Both dams and watershed urbanization can impact the richness and abundance of both predators and their prey in aquatic ecosystems. The Bronx River is greatly impacted by both. Fish in the Bronx river, including alewife and American eel, which are of conservation importance, rely on aquatic macroinvertebrates as a food source.

Little is known about how dams and urbanization impact the trophic interactions between fish and macroinvertebrates, and understanding these dynamics within the Bronx River may be key for successful restoration of important fish populations.