There are approximately 27 000 indigenous species in South Africa and 9 000 foreign plant species that have been introduced over the past few centuries. Of these 9 000 exotic or alien introductions, ...

Erik Irmer has been documenting the spread of invasive plant and animal species that disrupt native ecology across Europe. He focuses on humans’ interactions with these plants and animals. Aliens is ...

Europe-wide awareness campaign calls on companies and the public to prevent spread of harmful non-native plants and animals Invasive alien plants and animals threaten other wildlife and cost Europe’s ...