Effects of climate change on stream temperature and salmonid habitats in a Cascades river basin DOI Creative Commons
Michael Krochta, Kara Anlauf‐Dunn,

Dave Bugni

et al.

Journal of Environmental Management, Journal Year: 2025, Volume and Issue: 387, P. 125843 - 125843

Published: May 21, 2025

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 and salmonid habitats in Clackamas River Basin, Oregon, USA. Using spatial network models CMIP6 projections under SSP2-4.5 SSP5-8.5 scenarios, we project mid- (2045-2074) late-century (2075-2100) temperature changes. These are then integrated with thermal tolerances intrinsic habitat metrics assess future suitability key species, including steelhead, coho, Chinook, bull trout. Stream trends from 1991 2023 reveal basin-wide warming, high-elevation tributaries demonstrating more resilience impacts while lower-elevation subwatersheds face greater vulnerability. Future indicate a basinwide maximum 7-day average daily increases 1.42 °C-2.04 °C midcentury, 1.84 °C-3.24 by end 21st century. reduce most thermally suitable trout an 27 %-36 % during mid-century time period, 35 %-51 end-of-century period. By linking climate-driven metrics, identify priority based projected where conservation efforts can maximize impact.

Language: Английский

Effects of climate change on stream temperature and salmonid habitats in a Cascades river basin DOI Creative Commons
Michael Krochta, Kara Anlauf‐Dunn,

Dave Bugni

et al.

Journal of Environmental Management, Journal Year: 2025, Volume and Issue: 387, P. 125843 - 125843

Published: May 21, 2025

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 and salmonid habitats in Clackamas River Basin, Oregon, USA. Using spatial network models CMIP6 projections under SSP2-4.5 SSP5-8.5 scenarios, we project mid- (2045-2074) late-century (2075-2100) temperature changes. These are then integrated with thermal tolerances intrinsic habitat metrics assess future suitability key species, including steelhead, coho, Chinook, bull trout. Stream trends from 1991 2023 reveal basin-wide warming, high-elevation tributaries demonstrating more resilience impacts while lower-elevation subwatersheds face greater vulnerability. Future indicate a basinwide maximum 7-day average daily increases 1.42 °C-2.04 °C midcentury, 1.84 °C-3.24 by end 21st century. reduce most thermally suitable trout an 27 %-36 % during mid-century time period, 35 %-51 end-of-century period. By linking climate-driven metrics, identify priority based projected where conservation efforts can maximize impact.

Language: Английский

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