Invasive species can have a range of negative impacts on native ecosystems. They can outcompete native species for resources like food, water, and habitat, leading to a decrease in biodiversity. Invasive species can also disrupt natural ecosystems by altering nutrient cycling, changing habitats, and introducing new diseases. Additionally, they can affect the populations of native species, sometimes leading to declines or even extinctions. Overall, the presence of invasive species can have significant and long-lasting consequences for native ecosystems.