Marine Resource Surveys on the Continental Shelf off Oregon, 1971 - 74, Completion Report, July 1, 1971 to June 30, 1975

Identification Information

Citation

Originator: Demory, Robert L, Michael J. Hosie, Neil Ten Eyck, and Brent O. Forsberg

Publish Date: 1976

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: Groundfish surveys off Oregon were conducted over a four year period (1971-74) between the Columbia River and Cape Blanco. Primary purpose of the surveys was to obtain estimates of biomass o f important groundfish occupying the continental shelf and upper continental slope. Survey design was based on a 5 x 5 N mi grid with a random starting point. This resulted in trawling intensity of about 1 tow per 25 N mi2 of trawlable bottom. Samples for age, size and sex composition were taken from important species of flatfish. Weights o f all species caught were obtained. Estimates of biomass (all species) were 283,750 metric tons in 1971-72 and 235,117 metric tons in 1973-74. Pacific hake was the most abundant species followed by Dover sole. Estimates of potential yield were determined for five species of flatfish. Data indicate that only petrale sole are being fully exploited. Increased yield could be obtained without increasing fishing effort if economic conditions were such that the species caught were more completely utilized. Distribution of major species is depicted by catch maps. Distribution of some species is closely allied with depth and sediment type or both. No attempt was made to quantify species association.

Purpose:

Time Period of Content: July 1, 1971 to June 30, 1975

Geographic Extent: Between Columbia River and Cape Blanco

Status: Final

Use Constraints:

Format: PDF

Data Quality Information

Lineage-Source: National Marine Fisheries Service National Oceanic and Atmospheric Administration U.S. Department of Commerce Commercial Fisheries Research and Development Act Project Nos. 1-78-D-1, 1-78-D-2, 1-78-D-3 Contract Nos. N 208-0072-72(N), 04-3-208-57, 04-4-208-6

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	1320
Year	1976
Publisher
Request Type	Report (FCO Marine Fish Pgm)
Location	Salem HQ
Date Created	1976 June
Date Cataloged	4/24/2007
Date Published	1976
Type	stp crnr
Pages	1-49
Volume
Status	2
Descriptor	Habitat; Continental Shelf/OR
Date Entered	2007-04-24 00:00:00
Location In Clackamas Library	N2W, Ocean Fish
Author	R Demory; M Hosie; N Ten Eyck; B Forsberg
Duplicates	0
Number Remaining After Requests
Presumed All Distributed
Back Room Duplicates	0
Author	Demory, R.L.; Hosie, M.J.; Forsberg, B.O.; Ten Eyck, N.
Risk	Habitat
Species
Disposition Of Requests	Jean McCrae - 2: Request filled
Disposition Of Requests	State Archive: Request filled

Is a physical copy maintained for reference at Headquarters? Unknown