Category Archives: Invasive Species

Invaders in the Garden

The Japanese Knotweed, an invasive species often found in gardens (Image Credit: Max Pixel, CC0 Creative Commons)

Guest post by Malene Nygård

Garden plants have a long tradition in Norway; from being used as medicine and food in the gardens of Catholic monasteries in the Middle Ages to today’s exotic ornamental plants. But this tradition also represents several centuries of unmonitored introductions of alien species, and it has left its mark in Norwegian nature.

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The Alien Species List

The Greater Canada Goose, one of many species on Norway’s Alien Species List.

Guest post by Malene Nygård

Lately, alien species have gained a lot of attention, making headlines for all the wrong reasons. Headlines like ‘Alien species are floating on plastic to the Norwegian shore’, ‘Aggressive blind passengers threaten Norwegian blueberries’, and ‘Unwanted species crossing the boarder threaten Norwegian plants’ are example of headings covering newspapers just in the last year. But what exactly is an alien species, and what makes them so unwanted?

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