Pacific Lamprey Research and Restoration Project, Annual Report 2002.

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Pacific lamprey (Lampetra tridentata) has significantly declined along the Oregon coast and in the Columbia River Basin (Downey et al. 1993, Close and Jackson 2001). Declines in adults can be partially attributed to hydroelectric dams, which have impeded passage of adult Pacific lamprey in the Columbia and Snake rivers (Moser et al. 2002), thus effecting larval recruitment in the basin (Moser and Close in press). Adult Pacific lamprey also declined in numbers in the Umatilla River, a tributary of the Columbia River (Close and Jackson 2001). In addition to hydro power dams in the Columbia River, habitat alterations and chemical ... continued below

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117 pages

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Close, David; Aronsuu, Kimmo & Jackson, Aaron July 1, 2003.

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Description

Pacific lamprey (Lampetra tridentata) has significantly declined along the Oregon coast and in the Columbia River Basin (Downey et al. 1993, Close and Jackson 2001). Declines in adults can be partially attributed to hydroelectric dams, which have impeded passage of adult Pacific lamprey in the Columbia and Snake rivers (Moser et al. 2002), thus effecting larval recruitment in the basin (Moser and Close in press). Adult Pacific lamprey also declined in numbers in the Umatilla River, a tributary of the Columbia River (Close and Jackson 2001). In addition to hydro power dams in the Columbia River, habitat alterations and chemical treatments have been involved in the collapse of Pacific lamprey populations in the Umatilla River (Close 1999). To initiate the restoration effort, CTUIR began developing a restoration plan in 1998. The goal of the lamprey research and restoration project is to restore natural production of Pacific lampreys in the Umatilla River to self-sustaining and harvestable level. This report is summarizing the studies and restoration efforts concluded in 2002.

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117 pages

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  • Report No.: DOE/BP-00005455-6
  • Grant Number: 5455
  • DOI: 10.2172/962980 | External Link
  • Office of Scientific & Technical Information Report Number: 962980
  • Archival Resource Key: ark:/67531/metadc933287

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Creation Date

  • July 1, 2003

Added to The UNT Digital Library

  • Nov. 13, 2016, 7:26 p.m.

Description Last Updated

  • Dec. 7, 2016, 6:39 p.m.

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Close, David; Aronsuu, Kimmo & Jackson, Aaron. Pacific Lamprey Research and Restoration Project, Annual Report 2002., report, July 1, 2003; Portland, Oregon. (digital.library.unt.edu/ark:/67531/metadc933287/: accessed December 10, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.