Invasive species are known to significantly disrupt over that of the native ecosystems which is after outcompeting that patterning to the local species for resources, hence by altering that ehich has to do with habitats, and disrupting food chains and with the non-native organisms, hence fir exa ,ple For instance, the introduction 9f that of the zebra mussels within the North American waterways has outcompeted native mussels which has also disrupted the aquatic ecosystems.
Hence the ecological impacts of invasive species has to do with extending to native animal populations as the case may be, through the predatory invasive species, like that of the cane toads within Australia, threaten native wildlife just by poisoning predators, hence this native species can lead to cascading effects.
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Invasive species are a good thing. It means Nature is putting the most suited organisms in each changing environment. This is the natural way of things going back to the start of life on Earth. Species are meant to move around, and should not be confined by humans to any one place. We should stop trying to control everything. It won't work in the long term, and will only cause more ecological problems. Nature is the best at deciding what species should live in what parts of the world. Humans like to label things "invasive" or "problem species", and justify harmful policies like mass killing ("population control"), genetic modification, tagging and tracking, etc. We are not God and should stop trying to be.