Show simple item record

dc.contributor.authorPeterson, Brent David
dc.date.accessioned2016-11-07T23:33:26Z
dc.date.available2016-11-07T23:33:26Z
dc.date.issued1997-05
dc.identifier.urihttp://hdl.handle.net/11122/6996
dc.descriptionThesis (M.S.) University of Alaska Fairbanks, 1997en_US
dc.description.abstractDuring May-June, 1995 and 1996, the outmigration of juvenile chum salmon (Oncorkynchus keta) and chinook salmon (O. tschazvytscha) was sampled with floating traps in the area of the Chena River Lakes Flood Control Project, Chena River, Alaska. Catch-per-unit-effort (CPUE) was higher at night than day for chinook juveniles, but not for chum juveniles. CPUE of both species decreased as the season progressed, but usually increased during higher-discharge events. CPUE is standardized by time; discharge was monitored as a covariate but was not included in CPUE calculations. The Jolly-Seber family of models was used on recapture data of fin-dipped fish to obtain estimates of abundance and survival in 1996. Abundance estimates were 266,104 chum salmon (95% Cl 128,031 - 404,177) and 171,952 chinook salmon (95% Cl 146,342 - 197,561) during the May-June outmigration period. These abundance estimates are probably underestimates of the entire Chena River population. Survival estimates were 0.135 (95% Cl 0.042 - 0.228) for chum salmon and 0.713 (95% Cl 0.492 - 0.935) for chinook salmon over the same period.en_US
dc.language.isoen_USen_US
dc.titleEstimation of abundance and mortality of emigrating chum salmon and chinook salmon in the Chena River, Alaskaen_US
dc.typeThesisen_US
dc.type.degreemsen_US
dc.identifier.departmentFisheries Divisionen_US
refterms.dateFOA2020-03-05T13:48:24Z


Files in this item

Thumbnail
Name:
Peterson_B_1997.pdf
Size:
2.348Mb
Format:
PDF

This item appears in the following Collection(s)

Show simple item record