The Northern Pike. Although it’s native to Norway, it has been moved around since and is now classified as ‘regionally invasive’. (Image Credit: Jik jik, CC BY-SA 2.0)
Two weeks ago, Norwegian Science Institute Artsdatabanken (ADB) announced that they would be changing the name of their invasive and alien species index. Formerly known as the Black List, the institute decided to use a name with less negative connotations, “Fremmedartslista“, loosely translated, the Alien Species list. Given this series’ focus on species from that list, it seems like an appropriate time to look at how we define the terms ‘alien’ or ‘invasive’ species.