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dc.contributor.authorLubinski, Brian R.
dc.date.accessioned2018-05-24T22:55:45Z
dc.date.available2018-05-24T22:55:45Z
dc.date.issued1995-05
dc.identifier.urihttp://hdl.handle.net/11122/8436
dc.descriptionThesis (M.S.) University of Alaska Fairbanks, 1995en_US
dc.description.abstractPlacer mining and the lack of information on winter ecology of Arctic grayling Thymallus arcticus. has raised concern for this popular sportfish. A study was designed to validate aerial radio telemetry data and to locate and describe overwinter areas (OWA) of Arctic grayling in Beaver Creek, Alaska. Reliance on aerial data alone resulted in overestimation of survival and misidentification of 14 of 26 designated OWAs. Twenty-one Arctic grayling were tracked downstream 12-58 km to 12 OWAs spanning a 31-km section of Beaver Creek. Radio-tagged and untagged Arctic grayling occupied areas with ice thickness of 0.4-1.4 m overlying 0.06-0.52 m of water, flowing at 0.03-0.56 m/s. During winter, discharge, cross-sectional area, velocities, and water width in four OWAs decreased until late March; then, cross-sectional area increased due to an increase in discharge that pushed the ice upward. Adult Arctic grayling overwintered downstream of habitat disturbances, and occupied much shallower winter habitats than expected.en_US
dc.language.isoen_USen_US
dc.subjectArctic graylingen_US
dc.subjectAlaskaen_US
dc.subjectFishesen_US
dc.subjectWinteringen_US
dc.subjectHabitaten_US
dc.titleWinter habitat of arctic grayling in an interior Alaska streamen_US
dc.typeThesisen_US
dc.type.degreems
refterms.dateFOA2020-03-05T15:41:49Z


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