Invasive species can have various negative impacts on native ecosystems, including outcompeting native species for resources such as food and habitat, altering the natural balance of the ecosystem, spreading diseases and parasites, and disrupting the food chain. This can lead to a decrease in biodiversity, loss of native species, and overall ecosystem instability. Additionally, invasive species can also cause economic losses and harm agriculture, forestry, and human health. It is important to actively manage and prevent the spread of invasive species to protect native ecosystems.