Open AccessMoving out of town? The status of alien plants in high‐Arctic Svalbard, and a method for monitoring of alien flora in high‐risk, polar environments
Author(s) -
Bartlett Jesamine C.,
Westergaard Kristine Bakke,
Paulsen Ingrid M. G.,
Wedegärtner Ronja E. M.,
Wilken Florian,
Ravolainen Virve
Publication year - 2021
Publication title -
ecological solutions and evidence
Language(s) - English
Resource type - Journals
ISSN - 2688-8319
DOI - 10.1002/2688-8319.12056
Subject(s) - alien , habitat , ecology , geography , human settlement , arctic , invasive species , flora (microbiology) , climate change , biology , population , archaeology , demography , census , genetics , bacteria , sociology
AbstractRising human activity in the Arctic, combined with a warming climate, increases the probability of introduction and establishment of alien plant species. While settlements are known hotspots for persistent populations, little is known about colonization of particularly susceptible natural habitats. Systematic monitoring is lacking and available survey methods vary greatly. Here, we present the most comprehensive survey of alien vascular plant species in the high‐Arctic archipelago of Svalbard to date, aimed at (i) providing a status within settlements; (ii) surveying high‐risk habitats such as those with high visitor numbers and nutrient enrichment from sea bird colonies; (iii) presenting a systematic monitoring method that can be implemented in future work on alien plant species in Arctic environments; and (iv) discuss possibilities for mapping alien plant habitats using unmanned aerial vehicles. The systematic grid survey, covering 1.7 km 2 over three settlements and six bird cliffs, detected 36 alien plant species. Alien plant species were exclusively found in areas of human activity, particularly areas associated with current or historic animal husbandry. The survey identified the successful eradication of Anthriscus sylvestris in Barentsburg, as well as the rapid expansion of Taraxacum sect. Ruderalia over the last few decades. As there is currently no consistent method for monitoring alien plant species tailored to polar environments, we propose a systematic methodology that could be implemented within a structured monitoring regime as part of an adaptive monitoring strategy towards alien species in the Arctic.