Salmon Hatchery Thermal Marks and Stock Distribution in the Gulf of Alaska 2001-2004

SCIOPS collected data on salmon otolith thermal marks and genetic stock identification in the Gulf of Alaska from 2001 to 2004. The dataset includes analyses from four research cruises (GP0108, GP0207, GP0401, MF0310) and examines factors affecting juvenile salmon distribution. Data collection involved CTD, ADCP, and stomach content analyses of trawled salmon.

Use Cases

• Identify hatchery-origin salmon based on otolith thermal mark analysis mentioned in the description
• Determine salmon stock distribution relative to oceanographic regimes using Genetic Stock Identification techniques described
• Model juvenile salmon distribution based on biological and physical factors examined in the study
• Analyze catch per unit effort in relation to oceanographic and prey factors for pink, chum, coho, and sockeye salmon as described

Strengths

• Data collected from four specific research cruises: GP0108, GP0207, GP0401, MF0310
• Integrates multiple analysis methods: otolith marking, genetic identification, CTD, ADCP, and stomach content analysis

Limitations

• Column-level documentation is absent; field semantics must be inferred after download
• Row count is unknown, which may limit suitability assessment
• Last updated 2004-11-12 23:59:59.999000; freshness should be verified

Provenance

Source

SCIOPS via nasa_earthdata

Collection Method

Data collected from research cruises, including trawling, CTD, ADCP, and laboratory analyses of otoliths and stomach contents.

Time Range

2001-2004

Freshness

Last updated 2004-11-12 23:59:59.999000

Geography

Gulf of Alaska