Variability helps mammals to become invasive

From the time humans began discovering and conquering new continents, they also started transporting animals and plants around the world and releasing them in locations where they never occurred before. Most of these alien species died out quickly, but many established populations and some even multiplied and became invasive, causing tremendous economic and environmental harm. In a recently published article in the journal The American Naturalist, scientists from Spain, Switzerland and Germany argue that successful invaders are particularly variable and can therefore adapt to many different environmental conditions.

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