Academic Journal
Quantifying Chinook salmon habitat across flow regimes: high resolution modeling in Oregon's Willamette river basin.
| Τίτλος: | Quantifying Chinook salmon habitat across flow regimes: high resolution modeling in Oregon's Willamette river basin. |
|---|---|
| Συγγραφείς: | White, James S., Bartelt, Karen M., Kock, Tobias J., Overstreet, Brandon, Hansen, Gabriel, Wallick, Rose |
| Πηγή: | Frontiers in Ecology & Evolution; 2026, p1-16, 16p |
| Θεματικοί όροι: | Chinook salmon, Habitats, Riparian areas, Mating grounds, Regulation of rivers, Hydraulic models, Sediment sampling |
| Γεωγραφικοί όροι: | Oregon, Willamette River (Or.) |
| Περίληψη: | The Santiam and McKenzie River basins of western Oregon provide critical habitat for federally listed Upper Willamette River Spring Chinook salmon (Oncorhynchus tshawytscha). Streamflows in each basin are regulated in part by high-head multi-purpose dams; however, quantitative linkages between regulated streamflows and downstream habitat for juvenile and adult Chinook salmon remain limited. This study integrates high-resolution topo-bathymetric lidar, two-dimensional hydraulic models, and novel detailed sediment distribution models to evaluate habitat across a range of flows for over 400 river km. Results suggest that habitat quantity for two juvenile life stages (fry and parr) differs in response to streamflow; fry habitat appears to be relatively insensitive to streamflow, except in the downstream-most reaches of each river, while parr habitat generally increases from low to moderate flows, yet decreases at higher flows. Spawning habitat is largely inversely related to streamflow and is primarily limited by suitable substrate availability, likely reflecting sediment retention effects of upstream dams. Additionally, streamflow thresholds were identified where redd desiccation risk increases significantly with declining streamflow. These findings provide managers with spatially explicit tools to evaluate flow management tradeoffs during critical rearing and spawning periods and provide insights into habitat dynamics in large, regulated rivers. This work demonstrates how high-resolution modeling can support quantification of habitat at the landscape level. [ABSTRACT FROM AUTHOR] |
| Copyright of Frontiers in Ecology & Evolution is the property of Frontiers Media S.A. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Βάση Δεδομένων: | Complementary Index |
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| Header | DbId: edb DbLabel: Complementary Index An: 194968627 RelevancyScore: 1082 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 1082.41979980469 |
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| Items | – Name: Title Label: Title Group: Ti Data: Quantifying Chinook salmon habitat across flow regimes: high resolution modeling in Oregon's Willamette river basin. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22White%2C+James+S%2E%22">White, James S.</searchLink><br /><searchLink fieldCode="AR" term="%22Bartelt%2C+Karen+M%2E%22">Bartelt, Karen M.</searchLink><br /><searchLink fieldCode="AR" term="%22Kock%2C+Tobias+J%2E%22">Kock, Tobias J.</searchLink><br /><searchLink fieldCode="AR" term="%22Overstreet%2C+Brandon%22">Overstreet, Brandon</searchLink><br /><searchLink fieldCode="AR" term="%22Hansen%2C+Gabriel%22">Hansen, Gabriel</searchLink><br /><searchLink fieldCode="AR" term="%22Wallick%2C+Rose%22">Wallick, Rose</searchLink> – Name: TitleSource Label: Source Group: Src Data: Frontiers in Ecology & Evolution; 2026, p1-16, 16p – Name: Subject Label: Subject Terms Group: Su Data: <searchLink fieldCode="DE" term="%22Chinook+salmon%22">Chinook salmon</searchLink><br /><searchLink fieldCode="DE" term="%22Habitats%22">Habitats</searchLink><br /><searchLink fieldCode="DE" term="%22Riparian+areas%22">Riparian areas</searchLink><br /><searchLink fieldCode="DE" term="%22Mating+grounds%22">Mating grounds</searchLink><br /><searchLink fieldCode="DE" term="%22Regulation+of+rivers%22">Regulation of rivers</searchLink><br /><searchLink fieldCode="DE" term="%22Hydraulic+models%22">Hydraulic models</searchLink><br /><searchLink fieldCode="DE" term="%22Sediment+sampling%22">Sediment sampling</searchLink> – Name: SubjectGeographic Label: Geographic Terms Group: Su Data: <searchLink fieldCode="DE" term="%22Oregon%22">Oregon</searchLink><br /><searchLink fieldCode="DE" term="%22Willamette+River+%28Or%2E%29%22">Willamette River (Or.)</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The Santiam and McKenzie River basins of western Oregon provide critical habitat for federally listed Upper Willamette River Spring Chinook salmon (Oncorhynchus tshawytscha). Streamflows in each basin are regulated in part by high-head multi-purpose dams; however, quantitative linkages between regulated streamflows and downstream habitat for juvenile and adult Chinook salmon remain limited. This study integrates high-resolution topo-bathymetric lidar, two-dimensional hydraulic models, and novel detailed sediment distribution models to evaluate habitat across a range of flows for over 400 river km. Results suggest that habitat quantity for two juvenile life stages (fry and parr) differs in response to streamflow; fry habitat appears to be relatively insensitive to streamflow, except in the downstream-most reaches of each river, while parr habitat generally increases from low to moderate flows, yet decreases at higher flows. Spawning habitat is largely inversely related to streamflow and is primarily limited by suitable substrate availability, likely reflecting sediment retention effects of upstream dams. Additionally, streamflow thresholds were identified where redd desiccation risk increases significantly with declining streamflow. These findings provide managers with spatially explicit tools to evaluate flow management tradeoffs during critical rearing and spawning periods and provide insights into habitat dynamics in large, regulated rivers. This work demonstrates how high-resolution modeling can support quantification of habitat at the landscape level. [ABSTRACT FROM AUTHOR] – Name: Abstract Label: Group: Ab Data: <i>Copyright of Frontiers in Ecology & Evolution is the property of Frontiers Media S.A. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.3389/fevo.2026.1828470 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 16 StartPage: 1 Subjects: – SubjectFull: Oregon Type: general – SubjectFull: Willamette River (Or.) Type: general – SubjectFull: Chinook salmon Type: general – SubjectFull: Habitats Type: general – SubjectFull: Riparian areas Type: general – SubjectFull: Mating grounds Type: general – SubjectFull: Regulation of rivers Type: general – SubjectFull: Hydraulic models Type: general – SubjectFull: Sediment sampling Type: general Titles: – TitleFull: Quantifying Chinook salmon habitat across flow regimes: high resolution modeling in Oregon's Willamette river basin. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: White, James S. – PersonEntity: Name: NameFull: Bartelt, Karen M. – PersonEntity: Name: NameFull: Kock, Tobias J. – PersonEntity: Name: NameFull: Overstreet, Brandon – PersonEntity: Name: NameFull: Hansen, Gabriel – PersonEntity: Name: NameFull: Wallick, Rose IsPartOfRelationships: – BibEntity: Dates: – D: 30 M: 06 Text: 2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 2296701X Titles: – TitleFull: Frontiers in Ecology & Evolution Type: main |
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