Genetic identification of Chinook salmon in the Columbia River estuary: stock-specific distributions of juveniles in shallow tidal freshwater habitats
Abstract
Extensive efforts are underway to restore and conserve nearshore shallow water habitats in the Columbia River estuary with the intent of increasing the estuary's capacity to provide food, refuge, and other crucial ecosystem functions for juvenile salmon. Juvenile Chinook Salmon Oncorhynchus tshawytscha, including those from the five Evolutionarily Significant Units listed as threatened or endangered under the U.S. Endangered Species Act, are particularly expected to benefit from the habitat improvements. However, information on the temporal and spatial estuarine distributions of juveniles from specific populations or stocks is lacking and impedes restoration planning for at-risk salmon. We conducted a series of surveys to sample juvenile Chinook Salmon occupying shallow-water habitats with sandy beaches in six hydrogeomorphic reaches across the tidal freshwater portion of the estuary and also at one long-term reference site near the estuary mouth. Sites were sampled bimonthly over 26 months during 2010–2012 to capture seasonal patterns of stock-specific habitat use. Genetic stock identification analyses were conducted on the samples using microsatellite DNA loci and genotypic data representing spawning populations from throughout the Columbia River basin. We identified three tidal freshwater areas that could be distinguished by genetic stock composition. Lower tidal freshwater reaches were dominated by fall-run juveniles from West Cascade tributaries (>70%), upper reaches had…
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Some regional stock group's capture months and sizes suggest a wide range of freshwater tidal occupancy.
“Similarly, some regional stock group’s capture months and sizes suggest a wide range of freshwater tidal occupancy [16]”
From Estimating Common Growth Patterns in Juvenile Chinook Salmon (Oncorhynchus tshawytscha) from Diverse Genetic Stocks and a Large Spatial Extent (2016) · cites this paper as [16]
Yearling smolts from interior stocks of steelhead and Chinook Salmon rapidly move through the Columbia River estuary in deep waters of the main channel and are rarely encountered close to shore.
“In the Columbia River basin, yearling smolts from interior stocks of steelhead and Chinook Salmon (those originating above Bonneville Dam, located at river kilometer [rkm] 234; rkm 0 = Columbia River mouth) rapidly move through the Columbia River estuary (CRE; defined as tidal waters below Bonneville Dam) in deep waters of the main channel and are rarely encountered close to shore”
From Life in the Fast Lane: Feeding and Growth of Juvenile Steelhead and Chinook Salmon in <scp>Main‐Stem</scp> Habitats of the Columbia River Estuary (2022) · cites this paper as Teel et al. 2014
Previous studies have warned of potential competition between larger and numerically dominant hatchery salmon and smaller wild salmon in the CRE based on high temporal and spatial overlap in shallow and main-stem habitats.
“Previous studies have warned of potential competition between larger and numerically dominant hatchery salmon and smaller wild salmon in the CRE based on high temporal and spatial overlap in shallow and main-stem habitats (Bottom et al. 2011(Bottom et al. , 2021;;Teel et al. 2014;Weitkamp et al. 2015).”
From Life in the Fast Lane: Feeding and Growth of Juvenile Steelhead and Chinook Salmon in <scp>Main‐Stem</scp> Habitats of the Columbia River Estuary (2022) · cites this paper as Teel et al. 2014
The stock-specific density of juvenile salmon in restoring wetland habitats is a negative function of the distance of the natal stream from the wetland, with proportionally greater representation from local stocks than distant stocks in LCRE wetlands.
“there is proportionally greater representation from local stocks than more distant stocks in LCRE wetlands (Roegner et al. 2010, 2012, Teel et al. 2014).”
From Evidence‐based evaluation of the cumulative effects of ecosystem restoration (2016) · cites this paper as Teel et al. 2014
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- Authors
- Teel, D. J., Bottom, D. L., Hinton, S. A., Kuligowski, D. R., McCabe, G. T., McNatt, R., Roegner, G. C., Stamatiou, L. A., & Simenstad, C. A.
- Affiliations
- National Oceanic and Atmospheric Administration (US)
- Pacific States Marine Fisheries Commission (US)
- University of Washington (US)
- Corresponding author
- Teel, David J.
- Venue
- North American Journal of Fisheries Management
- Publisher
- Oxford University Press (OUP)
- Published
- 2014-05-27
- Volume
- 34
- Issue
- 3
- Pages
- 621-641
- ISSN
- 0275-5947 (ISSN-L)
- 1548-8675
- OpenAlex
- W2047298216
- Cited by
- 29
- References
- 53
- Citations by year
- 2026: 2 · 2025: 1 · 2024: 1 · 2023: 1 · 2022: 3 · 2021: 3 · 2018: 3 · 2017: 1 · 2016: 7 · 2015: 5 · 2014: 1 · 2012: 1
- FWCI
- 4.38
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- North American Journal of Fisheries Management (publishedVersion)
- Funders
- NOAA Fisheries
- Topics
- Physical Sciences › Environmental Science › Nature and Landscape Conservation › Fish Ecology and Management Studies
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic diversity and population structure
- Physical Sciences › Environmental Science › Global and Planetary Change › Marine and fisheries research
- Keywords
- Oncorhynchus tshawytscha, Columbia River estuary, genetic stock identification, sandy beaches, microsatellite genotypes, evolutionarily significant units, hatchery-reared fish, life history types, estuary restoration, seasonal habitat use
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