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AFSC/REFM: Inshore research surveys in the eastern and central Gulf of Alaska, 2010-2013, conducted by the middle trophic level component of the GOA Integrated Ecosystem Research Project

Metadata Updated: April 1, 2024

This dataset contains the results of a series of inshore research surveys that took place during 2010-2013 as part of the Gulf of Alaska Integrated Ecosystem Research Program (GOAIERP), a multidisciplinary study of the GOA ecosystem funded by the North Pacific Research Board. The project is comprised of four groups of investigators, organized as upper, middle, and lower trophic levels plus a modeling group. Investigators from the middle trophic level component conducted the research covered by this dataset. The study area consists of two main spatial regions (eastern: the outer coast of Southeast Alaska, western: the east side of Kodiak Island and the southern coast of the Kenai Peninsula). Within each main region the surveys covered 5-6 inshore bays or systems of bays (east: Whale Bay, St. Lazaria Island, Salisbury Sound, Islas Bay, Graves Harbor, Torch Bay; west: Kiliuda Bay, Izhut Bay, Barren Islands, Port Dick, Aialik Bay).

At each of the inshore sites a number of research activities were conducted: 1) acoustic transects using 38- and 120-kHz split-beam transducers were conducted throughout the site to a depth of 20m; 2) sporadic nearshore acoustics were conducted from a skiff between depths of 5-20 m; 3) 10 m and 15 m beach seines were deployed along the shoreline; 4) a 50 m purse seine was deployed in depths from 3-7 m; 5) a 3-m beam trawl was deployed sporadically; 6) a 6 m X 3 m single-warp otter trawl was sporadically used for surface tows; 7) acoustic backscatter was groundtruthed using the otter trawl, jigging, and an underwater video camera; 8) oceanography stations were conducted using a Seabird 19+ CTD, a vertical zooplankton tow using a 1 m ring net, and collection of chlorophyll and nutrients samples at depths of 1 and 20 m at each station. Fish samples were taken for analyses of diet, nutritional condition, and energy content.

In 2010, pilot studies were conducted in the eastern region during July and in the western region during October. These studies did not employ all of the gears listed above, and little oceanography work was performed. In 2011, full 15-day seasonal surveys were conducted in each region (east: April, July, September; west: May, August, October). No fieldwork was conducted during 2012. In 2013 the full seasonal surveys once again took place, however due to the shutdown of the federal government the fall east survey was curtailed and the fall west survey was delayed until early November.

Access & Use Information

License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources

Dates

Metadata Date February 29, 2024
Metadata Created Date October 28, 2022
Metadata Updated Date April 1, 2024
Reference Date(s) (publication)
Frequency Of Update asNeeded

Metadata Source

Harvested from NMFS AFSC

Graphic Preview

Collection location map.

Additional Metadata

Resource Type Dataset
Metadata Date February 29, 2024
Metadata Created Date October 28, 2022
Metadata Updated Date April 1, 2024
Reference Date(s) (publication)
Responsible Party (Point of Contact, Custodian)
Contact Email
Guid gov.noaa.nmfs.inport:12858
Access Constraints Cite As: Alaska Fisheries Science Center, [Date of Access]: AFSC/REFM: Inshore research surveys in the eastern and central Gulf of Alaska, 2010-2013, conducted by the middle trophic level component of the GOA Integrated Ecosystem Research Project [Data Date Range], https://www.fisheries.noaa.gov/inport/item/12858., Access Constraints: The data set is still being analyzed and will not be available for distribution until it has been finalized and all QA/QC practices have been performed. Contact the Point Of Contact for estimated time of release., Use Constraints: 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.
Bbox East Long -133
Bbox North Lat 58
Bbox South Lat 55
Bbox West Long -155
Coupled Resource
Frequency Of Update asNeeded
Graphic Preview Description Collection location map.
Graphic Preview File http://www.afsc.noaa.gov/metadata-images/REFM/SSMAnearshore_goa.PNG
Graphic Preview Type url
Harvest Object Id 1a620dd0-5171-47a9-920d-f1367d60b9cf
Harvest Source Id 26a29bb9-50b0-47fd-920b-edc74aa6ec76
Harvest Source Title NMFS AFSC
Licence NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose.
Lineage not available
Metadata Language eng
Metadata Type geospatial
Old Spatial {"type": "Polygon", "coordinates": [[[-155.0, 55.0], [-133.0, 55.0], [-133.0, 58.0], [-155.0, 58.0], [-155.0, 55.0]]]}
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 2010
Temporal Extent End 2015

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