For conservationists, invasive species are those non-native organisms that upset the balance of natural ecosystems. They become a problem because they can out-compete native organisms by corralling resources (water, food, etc.). With climate change, invasive plants may be better adapted to the temperature shifts in a given region. New pathogens capable of attacking native species may also emerge with a warming climate. This is another assault on our shrinking natural lands. For a more thorough discussion on invasive species read this article from: Mother Nature Network,