Invasive Species Northern Ireland

Northern Snakehead

Channa argus

Status:

Potential

Habitat:

Freshwater

Threats:

Predation of native fish stocks, vector for disease and parasites

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Oak Processionary Moth

Thaumetopoea processionea

Status:

Potential

Habitat:

Terrestrial

Threats:

Tree pest. Health risk to humans and animals.

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Oriental bittersweet

Celastrus orbiculatus

Status:

Potential

Habitat:

Terrestrial

Threats:

Outcompetes native wildlife, can choke and shade host plants, sometimes killing them

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Oyster drill

Ceratostoma inornatum and Urosalpinx cinerea

Status:

Potential

Habitat:

Marine

Threats:

Serious impacts on oyster populations.

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Pacific Pink Humpback Salmon

Oncorhynchus gorbuscha

Status:

Potential

Habitat:

Freshwater

Threats:

Has a high reproductive rate. May predate on native plankton, crustaceans and smaller fish.

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Pallas' squirrel

Callosciurus erythraeus

Status:

Potential

Habitat:

Terrestrial

Threats:

Outcompeting native red squirrels, and damaging trees by stripping bark.

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Perennial veldtgrass

Ehrharta calycina

Status:

Potential

Habitat:

Terrestrial

Threats:

Prevents germination of native species

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Persian hogweed

Heracleum persicum

Status:

Potential

Habitat:

Terrestrial

Threats:

Ecological damage and a danger of burns to humans

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Pueraria sp.

Status:

Potential

Habitat:

Terrestrial

Threats:

Competes with native species. Crowds out native shrubs and trees

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