The steady rise in alien invasions is troubling scientists, who are concerned about the innocent Earth creatures that could be threatened.
A group of researchers reported that the number of invasive plant and animal species continues to increase around the world and constitutes a threat to biosecurity. Their study, in the journal Proceedings of the National Academy of Sciences, analyzes how many of those plants and animals are being encountered as invasive species for the first time — referring to them as “emerging alien species” — and says that understanding how they operate will be crucial for understanding and mitigating their effect on native species and on the rest of the environment. Click on the following paragraph to access the full story.
The study points to “expanding trade networks and environmental change” as drivers of these alien invasions. Humans have introduced non-native, invasive species to many places around the globe as they have explored and expanded their domains, but it’s not the only way invasive species spread. In Antarctica, for example, some scientists have asserted that climate change could allow invasive animals to threaten others, as ice melts and leaves more ground open for those species to cover.