Catch and effort data by depth interval for areas fished by Oregon shrimp trawlers, 1958-66

Identification Information

Citation

Originator: Milburn, G. S and J. G. Robinson

Publish Date: 1969

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: This report summarizes available commercial catch, effort and catch per unit of effort data for pink shrimp, Pandalus jordani Rathbun, fished by Oregon-based vessels during the period from 1958 to 1966, The data are tabulated by 10-fathom (18,3 •meter) depth interval for area and month, These data have been included in other reports, notably the PMFC Data Series, but have not been tabulated before by depth of catch. This report may prove useful to researchers and fishermen by providing information on distribution of shrimp by depth of substrate, as reflected by pounds of shrimp landed per tow hour. However, these data are biased by the fact that most fishing effort is applied to areas where the best catches are made and thus may not always reflect the abundance of shrimp throughout the bed. Population density near the perimeter of the shrimp bed usually drops off, and this is reflected by a change in the pounds of shrimp caught per tow hour, The density of shrimp by depth range may vary from area to area. The amount of bottom area within each 10-fathom depth interval varies along the coast because of the difference in the slope of the continental shelf. For example, the width of the three intervals between 60 and 90 fathoms off Port Orford is 1 mile, while off Tillamook Head it is 3 miles. Both research and commercial fishing have shown that shrimp concentrations are usually found on a green mud or muddy sand bottom that is flat or has a gentle slope.

Purpose:

Time Period of Content:

Geographic Extent: Not Available

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: Not yet described

Bibliography Information

Field Name	Value
Biblio ID	3130
Year	1969
Publisher
Request Type	Report
Location	Salem HQ
Date Created	1969 June
Date Cataloged	10/15/2007
Date Published	1969
Type	taped edge
Pages	1-46
Volume	2
Status	2
Descriptor	Shrimp; Harvest; Coast, OR
Date Entered	2007-10-11 00:00:00
Location In Clackamas Library	Commercial Fish, 3S, West end
Author	Gary S Milburn; Jack G Robinson
Duplicates	0
Number Remaining After Requests	53
Presumed All Distributed
Back Room Duplicates	0
Author	Robinson, J.G.; Milburn, G.S.
Risk	Harvest
Species
Disposition Of Requests	State Archive: Request filled
Disposition Of Requests	Jean McCrae - 2: Request filled

Is a physical copy maintained for reference at Headquarters? Yes