Westrheim, S. J.Overview
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Most widely held works by
S. J Westrheim
Species synopses : life histories of selected fish and shellfish of the northeast Pacific and Bering Sea
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Book
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2 editions published in 1988 in English and held by 54 libraries worldwide This collection of seven papers covers the life histories of northern pink shrimp, Pacific sand lance, Pacific herring, walleye pollock, market squid and Pacific halibut in the Gulf of Alaska, the North Pacific and the Bering Sea, including literature surveys and bibliographies.
Final results of the September 1979 Dover sole tagging experiment in northern Hecate Strait, 1979-1999
by J Fargo
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3 editions published in 2007 in English and held by 39 libraries worldwide During September 21-26, 1979, 5146 Dover sole were tagged and released at two locations in Area 5D (Figure 1). Recovery results through 1984 were published in Fargo et al. (1985). We analyzed the final recovery information for the tagging through 1999. Time at liberty was 20 years for the last recovery, and 15 recoveries were at liberty at least 10 years. During 1979-99 recovery rates were not significantly different for the two tagging grounds. Incidence of recovered tags (nos/100t) was substantially larger in Area 5D than in Area 5E. Recovery rates generally varied directly with length at tagging. The sex ratio was similar for tagged fish recovered from the commercial fishery in the two Areas, but not so in samples taken from commercial landings. There was a differential bathymetric migration of the sexes, also demonstrated in earlier studies in U.S. waters. Namely, female Dover sole tagged in "shallow" water in Hecate Strait migrated during winter into "deep" water off the west coast of the Queen Charlotte Islands for spawning. The migration of males to deepwater spawning areas preceded that of females.
Bathymetric distributions of Pacific ocean perch (Sebastes alutus) off British Columbia
by S. J Westrheim
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Book
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2 editions published in 2006 in English and held by 37 libraries worldwide
Age-length relationships for 26 scorpaenids in the northeast Pacific Ocean
by S. J Westrheim
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Book
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2 editions published in 1975 in English and held by 21 libraries worldwide
G.B. Reed groundfish cruise no. 73-1, June 5-July 26, 1973
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Book
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3 editions published in 1973 in English and held by 20 libraries worldwide
On the status of Pacific ocean perch (Sebastes alutus) stocks off British Columbia, Washington, and Oregon in 1970
by S. J Westrheim
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Book
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3 editions published in 1972 in English and held by 19 libraries worldwide
G.B. Reed groundfish cruise reports, 1963-66
by S. J Westrheim
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Book
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3 editions published in 1967 in English and held by 19 libraries worldwide
G.B. Reed groundfish cruise no. 67-1, February 1 to April 24, 1967
by W. R Harling
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Book
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2 editions published in 1967 in English and held by 19 libraries worldwide
Parabranchial x-cell lesions in trawl-caught Pacific cod (Gadus macrocephalus) off the west coast of Canada : incidence and effects
by S. J Westrheim
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Book
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7 editions published between 1987 and 1988 in English and held by 18 libraries worldwide "Parabranchial 'growths' were first described in 1929 as adenocarcinomas (W. Pacific) and adenomas (E. Atlantic). The cancerous 'tumor' diagnosis was finally abandoned for parasite-caused X-cell lesions in 1981"--Abstract.
Length-weight and length-girth relationships for Pacific ocean perch (S̲e̲b̲a̲s̲t̲e̲s̲ a̲l̲u̲t̲u̲s̲) collected off southeastern Alaska in August 1971
by S. J Westrheim
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Book
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3 editions published in 1971 in English and held by 18 libraries worldwide
G̲. B̲. R̲e̲e̲d̲ groundfish cruise no. 74-4, September 4-25, 1974 (data record)
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Book
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2 editions published in 1974 in English and held by 18 libraries worldwide
G.B. Reed groundfish cruise no. 69-2, June 18-July 2, 1969
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2 editions published in 1969 in English and held by 18 libraries worldwide
G.B. Reed groundfish cruise no. 69-1, February 11-27, 1969
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2 editions published in 1969 in English and held by 18 libraries worldwide
Catch rates, size composition, and sex ratio of Pacific ocean perch (Sebastodes altus) caught in the Eastern North Pacific Ocean (Vancouver Island, B.C. to southeastern Alaska) by the G.B. Reed, August-October 1966
by S. J Westrheim
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Book
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1 edition published in 1967 in English and held by 18 libraries worldwide
Weight-length relationship for Pacific Ocean perch (Sebastes alutus) collected off British Columbia in 1969
by S. J Westrheim
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Book
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2 editions published in 1971 in English and held by 17 libraries worldwide
A selected bibliography of northeastern Pacific rockfishes (Sebastes and Sebastolobus) other than Sebastes alutus
by S. J Westrheim
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Book
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1 edition published in 1976 in English and held by 17 libraries worldwide
Production and stock assessment of principal groundfish stocks off British Columbia
by S. J Westrheim
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3 editions published in 1977 in English and held by 16 libraries worldwide
G̲.̲ B̲.̲ R̲e̲e̲d̲ groundfish cruise no. 72-3, September 9-28, 1972
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Book
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2 editions published in 1972 in English and held by 16 libraries worldwide
Bathymetric relationships of principal groundfish shelf cohabitants off West Vancouver Island and in Queen Charlotte Sound, based on demersal-trawl landing records
by S. J Westrheim
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Book
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2 editions published in 2005 in English and held by 12 libraries worldwide
A comparison of stratified systematic and stratified random methods of estimating catch rates, by depth interval, for biomass estimation of Pacific ocean perch (Sebastes alutus) in Goose Island Gully, Queen Charlotte Sound, British Columbia
by S. J Westrheim
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2 editions published in 2007 in English and held by 12 libraries worldwide Biomass surveys, using on-bottom trawl gear, for Pacific ocean perch (Sebastes alutus) in Goose Island Gully began in 1967, and eleven have been completed through 1995. The stratified systematic method was utilized for all cruises until 1995, when a stratified random method was introduced. The question arises as to the advantage, if any, of either method for estimating catch rates by depth interval. The purpose of this report was to compare sampling intensity, catch rates, and mean catches for the two methods, within the study area, defined by the trawl locations in the 1976 survey. Additional comparisons dealt with north-south orientation of hauls and order of trawling.--Document. more
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Related IdentitiesAssociated Subjects
Atlantic cod Bibliography British Columbia British Columbia--Pacific Coast Cod fisheries Echo sounding in fishing Exploratory fishing Fisheries Fisheries--Catch effort Fisheries--Research Fishes Fishes--Growth Fishes--Larvae Fish populations Fish stock assessment Fish surveys Fish tagging Flatfish fisheries G.B. Reed (Ship) Groundfishes Groundfish fisheries--Catch effort Lingcod Marine fishes Marine fishes--Age Microstomus pacificus North Pacific Ocean Ocean bottom Otoliths Pacific cod Pacific cod fisheries Pacific Ocean Pacific Ocean--Bering Sea Pacific ocean perch Pacific ocean perch fisheries Pacific Ocean--Queen Charlotte Sound Pacific Ocean--Queen Charlotte Sound--Hecate Strait Perch Rock sole Scales (Fishes) Scorpionfishes Sebastes Shellfish Soviet Union Spawning Statistics Striped bass Thornyheads Trawls and trawling Trawls and trawling--Catch effort Trawls and trawling--Equipment and supplies
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Alternative Names
Westrheim, Sigurd J.
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