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Encounters with aliens Invasive species - they're here!

By Helen Roy


Over the last century there has been a dramatic increase in the movement of so called alien species around the world as a consequence of international trade and travel. Invasive alien species, alongside climate change and habitat destruction, are considered to be one of the main drivers of biodiversity loss. Helen Roy asks: what are alien species and what threats do they pose

Topics: Ecology and Environment
Year: 2010
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