Species Accounts – Invasive Species Northern Ireland

Smooth cordgrass

Spartina anglica

Status:

Established

Habitat:

Marine

Threats:

Negative impacts on native intertidal communities.

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Snowberry

Symphoricarpos albus

Status:

Established

Habitat:

Terrestrial

Threats:

Forms dense thickets and displaces native biodiversity

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Sosnowsky’s hogweed

Heracleum sosnowskyi

Status:

Potential

Habitat:

Terrestrial

Threats:

Once established, the species is almost impossible to eradicate

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Spanish bluebell

Hyacinthoides hispanica

Status:

Established

Habitat:

Terrestrial

Threats:

Competition with native plants, hybridisation with native bluebell

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Spiny-cheek crayfish

Orconectes limosus

Status:

Potential

Habitat:

Freshwater

Threats:

Threat to the native European crayfish

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Striped eel catfish

Plotosus lineatus

Status:

Potential

Habitat:

Marine

Threats:

Outcompetes and predates on native species

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Topmouth gudgeon

Pseudorasbora parva

Status:

Potential

Habitat:

Freshwater

Threats:

Negative impacts on native fish and vegetation species.

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Tree-of-heaven

Ailanthus altissima

Status:

Potential

Habitat:

Terrestrial

Threats:

Highly adaptable. Can outcompete native species

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Tropical fire ant

Solenopsis geminata

Status:

Potential

Habitat:

Terrestrial

Threats:

Interferes with native seed dispersal. Consumes native and commercially important seeds and seedlings. Decline in native ants.

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