Prediction of 2004 Ocean Abundance for Rogue River Fall Chinook Salmon

Identification Information

Citation

Originator: Stewart, David C. and Steven E. Jacobs

Publish Date: March 2004

Online Link: https://odfw.forestry.oregonstate.edu/spawn/reports.htm

BPA Project #:

Contact Information

Agency: Oregon Department of Fish and Wildlife

Name: Matt Weeber

Job Position: OASIS Program Analyst

Telephone: 541-757-5120

E-Mail Address: Matt.Weeber@oregonstate.edu

Description

Abstract: The 2004 ocean population abundance of fall chinook salmon from the Rogue River is predicted to be 80% of that in 2003 and 85% of that in 2002. However, the 2004 abundance is predicted to be higher than the abundance observed in any other prior year back through 1989. Relative to the base period used in scaling the Klamath Ocean Harvest Model (1986-2003), the prediction for 2004 is 2.4-times the average of the estimated actual abundance during this 18-year period; ranging from 24% of their estimated actual abundance in 1987 to 582% of their estimated actual abundance in 1999.

Purpose: Fall chinook salmon produced in the Rogue River Basin are a major contributor to Oregon and California salmon fisheries. A prediction of ocean abundance of Rogue River chinook salmon is needed to account for their abundance in structuring ocean salmon fisheries that harvest Klamath fall chinook salmon (KRTAT 1988, Prager and Mohr 2001). The version of the Klamath Ocean Harvest Model that will be used to evaluate 2004 ocean season options is calibrated to estimated actual landings and fishery impacts that occurred during 1986-2002, and thus requires predictions of the 2004 ocean abundance of Rogue chinook to be scaled to their estimated actual ocean abundance during each of these 17 base years.

Time Period of Content: 1972-2004

Geographic Extent: Rogue River

Status: Final

Use Constraints:

Format: PDF File

Data Quality Information

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Data Information

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Entity and Attribute Information

Attributes Description: Field attribute information is available in the attached file(s).

Is a physical copy maintained for reference at Headquarters? No