Invasive Species Ireland

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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Canadian waterweed

Elodea canadensis

Status:

Established

Habitat:

Freshwater

Threats:

Creates single species stands. Outcompetes native plants. Reduces waterflow.

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Carpet sea squirt

Didemnum vexillum

Status:

Established

Habitat:

Marine

Threats:

Alter marine habitats.

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Chinese bushclover

Lespedeza juncea var. sericea

Status:

Potential

Habitat:

Terrestrial

Threats:

Outcompetes native species

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Chinese mitten crab

Eriocheir sinensis

Status:

Potential

Habitat:

Freshwater

Threats:

Threatens ecosystem functioning and protected species.

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