Winter habitat of arctic grayling in an interior Alaska stream
Thesis (M.S.) University of Alaska Fairbanks, 1995 Placer 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 area...
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ftunivalaska:oai:scholarworks.alaska.edu:11122/8436 2023-05-15T14:31:17+02:00 Winter habitat of arctic grayling in an interior Alaska stream Lubinski, Brian R. 1995-05 http://hdl.handle.net/11122/8436 en_US eng http://hdl.handle.net/11122/8436 Arctic grayling Alaska Fishes Wintering Habitat Thesis ms 1995 ftunivalaska 2023-02-23T21:37:02Z Thesis (M.S.) University of Alaska Fairbanks, 1995 Placer 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. Thesis Arctic grayling Arctic Beaver Creek Thymallus arcticus Alaska University of Alaska: ScholarWorks@UA Arctic Fairbanks |
institution |
Open Polar |
collection |
University of Alaska: ScholarWorks@UA |
op_collection_id |
ftunivalaska |
language |
English |
topic |
Arctic grayling Alaska Fishes Wintering Habitat |
spellingShingle |
Arctic grayling Alaska Fishes Wintering Habitat Lubinski, Brian R. Winter habitat of arctic grayling in an interior Alaska stream |
topic_facet |
Arctic grayling Alaska Fishes Wintering Habitat |
description |
Thesis (M.S.) University of Alaska Fairbanks, 1995 Placer 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. |
format |
Thesis |
author |
Lubinski, Brian R. |
author_facet |
Lubinski, Brian R. |
author_sort |
Lubinski, Brian R. |
title |
Winter habitat of arctic grayling in an interior Alaska stream |
title_short |
Winter habitat of arctic grayling in an interior Alaska stream |
title_full |
Winter habitat of arctic grayling in an interior Alaska stream |
title_fullStr |
Winter habitat of arctic grayling in an interior Alaska stream |
title_full_unstemmed |
Winter habitat of arctic grayling in an interior Alaska stream |
title_sort |
winter habitat of arctic grayling in an interior alaska stream |
publishDate |
1995 |
url |
http://hdl.handle.net/11122/8436 |
geographic |
Arctic Fairbanks |
geographic_facet |
Arctic Fairbanks |
genre |
Arctic grayling Arctic Beaver Creek Thymallus arcticus Alaska |
genre_facet |
Arctic grayling Arctic Beaver Creek Thymallus arcticus Alaska |
op_relation |
http://hdl.handle.net/11122/8436 |
_version_ |
1766304944817700864 |