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- W4281738216 abstract "The migration timing of Pacific salmon in the Columbia River basin is subject to multiple influences related to climate, human water resource management, and lagged effects such as oceanic conditions. We apply an information theory-based approach to analyze drivers of adult Chinook salmon migration within the spring and fall spawning seasons and between years based on salmon counts at dams along the Columbia and Snake Rivers. Time-lagged mutual information and information decomposition measures, which characterize lagged and nonlinear dependencies as reductions in uncertainty, are used to detect interactions between salmon counts and lagged streamflows, air and water temperatures, precipitation, snowpack, climate indices and downstream salmon counts. At a daily timescale, these interdependencies reflect migration timing and show differences between fall and spring run salmon, while dependencies based on variables at an annual resolution reflect long-term predictability. We also highlight several types of joint dependencies where predictability of salmon counts depends on the knowledge of multiple lagged sources. This study illustrates how co-varying human and natural drivers could propagate to influence salmon migration timing or overall returns, and how nonlinear types of dependencies between variables enhance predictability of a target. This information-based framework is broadly applicable to assess driving factors in other types of complex water resources systems or species life cycles." @default.
- W4281738216 created "2022-06-13" @default.
- W4281738216 creator A5010645491 @default.
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- W4281738216 date "2022-06-09" @default.
- W4281738216 modified "2023-09-27" @default.
- W4281738216 title "An information theory-based approach to characterize drivers of upstream salmon migration" @default.
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- W4281738216 doi "https://doi.org/10.1371/journal.pone.0269193" @default.
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- W4281738216 hasPublicationYear "2022" @default.
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