• Isotopes and Fish Eyes: New tools to track population-level benefits of floodplains for Chinook salmon
    • Miranda Tilcock (Center for Watershed Sciences, UC Davis)
    • January 12, 2022

Prior work has shown that juvenile Chinook salmon reared on a floodplain have reduced sulfur isotopic signatures relative to those in an adjacent river. This study evaluates δ34S in the layers of the eye lens in both juvenile Chinook salmon prior to ocean entry and spawning adults from the same cohort, allowing researchers to identify proportions of returning adult fish that were reared in the critical floodplain habitat.

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