Habitat quality of historic Snake River fall Chinook salmon spawning locations and implications for incubation survival: part 1, substrate quality

Hanrahan, Timothy P; Geist, David R; Arntzen, Evan V

doi:10.1002/rra.823

Title: Habitat quality of historic Snake River fall Chinook salmon spawning locations and implications for incubation survival: part 1, substrate quality

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Abstract

We evaluated substrate quality at two historic fall Chinook salmon (Oncorhynchus tshawytscha) spawning sites in the Snake River, Idaho, USA. The primary objective of this evaluation was to measure sediment permeability within these areas to determine the potential quality of the habitat in the event that anadromous salmonids are reintroduced to the upper Snake River. Riverbed sediments within the two sites in the upper Snake River were sampled using freeze cores and hydraulic slug tests. Sediment grain size distributions at both sites were typical of gravel-bed rivers with the surface layer coarser than the underlying substrate, suggesting the riverbed surface was armored. Despite the armored nature of the bed, the size of the largest material present on the riverbed surface was well within the size limit of material capable of being excavated by spawning fall Chinook salmon. The percentage of fines was low, suggesting good quality substrate for incubating salmon embryos. Geometric mean particle sizes found in this study compared to a 55% to 80% survival to emergence based on literature values. Hydraulic slug tests showed moderate to high hydraulic conductivity and were comparable to values from current fall Chinook salmon spawning areas in the Hells Canyon Reach of themore »« less

Authors:: Hanrahan, Timothy P; Geist, David R; Arntzen, Evan V

Publication Date:: Fri Jul 01 00:00:00 EDT 2005

Research Org.:: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 15016877

Report Number(s):: PNWD-SA-6142
TRN: US200703%%434

DOE Contract Number:: AC05-76RL01830

Resource Type:: Journal Article

Journal Name:: River Research and Applications, 21(5):455-467

Additional Journal Information:: Journal Name: River Research and Applications, 21(5):455-467

Country of Publication:: United States

Language:: English

Subject:: 54 ENVIRONMENTAL SCIENCES; RIVERS; EMBRYOS; HABITAT; HYDRAULIC CONDUCTIVITY; INCUBATION; PARTICLE SIZE; PERMEABILITY; SALMON; SEDIMENTS; SUBSTRATES; WATER QUALITY; IDAHO

Citation Formats


                    Hanrahan, Timothy P, Geist, David R, and Arntzen, Evan V. Habitat quality of historic Snake River fall Chinook salmon spawning locations and implications for incubation survival: part 1, substrate quality.  United States: N. p., 2005. 
        Web.  doi:10.1002/rra.823.

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                    Hanrahan, Timothy P, Geist, David R, & Arntzen, Evan V. Habitat quality of historic Snake River fall Chinook salmon spawning locations and implications for incubation survival: part 1, substrate quality.  United States.  https://doi.org/10.1002/rra.823

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                    Hanrahan, Timothy P, Geist, David R, and Arntzen, Evan V. 2005.  
        "Habitat quality of historic Snake River fall Chinook salmon spawning locations and implications for incubation survival: part 1, substrate quality".  United States.  https://doi.org/10.1002/rra.823.

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@article{osti_15016877,

  title        = {Habitat quality of historic Snake River fall Chinook salmon spawning locations and implications for incubation survival: part 1, substrate quality},

  author       = {Hanrahan, Timothy P and Geist, David R and Arntzen, Evan V},

  abstractNote = {We evaluated substrate quality at two historic fall Chinook salmon (Oncorhynchus tshawytscha) spawning sites in the Snake River, Idaho, USA. The primary objective of this evaluation was to measure sediment permeability within these areas to determine the potential quality of the habitat in the event that anadromous salmonids are reintroduced to the upper Snake River. Riverbed sediments within the two sites in the upper Snake River were sampled using freeze cores and hydraulic slug tests. Sediment grain size distributions at both sites were typical of gravel-bed rivers with the surface layer coarser than the underlying substrate, suggesting the riverbed surface was armored. Despite the armored nature of the bed, the size of the largest material present on the riverbed surface was well within the size limit of material capable of being excavated by spawning fall Chinook salmon. The percentage of fines was low, suggesting good quality substrate for incubating salmon embryos. Geometric mean particle sizes found in this study compared to a 55% to 80% survival to emergence based on literature values. Hydraulic slug tests showed moderate to high hydraulic conductivity and were comparable to values from current fall Chinook salmon spawning areas in the Hells Canyon Reach of the Snake River and the Hanford Reach of the Columbia River. Predicted estimates of mean egg survival at both sites (48% and 74%) equaled or exceeded estimates from fall Chinook salmon spawning areas in the Hells Canyon Reach and the Hanford Reach.},

  doi          = {10.1002/rra.823},

  url          = {https://www.osti.gov/biblio/15016877},
  journal      = {River Research and Applications, 21(5):455-467},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Fri Jul 01 00:00:00 EDT 2005},

  month        = {Fri Jul 01 00:00:00 EDT 2005}

}

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