How do invasive species typically affect biodiversity?

Invasive species typically diminish local biodiversity by outcompeting native species for resources such as food, habitat, and sunlight. These non-native organisms often thrive in new environments, where they can grow rapidly and reproduce in large numbers without the natural predators or controls that would normally keep them in check. As a result, they can significantly alter ecological balances and disrupt local ecosystems.

For instance, when invasive species take over an area, they can lead to the decline or extinction of native species that are not adapted to compete effectively with these newcomers. This loss of native species reduces genetic diversity and disrupts food webs, ultimately leading to a decrease in overall ecosystem health and resilience. Thus, the impact of invasive species on biodiversity is primarily negative, as they undermine the complex interactions that sustain native flora and fauna.