What is a key characteristic of ecosystems that have invasive species?

Invasive species are known for their ability to disrupt local ecosystems significantly. When an invasive species is introduced to a new environment, it often competes with native species for resources such as food and habitat. This competition can lead to declines in native populations, as the invasive species may have adaptations that allow them to thrive in those conditions, often outcompeting the native species. Additionally, invasive species can alter the physical environment, disrupt food webs, and introduce diseases, further destabilizing the ecosystem.

The presence of invasive species typically results in a loss of biodiversity, as native species may not be equipped to cope with the new competition. This disruption is not only detrimental to the native species but can also have cascading effects on the ecosystem as a whole, leading to decreased stability and resilience. Therefore, the key characteristic of ecosystems with invasive species is indeed the disruption of local ecosystems and competition with native species.