Invasive species are found on every continent and cause severe ecological impacts. Many of these impacts are governed by feeding ecology, including predation of native species and competition with native species for food resources. In stream ecosystems in particular, the critical role of aquatic-terrestrial interactions closely governs food web structure, complicating interpretations of invader impacts. The spread of round goby (Neogobius melanostomus) in the Lake Erie watershed serves as an ideal model system for investigation of invasion dynamics and river food webs, as invasion is actively progressing in tributaries with diverse riparian plant communities. Our research aims to examine the interactions between community structure and food web dynamics across aquatic-terrestrial linkages. Using DNA metabarcoding, we will first examine changes in round goby diet as invasion progresses. We will additionally examine changes in native fish assemblages, relating community structure to round goby presence. Finally, we will determine whether invasional meltdown occurs across aquatic-terrestrial linkages by examining the impact of Japanese knotweed (Fallopia japonica)-dominated riparian communities on round goby diet and broader food web structure through stable isotope analysis and DNA metabarcoding of goby gut contents. Ultimately, this research will expand our understanding of the fundamental drivers and impacts of aquatic invasion through a detailed assessment of aquatic food web structure in the face of invasion.