Invasive species can significantly impact native ecosystems by altering food webs, habitat structures, and resource availability. They often outcompete native species for resources, potentially leading to declines or extinctions. Invasive species can also introduce new diseases and pests to which native species have no resistance. Additionally, they may change the physical environment, such as altering nutrient cycles or fire regimes. These disruptions can diminish biodiversity and compromise ecosystem health and stability.