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Capacity of Two Sierra Nevada Rivers for Reintroduction of Anadromous Salmonids: Insights from a High‐Resolution View
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2021
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Source: Transactions of the American Fisheries Society, 151(1), 13-41
[PDF-3.77 MB]
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Journal Title:Transactions of the American Fisheries Society
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Description:Historically, anadromous steelhead Oncorhynchus mykiss and spring-run Chinook Salmon O. tshawytscha used high-elevation rivers in the Sierra Nevada of California but were extirpated in the 20th century by construction of impassable dams. Plans to reintroduce the fish by opening migratory passage across the dams and reservoirs can only succeed if upstream habitats have the capacity to support viable populations of each species. To estimate capacity in the Tuolumne and Merced rivers of the central Sierra Nevada, we used a high-resolution approach based on remote sensing and dynamic habitat modeling. Our results suggested that for both species in both systems, sediment grainsizes would support widespread spawning and the water temperatures, depths, and velocities would generate amplecapacity for fry and juveniles. However, the unregulated Merced River was consistently too warm for adult Chinook
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Source:Transactions of the American Fisheries Society, 151(1), 13-41
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ISSN:0002-8487;1548-8659;
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Rights Information:CC0 Public Domain
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Rights Statement:This article has been contributed to by US Government employees and their work is in the public domain in the USA.
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