How can invasive species impact aquatic ecosystems?

Invasive species can significantly impact aquatic ecosystems by outcompeting native species for resources, which may lead to a decline or even extinction of those native species. When invasive species establish themselves in a new environment, they often do so without the natural predators or controls that keep their populations in check in their native habitats. This unchecked growth can disrupt existing food webs, as native species may be vital sources of food for other organisms.

In addition, these invasive species can alter habitats, changing the physical characteristics of the environment. For instance, they may thrive in conditions where native plants cannot, leading to shifts in the structural complexity of the habitat that many aquatic organisms rely on for shelter, breeding, and foraging. The introduction of invasive species can therefore profoundly destabilize the ecological balance, further diminishing the resilience and biodiversity of the aquatic environment.