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Supporting datasets for article "Effects of climate change on stream temperature and salmonid habitats in a Cascades river basin"
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| Type: | Resource | |
| Storage: | The size of this resource is 304.5 KB | |
| Created: | Apr 04, 2025 at 4:32 p.m. (UTC) | |
| Last updated: | Apr 07, 2025 at 1:23 p.m. (UTC) | |
| Published date: | Apr 07, 2025 at 1:23 p.m. (UTC) | |
| DOI: | 10.4211/hs.884d8badf48f4bc1a8dffc5c775de145 | |
| Citation: | See how to cite this resource | |
| Content types: | CSV Content |
| Sharing Status: | Published |
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| Views: | 937 |
| Downloads: | 35 |
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Abstract
Rising stream temperatures pose significant challenges to aquatic ecosystems, particularly for coldwater-adapted organisms like salmonids. This study examines the effects of climate change on stream temperatures and salmonid habitats in the Clackamas River Basin, Oregon, USA. Using spatial stream network models and CMIP6 climate projections under SSP2-4.5 and SSP5-8.5 scenarios, we project mid- (2045-2074) and late-century (2075-2100) stream temperature changes. These projections are then integrated with thermal tolerances and intrinsic habitat metrics to assess future habitat suitability for key species, including steelhead, coho, Chinook, and bull trout. Stream temperature trends from 1991–2023 reveal basin-wide warming, with high-elevation tributaries demonstrating more resilience to climate impacts while lower-elevation subwatersheds face greater vulnerability. Future projections indicate a basinwide maximum 7-day average of daily maximum stream temperature increases of 1.42°C to 2.04°C for the midcentury, and 1.84°C to 3.24°C by the end of the 21st century. These increases reduce the most thermally suitable habitats for steelhead, coho, Chinook, and bull trout by an average of 28% to 34% during the mid-century time period, and 32% to 49% by the end-of-century time period. By linking climate-driven temperature projections with habitat metrics, we identify priority subwatersheds based on projected thermal suitability where conservation efforts can maximize impact.
Subject Keywords
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Funding Agencies
This resource was created using funding from the following sources:
| Agency Name | Award Title | Award Number |
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| Oregon Department of Fish and Wildlife | Oregon Conservation and Recreation Fund | OCRF 2022-2-09 |
Contributors
People or Organizations that contributed technically, materially, financially, or provided general support for the creation of the resource's content but are not considered authors.
| Name | Organization | Address | Phone | Author Identifiers |
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| Heejun Chang | Portland State University | |||
| Kara Anlauf-Dunn | Oregon Department of Fish and Wildlife | |||
| David Bugni | Clackamas River Basin Council |
How to Cite
This resource is shared under the Creative Commons Attribution CC BY.
http://creativecommons.org/licenses/by/4.0/
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