In the Sierra Nevada, Lahontan cutthroat trout have struggled due to competition from non-native brook trout. A study conducted between 2005 and 2010 revealed that brook trout removal improved the survival rates of cutthroat fry significantly. Research indicated a notable increase in the number of cutthroat juveniles entering Independence Lake after brook trout removal. Long-term monitoring is necessary to determine if the recovery of the species is sustainable.
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