This chapter highlights several other research and knowledge gaps that impede a comprehensive understanding of impacts of invasive alien species. Compared to the information available on impacts on nature, there is incomplete data on impacts on nature’s contributions to people and good quality of life. Furthermore, there is very little systematic research on gender differences in impacts of invasive alien species beyond anecdotal evidence of direct impacts (for further examples see IPBES, 2022). Most studies on impacts of marine invasive alien species relate to impacts on nature, including ecosystem health.