Invasive Species Northern Ireland

Alligator weed

Alternanthera philoxeroides

Status:

Potential

Habitat:

Freshwater

Threats:

Chokes up riverine habitats when it becomes established

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American bullfrog

Lithobates catesbeianus

Status:

Potential

Habitat:

Freshwater

Threats:

Can outcompete and displace native species. Spreads diesease.

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Amur sleeper

Perccottus glenii

Status:

Potential

Habitat:

Freshwater

Threats:

Voracious predator of amphibians and fish. Outcompetes native species. Possible disease vector

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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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Brown bullhead catfish

Ameiurus nebulosus

Status:

Potential

Habitat:

Freshwater

Threats:

Negative impacts on native fish 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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Common Carp

Cyprinus carpio

Status:

Potential

Habitat:

Freshwater

Threats:

Alters habitat by consuming plants and invertebrates. Can impact water quality by increasing turbidity.

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Dace

Leuciscus leuciscus

Status:

Potential

Habitat:

Freshwater

Threats:

Negative impacts on native salmonids.

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Fanwort

Cabomba caroliniana

Status:

Potential

Habitat:

Freshwater

Threats:

Competition with native species. Clogging of waterways. EU Species of Union Concern

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