961 to 2015
- Freshness
- Last updated 2026-06-11 08:10:45.914185; freshness should be verified.
- Geography
- North Sea (ICES Subarea 4)