Species Accounts – Invasive Species Northern Ireland

Feral ferret

Mustela furo

Status:

Established

Habitat:

Terrestrial

Threats:

Threatens protected bird species.

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Few-flowered garlic

Allium paradoxum

Status:

Established

Habitat:

Terrestrial

Threats:

Outcompetes native species. Spreads quickly.

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Finlayson's Squirrel

Callosciurus finlaysonii

Status:

Potential

Habitat:

Terrestrial

Threats:

Tree Damage through bark stripping, potential vector for diseases

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Fishhook waterflea

Cercopagis pengoi

Status:

Potential

Habitat:

Freshwater

Threats:

Competiton with native invertebrates. Negative impacts on native fish.

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Floating pennywort

Hydrocotyle ranunculoides

Status:

Established

Habitat:

Freshwater

Threats:

Clogs waterways and negatively impacts on native species and ecosystems.

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Floating primrose - willow

Ludwigia peploides

Status:

Potential

Habitat:

Freshwater

Threats:

Shades out native plants and changes water chemistry

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Fox squirrel

Sciurus niger

Status:

Potential

Habitat:

Terrestrial

Threats:

Outcompetes native red squirrel. Disease vector.

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Fringed water lily

Limnanthemum peltatum, N. nymphaeoides, N. peltata

Status:

Established

Habitat:

Freshwater

Threats:

Pioneer species. Fast growing. Spreads vegetatively.

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Giant hogweed

Heracleum mantegazzianum

Status:

Established

Habitat:

Terrestrial

Threats:

Public health hazard. Competition with native species.

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