2022
DOI: 10.22541/au.166367703.36323701/v1
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Changes to the trophic structure of a desert fish community following river regulation and species turnover: implications for an endangered top predator

Abstract: A poor understanding of factors leading to species decline can result in inefficient or ineffective species restoration. Endangered Colorado Pikeminnow ( Ptychocheilus lucius) was nearly extirpated from the San Juan River, NM, USA and recent efforts to reestablish the species via hatchery augmentation of juveniles has yet to reach the targeted number of adults in the system. To assess how changes to the river’s food web could be limiting reestablishment of this top predator, we used stable isotope (δ C and δ N… Show more

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