gov.noaa.nmfs.inport:23673 eng UTF8 dataset Alaska Fisheries Science Center 7600 Sand Point Way N.E., Building 4 Seattle WA 98115 USA https://www.afsc.noaa.gov WWW:LINK-1.0-http--link Website Website for this organization information 0700-1700 Pacific Time resourceProvider 2025-05-15T19:15:45 ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data ISO 19115-2:2009(E) AFSC/ABL: Genetic data for juvenile chum salmon samples collected in the eastern Bering Sea on the U.S. BASIS cruises during 2003-2007. AFSC/ABL: Genetic data for juvenile chum salmon samples collected in the eastern Bering Sea on the U.S. BASIS cruises during 2003-2007. publication NOAA/NMFS/EDM 23673 https://www.fisheries.noaa.gov/inport/item/23673 WWW:LINK-1.0-http--link Full Metadata Record View the complete metadata record on InPort for more information about this dataset. information Kondzela, Chris Chris.Kondzela@noaa.gov originator Chum salmon (Oncorhynchus keta) are an important natural resource in western Alaska for subsistence, commercial and cultural reasons. Declines in chum salmon returns in some western Alaska drainages over the last couple of decades have prompted regulatory changes and bolstered research on this species in this region. Since 2002, juvenile chum salmon have been collected as part of the annual U.S. Bering-Aleutian Salmon International Survey (BASIS) during the late summer/fall season in the eastern Bering Sea. From the 2003-2007 collections, nearly 5,000 juvenile chum salmon samples were genetically analyzed. With the available microsatellite baseline, regional stock estimates were produced from mixed-stock analyses. The proportions of juvenile chum salmon from four western Alaska regionsNorton Sound, lower Yukon (summer-run), upper Yukon (fall-run), and Kuskokwim/northeastern Bristol Baywere remarkably similar across years during early marine residence, especially given the latitudinal shifts from year-to-year in the distribution across the eastern Bering Sea shelf of this highly migratory species. Most of the juvenile chum salmon were from the Yukon River, which has two life-history types, an earlier and typically more abundant summer run, and a later fall run. The Kuskokwim/northeastern Bristol Bay contribution within the study area (lat. 58-63N) was negligible, indicating that these stocks do not migrate northward during their first summer. The Norton Sound group contribution varied annually, but in general, increased with latitude. These results support a migration model whereby western Alaska juvenile chum salmon, after leaving freshwater, head primarily west and south across the eastern Bering Sea shelf. A relative abundance index was developed from the proportions of the two life-history types in the Yukon River of juvenile chum salmon in the survey area. In all five years of collections, the summer-run contribution was higher than the fall-run contribution in the juvenile chum salmon samples. The proportions of the two life-history types in the juvenile chum salmon collected at sea were compared with those in the Yukon River adult returns. A correlation was found between the juveniles and subsequent adult returns. This suggests that it is during the period of freshwater and early marine residence that the cohort strength of Yukon River summer- and fall-run chum salmon is determined. This dataset contains genetic data for juvenile chum salmon samples collected in the eastern Bering Sea on the U.S. BASIS cruises during 2003-2007 Alaska Sustainable Salmon Fund (Project 44619) and Arctic-Yukon-Kuskokwim Sustainable Salmon Initiative (Project 1002/SAF-336) completed Kondzela, Chris Chris.Kondzela@noaa.gov pointOfContact Kondzela, Chris Chris.Kondzela@noaa.gov custodian notPlanned Alaska Bering Sea Yukon River place Geographic Names Information System genetic data microsatellites theme DOC/NOAA/NMFS/AFSC > Alaska Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2017-04-24 publication 8.5 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Auke Bay Laboratories project InPort otherRestrictions Cite As: Alaska Fisheries Science Center, [Date of Access]: AFSC/ABL: Genetic data for juvenile chum salmon samples collected in the eastern Bering Sea on the U.S. BASIS cruises during 2003-2007. [Data Date Range], https://www.fisheries.noaa.gov/inport/item/23673. 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. otherRestrictions Access Constraints: Contact the Point of Contact for data request form. otherRestrictions Use Constraints: User must read and fully comprehend the metadata prior to use. Data should not be used beyond the limits of the source scale. Acknowledgement of NOAA, as the source from which these data were obtained, in any publications and/or other representations of these data is suggested. otherRestrictions Distribution Liability: The user is responsible for the results of any application of this data for other than its intended purpose. unclassified NOAA Data Management Plan (DMP) NOAA/NMFS/EDM 23673 https://www.fisheries.noaa.gov/inportserve/waf/noaa/nmfs/afsc/dmp/pdf/23673.pdf WWW:LINK-1.0-http--link NOAA Data Management Plan (DMP) NOAA Data Management Plan for this record on InPort. information crossReference eng; US biota Microsoft Excel -173.03 -163.04 56.99 65.06 Bering Sea | Currentness: Ground Condition 2003 2007 false eng false AKSSF44619JuvChum2003-2007Dataset 2016-05-05 publication Kondzela, Chris Chris.Kondzela@noaa.gov distributor https://console.cloud.google.com/storage/browser/_details/nmfs_odp_afsc/ABL/Genetic%20data%20for%20juvenile%20chum%20salmon%20samples%20collected%20in%20the%20eastern%20Bering%20Sea%20on%20the%20U.S.%20BASIS%20cruises%20during%202003-2007._ID_23673.csv WWW:LINK-1.0-http--link https://console.cloud.google.com/storage/browser/_details/nmfs_odp_afsc/ABL/Genetic%20data%20for%20juvenile%20chum%20salmon%20samples%20collected%20in%20the%20eastern%20Bering%20Sea%20on%20the%20U.S.%20BASIS%20cruises%20during%202003-2007._ID_23673.csv NCEI to be determined Note: Dataset migrated by Dan Woodrich (AFSC data management coordinator) on 12/15/2021. Contact: Daniel.woodrich@noaa.gov download dataset Completeness Report See logical consistency report. Conceptual Consistency Genotypes were scored by two people with the software GeneMapper. Samples missing genotypes from four or more loci, or having six or more homozygous loci were removed. All but one sample with duplicate genotypes at all loci were removed. The bottom row of each 96-well DNA elution plate was re-plated, re-amplified, re-genotyped, and compared with the original genotype to quantify the genotyping error rate. Contact the dataset POC for full methodology