Effects of elevated sediment levels from placer mining on survival and behavior of immature arctic grayling
Thesis (M.S.) University of Alaska Fairbanks, 1988 The effect of placer mining effluents on Arctic grayling (Thymallus arcticus) fingerling and egg survival was tested in mined and unmined streams in interior Alaska. Also the influence of turbidity on Arctic grayling reactive distance and avoidance...
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1988
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ftunivalaska:oai:scholarworks.alaska.edu:11122/11465 2023-05-15T14:31:16+02:00 Effects of elevated sediment levels from placer mining on survival and behavior of immature arctic grayling Scannell, Patrick O. 1988-12 http://hdl.handle.net/11122/11465 en_US eng http://hdl.handle.net/11122/11465 Fisheries arctic grayling fishes Alaska hydraulic mining environmental impact Thesis ms 1988 ftunivalaska 2023-02-23T21:37:42Z Thesis (M.S.) University of Alaska Fairbanks, 1988 The effect of placer mining effluents on Arctic grayling (Thymallus arcticus) fingerling and egg survival was tested in mined and unmined streams in interior Alaska. Also the influence of turbidity on Arctic grayling reactive distance and avoidance behavior was tested in a laboratory choice chamber. Arctic grayling fingerlings suffered less than 1% mortality during a 96-hr toxicity test in both clear (mean NTU = 1.4) and mined (mean NTU = 445) streams. Arctic grayling eggs did not show significantly (p > 0.1) higher mortality in mined streams than in unmined streams. In a laboratory choice chamber test, Arctic grayling avoided water with a turbidity above 20 NTU (nephelometric turbidity units). Arctic grayling reactive distance diminished proportional to the natural logarithm of turbidity. U. S. Fish and Wildlife Service, National Fisheries Contaminants Research Center, Columbia, Missouri, research work order 14-16-0009-1532, number 5, Alaska Cooperative Fishery Research Unit Thesis Arctic grayling Arctic 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 fishes Alaska hydraulic mining environmental impact |
spellingShingle |
arctic grayling fishes Alaska hydraulic mining environmental impact Scannell, Patrick O. Effects of elevated sediment levels from placer mining on survival and behavior of immature arctic grayling |
topic_facet |
arctic grayling fishes Alaska hydraulic mining environmental impact |
description |
Thesis (M.S.) University of Alaska Fairbanks, 1988 The effect of placer mining effluents on Arctic grayling (Thymallus arcticus) fingerling and egg survival was tested in mined and unmined streams in interior Alaska. Also the influence of turbidity on Arctic grayling reactive distance and avoidance behavior was tested in a laboratory choice chamber. Arctic grayling fingerlings suffered less than 1% mortality during a 96-hr toxicity test in both clear (mean NTU = 1.4) and mined (mean NTU = 445) streams. Arctic grayling eggs did not show significantly (p > 0.1) higher mortality in mined streams than in unmined streams. In a laboratory choice chamber test, Arctic grayling avoided water with a turbidity above 20 NTU (nephelometric turbidity units). Arctic grayling reactive distance diminished proportional to the natural logarithm of turbidity. U. S. Fish and Wildlife Service, National Fisheries Contaminants Research Center, Columbia, Missouri, research work order 14-16-0009-1532, number 5, Alaska Cooperative Fishery Research Unit |
format |
Thesis |
author |
Scannell, Patrick O. |
author_facet |
Scannell, Patrick O. |
author_sort |
Scannell, Patrick O. |
title |
Effects of elevated sediment levels from placer mining on survival and behavior of immature arctic grayling |
title_short |
Effects of elevated sediment levels from placer mining on survival and behavior of immature arctic grayling |
title_full |
Effects of elevated sediment levels from placer mining on survival and behavior of immature arctic grayling |
title_fullStr |
Effects of elevated sediment levels from placer mining on survival and behavior of immature arctic grayling |
title_full_unstemmed |
Effects of elevated sediment levels from placer mining on survival and behavior of immature arctic grayling |
title_sort |
effects of elevated sediment levels from placer mining on survival and behavior of immature arctic grayling |
publishDate |
1988 |
url |
http://hdl.handle.net/11122/11465 |
geographic |
Arctic Fairbanks |
geographic_facet |
Arctic Fairbanks |
genre |
Arctic grayling Arctic Thymallus arcticus Alaska |
genre_facet |
Arctic grayling Arctic Thymallus arcticus Alaska |
op_relation |
http://hdl.handle.net/11122/11465 Fisheries |
_version_ |
1766304939349377024 |