August 1990 to July 1992 survey data from otter trawls in the Chukchi Sea, capturing marine fish and shellfish populations. The dataset was collected by the University of Alaska and processed by the National Oceanographic Data Center (NODC) to the F123 Fish/Shellfish Surveys standard format. It provides information on population density and distribution from specific research vessels.
Use Cases
- Analyze species distribution by correlating catch statistics (e.g., weight, number per unit volume) with reported position and environmental data like bottom temperature and salinity.
- Model population density trends over the survey period using haul-specific data on fishing distance, duration, and number of hauls reported for each cruise.
- Study predator-prey relationships by examining stomach contents analysis data linked to specimens identified by NODC Taxonomic Code.
- Investigate the impact of meteorological conditions and current direction/speed on catch composition and biological characteristics of selected specimens.
Strengths
- Data spans a defined two-year period from 16 August 1990 to 31 July 1992.
- Includes multi-faceted data: cruise logistics, environmental measurements, gear specifications, and detailed biological catch statistics.
- Structured to a documented NODC standard format (F123), ensuring a consistent schema.
Limitations
- Data is described as 'very sparse prior to 1975', suggesting this specific 1990-92 collection may be a limited snapshot.
- The exact row count, column list, and sample size for biological measurements are unknown.
- Temporally stale, with no updates since the collection ended in July 1992.
Provenance
- Source
- University of Alaska (data collector), NOAA National Centers for Environmental Information (NCEI) as archive.
- Collection Method
- Field sampling via otter trawls from the vessels OCEAN HOPE 3 and OSHORO MARU.
- Time Range
- 16 August 1990 to 31 July 1992
- Freshness
- Data collection concluded on 31 July 1992; it is a historical archive with no ongoing updates.
- Geography
- Chukchi Sea