Groundfish Assessment: Pacific Ocean Perch (Sebastes alutus) and Tagging Studies, Annual Report, October 1, 1978 to September 30, 1979

Identification Information

Citation

Originator: Golden, James T., William H. Barss, and Robert L. Demory

Publish Date: December 1979

Online Link: None

BPA Project #:

Contact Information

Agency: Oregon Department of Fish and Wildlife

Name: Cedric Cooney

Job Position: Natural Resources Data and Systems Manager

Telephone: 503-947-6094

E-Mail Address: Cedric.X.Cooney@odfw.oregon.gov

Description

Abstract: During April 1979 the Oregon Department of Fish and Wildlife (ODFW) participated in a survey of Pacific ocean perch (Sebastes alutus) in cooperation with the National Marine Fisheries Service (NMFS) and Washington Department of Fisheries (WDF). The survey occurred off the coasts of Oregon and Washington from Newport, Oregon (Lat. 44° 37' N) to Cape Flattery (Lat. 48° 26' N). Planning of the overall survey was coordinated by the Northwest and Alaska Fisheries Center of the NMFS.

Purpose: The overall goal was to reassess Pacific ocean perch abundance and to study survey methodology in an attempt to identify f actors which may aid in increasing precision and reducing bias of biomass estimates of Pacific ocean perch. Specific objectives were: (1) to estimate the absolute abundance of Pacific ocean perch in INPFC Columbia area and U.S. sector of INPFC Vancouver area north of Lat. 44° 37' N; (2) to determine the percent change in precision of biomass estimates from the 1977 rockfish survey estimates caused by stratification of sampling units and allocation of tows based on commercial CPUE records, bathymetric , geographic and seasonal availability of Pacific ocean perch; and (3) to determine whether or not the addition of optional tows based on the experience and knowledge of the fishing grounds by the vessel captain had any significant effect on the biomass estimate. There were several concurrent sub-objectives of the survey accomplished as well. These were: (1) to determine the age and size composition of Pacific ocean perch in the INPFC Columbia area; (2) to determine the species composition of slope rockfish in the INPFC Columbia area; and (3) to estimate biomass of some of the other species of the family Soorpeanidae which contributed to a significant portion of the catch.

Time Period of Content: 1977-1979

Geographic Extent: Oregon Coast

Status: Final

Use Constraints:

Format: PDF file

Data Quality Information

Lineage-Source:

Data Information

No data information was supplied.

Entity and Attribute Information

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

Bibliography Information

Field Name	Value
Biblio ID	1312
Year	1979
Publisher
Request Type	Report (FCO Marine Fish Pgm)
Location	Coast, OR
Date Created
Date Cataloged
Date Published	1979
Type
Pages	1-19+
Volume
Status	0
Descriptor	Perch; Coast, OR
Date Entered	1/1/1999
Location In Clackamas Library
Author
Duplicates
Number Remaining After Requests
Presumed All Distributed
Back Room Duplicates
Author	Barss, W.H.; Demory, R.L.; Golden, J.T.
Risk
Species
Disposition Of Requests	Jean McCrae - 2: Request filled

Is a physical copy maintained for reference at Headquarters? No