AFSC/RACE/FBEP/Hurst: Contrasting coastal and shelf nursery habitats of Pacific cod in the southeastern Bering Sea

This dataset is from a study examining the use of demersal and pelagic habitats in the southeast Bering Sea by age-0 Pacific cod, based on 4 years of demersal trawl surveys and 1 year of pelagic trawl surveys on the shelf, and 1 year of spatially intensive beam trawl sampling in a nearshore focal area along the central Alaska Peninsula.

The goal of the project that produced this dataset was to provide a more comprehensive perspective of habitat use by age-0 Pacific cod in the southeastern Bering Sea, specifically to evaluate the use of demersal habitats on the continental shelf and along the Alaska Peninsula coastline to complement existing knowledge of pelagic habitat use over the shelf.

Loaded by FGDC Metadata Uploader, batch 7440, 10-27-2015 13:19

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

- Taxonomy (FGDC:taxonomy)

- Spatial Reference Information (FGDC:spref),

- Spatial Data Organization Information (FGDC:spdoinfo)

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.

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Microsoft Excel

See Hurst, T.P., Cooper, D.W., Duffy-Anderson, T., Farley, E.V., 2015. Contrasting coastal and shelf nursery habitats of Pacific cod in the southeastern Bering Sea. ICES Journal of Marine Science, 72: 515-527

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Survey data were checked for outliers and impossible values.

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Demersal sampling over the southeastern Bering Sea shelf (SEBS): Small-mesh beam trawling was conducted in late summer over the SEBS over 4 years at depths of 20-146 m. Fish were collected with a 3-m beam trawl with 7-mm mesh and a 4-mm mesh codend.

Demersal sampling in the nearshore focal area: Age-0 Pacific cod were sampled in the Port Moller-Herendeen Bay (PM-HB) coastal embayments and along the adjacent coastline in the Bering Sea in August 2012, at depths ranging from 2 to 35mm, using a beam trawl of the same design as used in the SEBS shelf sampling.

Pelagic sampling over the Bering Sea shelf: As part of the Bering-Aleutian Salmon International Survey, surface and midwater trawling was conducted concurrently with beam trawl sampling on the SEBS shelf in 2012. A 198-m midwater rope trawl (mouth opening = 55 m width x 15 m height) was used to sample fish at the surface and in acoustically identified midwater aggregations.