Invasive Alien Species in the Arctic

NINA reports on Arctic Species in the Arctic with focus on Svalbald and Jan Mayen

Although invasive alien species threaten biological diversity globally, these species may be a particular threat to the sensitive Arctic environment. Invasive species are defined as species not native to an area that have been introduced to an area as a result of human activity.

In this report , we first summarize the status for mapping and monitoring activities for species present in the Arctic in the four main ecosystem types (terrestrial, freshwater, coastal and ma-rine). Based on previous mapping and monitoring activities of present species, we summarize the status for the mapping and monitoring of invasive alien species in the Arctic. Using identified knowledge gaps, the understanding for the potential for these invasive alien species to spread, and potential ecological impacts, we make recommendations for continued mapping and moni-toring of invasive alien species. There are numerous impact factors that could create large ef-fects and, thus, become a threat to the Arctic environment. Mapping of these impact factors and mechanisms of spread (pathways of introduction) will, therefore, be central for understanding these threats.

The report is in Norwegian with an English summary.


Jørn Thomassen, Sondre Dahle, Dagmar Hagen, Ditte Hendrichsen, Vivian Husa, Andrea Miller, Børge Moe, Virve Ravolainen, Paul E. Renaud, Kristine B. Westergaard.