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Short Citation:
Alaska Fisheries Science Center, 2024: AFSC/ABL: Stock composition, timing, and spawning distribution of Yukon River Chinook salmon,

Item Identification

Title: AFSC/ABL: Stock composition, timing, and spawning distribution of Yukon River Chinook salmon
Short Name: AFSC/ABL: Stock composition, timing, and spawning distribution of Yukon River Chinook salmon
Status: Completed
Publication Date: Unknown

Radio telemetry was used to determine the distribution, locate spawning sites, and evaluate the tagging response of wild Chinook salmon Oncorhynchus tshawytscha returning to a large, free-flowing river basin. A total of 2,860 fish were radio tagged in the lower Yukon River and tracked upriver. Fish traveled to spawning areas throughout the basin, ranging from several hundred to over 3,000 km from the tagging site. We found similar distribution patterns across years, suggesting that the major components of the return were identified. Most spawning fish were clustered in a number of principal tributaries, although small numbers of fish were located in other spatially-isolated areas. The cumulative contribution of these minor stocks was appreciable, making up 28-31% of the tagged sample. There was suggestive evidence of mainstem spawning in upper reaches of the basin. Large-scale elevation and physiographic data were useful in categorizing spawning areas, with most fish returning to relatively entrenched upland rivers. Fish were largely absent in lowland reaches characterized by meandering, low gradient, alluvial channels often associated with main river floodplains. The fish generally responded well to the capture, handling, and tagging procedures with most (2,790, 97.6%) resuming upriver movements, although the fish initially displayed a negative tagging response, with slower migration rates observed immediately after release. The duration of this response was relatively short (several days) and less severe as the fish moved upriver. The swimming speeds of radio-tagged fish after the initial delay were comparable to estimates for untagged fish, further suggesting that the capture, handling, and tagging methods used were relatively benign. Identifying the primary components of the run (including both major and minor stocks) and determining site-specific utilization patterns can fundamentally enhance salmon management in large river basins, and facilitate research and conservation efforts.


This database contains data from a radio telemetry study conducted on Yukon River Chinook salmon (Oncorhynchus tshawytscha) during 2002-2004 to provide information on stock composition and run timing, and locations of important spawning areas.


Loaded by FGDC Metadata Uploader, batch 5986, 05-01-2015 19:15

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

- Taxonomy (FGDC:taxonomy)


Theme Keywords

Thesaurus Keyword
ISO 19115 Topic Category
ISO 19115 Topic Category Chinook salmon
ISO 19115 Topic Category run timing
ISO 19115 Topic Category spawning distribution
ISO 19115 Topic Category stock composition
National Park Service Theme Category Thesaurus Chinook salmon

Spatial Keywords

Thesaurus Keyword
Geographic Names Information System Alaska
Geographic Names Information System Yukon River
National Park System Unit Code Thesaurus Alaska
National Park System Unit Code Thesaurus Yukon River

Physical Location

Organization: Auke Bay Laboratories
City: Juneau
State/Province: AK
Country: US

Data Set Information

Data Set Scope Code: Data Set
Maintenance Frequency: None Planned
Data Presentation Form: maps and data
Distribution Liability:

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

Data Set Credit: Alaska Department of Fish and GameDepartment of Fisheries and Oceans CanadaU.S.-Canada Yukon River PanelBering Sea Fishermens AssociationYukon River Drainage Fishers Association

Support Roles

Data Steward

CC ID: 231453
Date Effective From: 2015-10-08
Date Effective To:
Contact (Person): Eiler, John
Email Address:


CC ID: 200492
Date Effective From: 2015-05-01
Date Effective To:
Contact (Person): Eiler, John
Email Address:

Metadata Contact

CC ID: 200490
Date Effective From: 2015-05-01
Date Effective To:
Contact (Person): MC, Metadata Coordinators
Email Address:


CC ID: 200494
Date Effective From: 2015-05-01
Date Effective To:
Contact (Person): Eiler, John
Email Address:

Point of Contact

CC ID: 200491
Date Effective From: 2015-05-01
Date Effective To:
Contact (Person): Eiler, John
Email Address:


Currentness Reference: Ground Condition

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 200489
W° Bound: -164
E° Bound: -133
N° Bound: 68
S° Bound: 59

Yukon River Basin

Extent Group 1 / Time Frame 1

CC ID: 200488
Time Frame Type: Range
Start: 2002
End: 2004

Access Information

Security Class: Unclassified
Data Access Procedure:


Data Access Constraints:

Contact the Point of Contact for data request form.

Data 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.

Distribution Information

Distribution 1

CC ID: 233604
Download URL:

NCEI to be determined

Note: Dataset migrated by Dan Woodrich (AFSC data management coordinator) on 12/14/2021. Contact:



CC ID: 200529
URL Type:
Online Resource

Technical Environment


Microsoft Excel spreadsheets

Data Quality

Completeness Report:

Tagging data were double entered to check for errors.

Fish distribution data were reviewed post season to ensure accuracy and identify entry and interpretation errors.

Conceptual Consistency:

No logical consistency test were run.

Quality Control Procedures Employed:

Contact the dataset POC for full QA/QC methodology

Data Management

Have Resources for Management of these Data Been Identified?: Yes
Approximate Percentage of Budget for these Data Devoted to Data Management: Unknown
Do these Data Comply with the Data Access Directive?: Yes
Is Access to the Data Limited Based on an Approved Waiver?: No
If Distributor (Data Hosting Service) is Needed, Please Indicate: yes
Approximate Delay Between Data Collection and Dissemination: unknown
If Delay is Longer than Latency of Automated Processing, Indicate Under What Authority Data Access is Delayed:

no delay

Actual or Planned Long-Term Data Archive Location: To Be Determined
If To Be Determined, Unable to Archive, or No Archiving Intended, Explain:

NCEI cite yet to be determined

Approximate Delay Between Data Collection and Archiving: unknown
How Will the Data Be Protected from Accidental or Malicious Modification or Deletion Prior to Receipt by the Archive?:

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.


Process Steps

Process Step 1

CC ID: 200499

See Source Information for cites of papers containing methodology.

Child Items

Rubric scores updated every 15m

Rubric Score Type Title
Entity Captag Table
Entity Region Area

Catalog Details

Catalog Item ID: 17266
GUID: gov.noaa.nmfs.inport:17266
Metadata Record Created By: Doug Turnbull
Metadata Record Created: 2012-12-18 18:14+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2023-05-30 18:10+0000
Metadata Record Published: 2016-05-18
Owner Org: AFSC
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2016-05-18
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2017-05-18