Invasive Species Northern Ireland

Himalayan knotweed

Koenigia polystachya

Status:

Established

Habitat:

Terrestrial

Threats:

Quick growing and difficult to control. Habitat generalist.

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Hottentot fig

Carpobrotus edulis

Status:

Established

Habitat:

Terrestrial

Threats:

Changes to dune environments.

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Japanese honeysuckle

Lonicera japonica

Status:

Established

Habitat:

Terrestrial

Threats:

Competition with native plants, changing the habitat, kill trees and hedges by climbing

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Japanese knotweed

Fallopia japonica

Status:

Established

Habitat:

Terrestrial

Threats:

Reduction of species diversity.

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Japanese Rose

Rosa rugosa

Status:

Established

Habitat:

Terrestrial

Threats:

Alters soil nutritrion, leading to altered native species biodiversity. May alter coastal landscape by forming sand dunes

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Mandarin Duck

Aix galericulata

Status:

Established

Habitat:

Terrestrial

Threats:

Could compete with other hole-nesting ducks such as Goldeneye and Goosander for nesting habitat

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Montbretia

Crocosmia X crocosmiiflora

Status:

Established

Habitat:

Terrestrial

Threats:

Outcompetes native species. Can cause streambank collapse if population is too high.

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Muntjac deer

Muntiacus reevesi

Status:

Established

Habitat:

Terrestrial

Threats:

Preventing seed regeneration of important conservation species.

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New Zealand flatworm

Arthurdendyus triangulatus

Status:

Established

Habitat:

Terrestrial

Threats:

Significant reduction of native earthworms.

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