The Correa River Ecology Laboratory investigates large rivers to understand the roles of temporal, spatial, and structural heterogeneity in maintaining biodiversity and fisheries productivity. Ongoing research in coastal rivers of the Southeastern USA explores links between floodplain forests and aquatic food webs. Research in lowland rivers of the Amazon and Pantanal regions of South America explores the evolutionary origin and ecological relevance of fish-forest interactions and fruit consumption by fish. Findings from our research inform monitoring, restoration, and Climate-Change resilience initiatives for riverine ecosystems.