AFSC/RACE/SAP/Armistead: 1975 - 2016 eastern Bering Sea Crab Distribution For Web

The Resource Assessment and Conservation Engineering Division (RACE) of the Alaska Fisheries Science Center (AFSC) conducts bottom trawl surveys to monitor the condition of the demersal fish and crab stocks of Alaska. These data include catch per unit effort for each commercially important crab species at a standard set of stations in the eastern Bering Sea. This is a subset of the main database. Excluded are certain non standard tows and other types of data collected other than species id, species size category, species catch per unit effort (number per square nautical mile), water temperature and depth.

The data set was developed to describe the temporal distribution and abundance of commercially important crab species, examine the changes in the species composition of species over time and space, and describe the physical environment of the habitat.

Loaded by FGDC Metadata Uploader, batch 6976, 09-01-2015 17:20

The following FGDC sections are not currently supported in InPort, but were preserved and will be included in the FGDC export:

- Taxonomy (FGDC:taxonomy)

The user is responsible for the results of any application of this data for other than its intended purpose.

NOAA denies liability if the data are misused.

data can be downloaded from http://www.afsc.noaa.gov/maps/crabmap/crabmap.html

There are no legal restrictions on access to the data. They reside in public domain and can be freely distributed.

User must read and fully comprehend the metadata prior to use. Applications or inferences derived from the data should be carefully considered for accuracy. Acknowledgement

of NOAA/NMFS/AFSC, as the source from which these data were obtained in any publications and/or other representations of these, data is suggested.

This is a subset of the main database. Excluded are certain non standard tows and other types of data collected other than species id, species size category, species catch per unit effort (number per square nautical mile), water temperature and depth.

Data set includes data collected from standard and non-standard hauls (special projects, opportunistic collections, etc.).

error checking routines are run against the data

All data is submitted to a thorough QA/QC process. Data is checked for outliers, impossible values, and other errors.

No delay

IT Security and Contingency Plan for the system establishes procedures and applies to the functions, operations, and resources necessary to recover and restore data as hosted in the Western Regional Support Center in Seattle, Washington, following a disruption.

Measurements to nearest millimeter of commercially important eastern Bering Sea crab species were collected at sea. Data was uploaded to an Oracle database and checked for validity (outliers, impossible values). Catch-per-unit-effort (CPUE) estimates in terms of number of crab per square nautical mile were generated for each stock and major size group by sex. These CPUE values were imported into an ArcGIS web map, and published on the Alaska Fisheries Science Center web page.