Why do exotic species have such an impact on local ecosystems Why are exotic species such as purple loosestrife a threat to biological diversity?

Exotic species, like purple loosestrife, often disrupt local ecosystems by outcompeting native species for resources such as light, nutrients, and space. Their rapid growth and reproduction can lead to monocultures, reducing habitat diversity and the availability of food and shelter for native wildlife. This displacement of native species threatens biological diversity, as it can lead to population declines or extinctions, altering ecosystem functions and resilience. Overall, the introduction of exotic species can significantly destabilize the intricate balance within local ecosystems.