Invasive Species 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 herterophyllum

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 rat

Rattus norvegicus

Status:

Established

Habitat:

Terrestrial

Threats:

Negative impacts on native flora and fauna.

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Carpet sea squirt

Didemnum vexilum

Status:

Potential

Habitat:

Marine

Threats:

colonies overgrowing and swamping other species and covering fish spawning grounds, aquaculture cages etc.

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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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