AFSC/ABL: Chum salmon length and weight monitoring at Fish Creek (Hyder, AK), Chilkat River (Haines, AK), Olsen Creek (Cordova, AK), and Quilcene River (Quilcene, WA)

Metadata Updated: May 31, 2016

Changes in size and age at maturity of chum salmon (Oncorhynchus keta) were monitored for two locations in North America. Chum salmon spawners returning to Fish Creek, southeastern Alaska, were sampled yearly from 1972 through 1996. Spawners retuning to the Quilcene National Fish Hatchery in Hood Canal, Washington, were sampled yearly from 1973 through 1996. Size at maturity of both populations declined significantly from about 1980 to the mid-1990s. Age at maturity increased during this time. These changes were associated with a major ocean climate regime shift in the North Pacific Ocean that occurred in 1976-77. Population abundance of chum salmon increased greatly after the regime shift, especially in Asia. Similar changes in size and age at maturity occurred in Asian chum salmon; because the range of North American and Asian chum salmon overlaps on the high seas, these changes are discussed in relation to possible density-dependent population factors. Since the mid-1990s, size at maturity and population abundance have increased, possibly indicating another climate change in the North Pacific Ocean.

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Dates

Metadata Date May 5, 2016
Metadata Created Date May 31, 2016
Metadata Updated Date May 31, 2016
Reference Date(s) (publication)
Frequency Of Update annually

Metadata Source

Harvested from NOAA CSW Harvest Source

Additional Metadata

Resource Type Dataset
Metadata Date May 5, 2016
Metadata Created Date May 31, 2016
Metadata Updated Date May 31, 2016
Reference Date(s) (publication)
Responsible Party Alaska Fisheries Science Center (Point of Contact)
Contact Email
Access Constraints 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 Data Point of Contact for estimated time of release. | 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.
Bbox East Long -122.8626639
Bbox North Lat 60.80222
Bbox South Lat 47.8187027
Bbox West Long -146.127222
Coupled Resource
Frequency Of Update annually
Guid gov.noaa.nmfs.inport:17278
Harvest Object Id c4fca538-6ac4-4cc6-97df-334b092a5811
Harvest Source Id 2aed8e29-fc5b-4cde-aa66-fb1118fd705e
Harvest Source Title NOAA CSW Harvest Source
Licence
Metadata Language eng
Metadata Type geospatial
Progress onGoing
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 1959
Temporal Extent End 2009

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