An adult male American dipper (Cinclus mexicanus) gathers aquatic invertebrates to feed his hungry nestlings on Barnes Creek, Washington, USA.  The quality of this food can impact the condition of he and his mate, how many young they produce, and the life histories strategies they exhibit.  Here, we show how barriers to migratory fish limit nutrient subsidies and food resources, ultimately impacting these aspects of consumer ecology at the terrestrial-aquatic interface.  Our findings demonstrate how disruption of migratory connectivity can have cascading effects throughout food webs, ultimately limiting consumer fitness.
Photo taken by Christopher Tonra, May 2013  

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