Research and Recovery of Snake River Sockeye Salmon, 1994 Annual Report.

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On November 20, 1991, the National Marine Fisheries Service listed Snake River sockeye salmon oncorhynchus nerka as endangered under the Endangered Species Act of 1973. In 1991, the Shoshone-Bannock Tribe and the Idaho Department of Fish and Game initiated the Snake River Sockeye Salmon Sawtooth Valley Project to conserve and rebuild populations in Idaho. In 1994, the authors estimated the total September Redfish Lake O. nerka population at 51,529 fish (95% CI, {+-} 33,179). The Alturas Lake O. nerka population was estimated at 5,785 fish ({+-} 6,919). The total density and biomass of Alturas Lake was estimated at 27 fish/hectare ... continued below

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52 pages

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Kline, Paul A. August 1, 1995.

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Description

On November 20, 1991, the National Marine Fisheries Service listed Snake River sockeye salmon oncorhynchus nerka as endangered under the Endangered Species Act of 1973. In 1991, the Shoshone-Bannock Tribe and the Idaho Department of Fish and Game initiated the Snake River Sockeye Salmon Sawtooth Valley Project to conserve and rebuild populations in Idaho. In 1994, the authors estimated the total September Redfish Lake O. nerka population at 51,529 fish (95% CI, {+-} 33,179). The Alturas Lake O. nerka population was estimated at 5,785 fish ({+-} 6,919). The total density and biomass of Alturas Lake was estimated at 27 fish/hectare ({+-} 33) and 0.7 kg/hectare, respectively. The total O. nerka population estimate for Pettit Lake was 14,743 fish ({+-} 3,683). Stanley Lake O. nerka total population size, density, and biomass was estimated at 2,695 fish ({+-} 963), 37 fish/hectare ({+-} 13), and 0.5 kg/hectare, respectively. Estimated numbers of O. nerka outmigrant smolts passing Redfish Lake Creek and Salmon River trapping sites increased in 1994. The authors estimated 1,820 (90% CI 1,229--2,671) and 945 (90% CI 331--13,000) smolts left Redfish and Alturas lakes, respectively. The total PIT tag detection rate at mainstem dams for Redfish Lake outmigrants was 21% in 1994. No Alturas Lake outmigrants were detected at any of the downstream facilities with detection capabilities (zero of 50 fish).

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52 pages

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OSTI as DE96003236

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  • Other Information: PBD: Aug 1995

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  • Other: DE96003236
  • Report No.: DOE/BP-21065-3
  • Grant Number: 1991BP21065
  • DOI: 10.2172/161492 | External Link
  • Office of Scientific & Technical Information Report Number: 161492
  • Archival Resource Key: ark:/67531/metadc622748

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  • August 1, 1995

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • Feb. 20, 2017, 1:57 p.m.

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Kline, Paul A. Research and Recovery of Snake River Sockeye Salmon, 1994 Annual Report., report, August 1, 1995; Idaho. (digital.library.unt.edu/ark:/67531/metadc622748/: accessed October 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.