Species Accounts – Invasive Species Northern Ireland

Black rat

Rattus rattus

Status:

Established

Habitat:

Terrestrial

Threats:

Negative impacts on native flora and fauna.

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Bloody-red shrimp

Hemimysis anomala

Status:

Established

Habitat:

Freshwater

Threats:

Alteration of ecosystem dynamics. Competition with native species.

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Broadleaf watermilfoil

Myriophyllum heterophyllum

Status:

Potential

Habitat:

Freshwater

Threats:

It creates mats that impede the water flow and reduce sunlight and oxygen availability.

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Broomsedge bluestem

Andropogon virginicus

Status:

Potential

Habitat:

Terrestrial

Threats:

Aggressive coloniser of disturbed lands. Alters ecosystems.

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Brown bullhead catfish

Ameiurus nebulosus

Status:

Potential

Habitat:

Freshwater

Threats:

Negative impacts on native fish species.

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Brown or European Hare

Lepus europaeus

Status:

Established

Habitat:

Terrestrial

Threats:

Hybridises with native hare species. Has a broad diet.

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Brown rat

Rattus norvegicus

Status:

Established

Habitat:

Terrestrial

Threats:

Negative impacts on native flora and fauna.

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Brush-clawed shore crab

Hemigrapsus takanoi

Status:

Potential

Habitat:

Marine

Threats:

High reproductive capacity. Outcompete native crabs.

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Butterfly bush

Buddleja davidii

Status:

Established

Habitat:

Terrestrial

Threats:

Forms monocultures. Reproduces sexually and asexually. Displaces native species.

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