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Concurrent warming and browning eliminate cold-water fish habitat in many temperate lakes

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Stephen F. Jane, Thomas M. Detmer, Siena L. Larrick, and Peter B. McIntyre, 2024-01-02, Concurrent warming and browning eliminate cold-water fish habitat in many temperate lakes: PNAS, v. 121, no. 2.

Summary

Cold-water species in temperate lakes face two simultaneous climate-driven ecosystem changes: warming and browning of their waters. Browning refers to reduced transparency arising from increased dissolved organic carbon (DOC), which absorbs solar energy near the surface. It is unclear whether the net effect is mitigation or amplification of climate warming impacts on suitable oxythermal habitat (<20 °C, >5 mgO/L) for cold-loving species because browning expands the vertical distribution of both cool water and oxygen depletion. We analyzed long-term trends and high-frequency sensor data from browning lakes in New York’s Adirondack region to assess the contemporary status of summertime habitat for lacustrine brook trout. Across two decades, [...]

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  • National and Regional Climate Adaptation Science Centers
  • Northeast CASC

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citationTypeJournal Article
journalPNAS
parts
typeDOI
valuehttps://doi.org/10.1073/pnas.2306906120
typeVolume
value121
typeNumber
value2
typeArticle
valuee2306906120

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