Title:

Middle Fork Salmon River, Idaho, Chinook salmon redd count database, 1995-2021

Author(s):

Thurow, Russell F.; Guzevich, John W.; Nagel, David E.; Parkes-Payne, Sharon L.

Publication Year:

2024

How to Cite:

These data were collected using funding from the U.S. Government and can be used without additional permissions or fees. If you use these data in a publication, presentation, or other research product please use the following citation:

Thurow, Russell F.; Guzevich, John W.; Nagel, David E.; Parkes-Payne, Sharon L. 2024. Middle Fork Salmon River, Idaho, Chinook salmon redd count database, 1995-2021. Fort Collins, CO: Forest Service Research Archive. https://doi.org/10.2737/RDS-2024-0042

Abstract:

The Middle Fork Salmon River (MFSR) in Idaho is managed as a designated wild anadromous fish sanctuary with the objective of preserving the genetic integrity of wild, native salmonids. Despite abundant, high-quality natal (spawning and rearing) habitat, absence of hatchery fish, and low harvest rates, MFSR Chinook salmon and steelhead remain at risk of extirpation, primarily from factors outside the MFSR basin within the migration corridors of the Columbia and Snake rivers, estuaries, and the ocean. Habitat conditions throughout most of the MFSR are in excellent condition, and key limiting factors affecting these populations are from outside natal spawning and rearing areas. Concern for the persistence of Snake River Chinook salmon culminated in a final rule that listed Snake River spring-summer Chinook salmon as “Threatened” under the Endangered Species Act (ESA) of 1973.

This data publication contains tabular (comma-separated values file) and vector spatial data (shapefile and geopackage) of a spatiotemporal analysis of Chinook salmon distribution in the Middle Fork Salmon River drainage. The data were compiled from spatially continuous redd surveys (nest counts) encompassing all potential Chinook salmon spawning areas within the MFSR. Spatially continuous surveys were conducted via low-level helicopter flights and/or ground observers annually from 1995-2021 after Chinook salmon had completed spawning and while redds remained visible. The surveys were timed to coincide with the period of maximum spawning activity on a particular stream, and each transect was therefore assigned a target count-time window based on historic observations. Data include the longitude and latitude of the MFSR redds locations, name of the stream, year, and survey method (ground or helicopter).

Keywords:

biota; environment; geoscientificInformation; inlandWaters; Ecology, Ecosystems, & Environment; Animal ecology; Inventory, Monitoring, & Analysis; Monitoring; Wildlife (or Fauna); Fish; Chinook salmon; redds; distribution; Idaho; Middle Fork Salmon River; Frank Church River of No Return Wilderness

Related publications:

• Idaho Department of Fish and Game. 2019. Fisheries Management Plan, 2019–2024. Boise, ID: Idaho Department of Fish and Game. [accessed March 2019]. https://idfg.idaho.gov/fish/plans https://idfg.idaho.gov/sites/default/files/2019-2024-idaho-fisheries-management-plan-original.pdf
• Isaak, Daniel J.; Thurow, Russell F. 2006. Network-scale spatial and temporal variation in Chinook salmon (Oncorhynchus tshawytscha) redd distributions: patterns inferred from spatially continuous replicate surveys. Canadian Journal of Fisheries and Aquatic Sciences. 63(2): 285-296. https://doi.org/10.1139/f05-214 https://research.fs.usda.gov/treesearch/23715
• Matthews, Gene M.; Waples, Robin S. 1991. Status review for Snake River spring and summer chinook salmon. NOAA Technical Memorandum. NMFS F/NWC-200. Seattle, WA: National Marine Fisheries Service. https://repository.library.noaa.gov/view/noaa/48850
• More (6 total)

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