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"The reason we have invasive species is because they came from somewhere else" Everything came from " somewhere else" if you take the long view.
by sorokod 8y ago
"The reason we have invasive species is because they came from somewhere else"
Everything came from " somewhere else" if you take the long view.
- YayamiOmate 8y agoHey you! Keep off, go away. You didn't evolve here!
- adrianN 8y agoTypically when species migrated before humans invented quick transportation, their predators migrated with them. It didn't happen very often that a species becomes invasive without humans having something to do with it.
- lemonad 8y agoNot an answer to parent comments, just wanted to emphasize that coming from "somewhere else" <=/=> invasive. Not an expert so there are likely edge cases but one example would be a meadow where many different plants grow, flowering from early spring to late autumn. Introducing a new plant could mean it finds its own niche in this system or could mean that it completely takes over the whole system, reducing the overall flowering period to a limited time and thus causing problems for pollinators. If the latter is the typical result, the plant would likely become classed as invasive.