Supporting Information datasets for article: "Effects of Climate Change on stream temperature and salmonid habitats in the Clackamas River Basin, Oregon."


Authors:
Owners: Michael Krochta
Type: Resource
Storage: The size of this resource is 248.9 KB
Created: Jan 22, 2025 at 9:49 p.m.
Last updated: Feb 26, 2025 at 9:02 p.m.
Published date: Feb 26, 2025 at 9:02 p.m.
DOI: 10.4211/hs.25f3b33406bd4b8c81ef667e8f4c6d96
Citation: See how to cite this resource
Sharing Status: Published
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Abstract

This repository contains the Supporting Information Datasets for Krochta, M., Anlauf-Dunn, K., Bugni, D., & Chang, H. (2025, under review): Effects of Climate Change on stream temperature and salmonid habitats in the Clackamas River Basin, Oregon.

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 29.1% to 24.2% during the mid-century time period, and 41.9% to 55.1% 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.

Coverage

Spatial

Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
Place/Area Name:
Clackamas River Basin
Longitude
-122.2545°
Latitude
45.2338°

Temporal

Start Date: 01/01/1991
End Date: 01/01/2100
Marker
Leaflet Map data © OpenStreetMap contributors

Content

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Credits

Funding Agencies

This resource was created using funding from the following sources:
Agency Name Award Title Award Number
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
Heejun Chang Portland State University
Kara Anlauf-Dunn Oregon Department of Fish and Wildlife
David Bugni Clackamas River Basin Council

How to Cite

Krochta, M. (2025). Supporting Information datasets for article: "Effects of Climate Change on stream temperature and salmonid habitats in the Clackamas River Basin, Oregon.", HydroShare, https://doi.org/10.4211/hs.25f3b33406bd4b8c81ef667e8f4c6d96

This resource is shared under the Creative Commons Attribution CC BY.

http://creativecommons.org/licenses/by/4.0/
CC-BY

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