Invasive Species Northern Ireland

Giant reed

Arundo donax

Status:

Potential

Habitat:

Brackish

Threats:

Competition with native plants, shading of waterways

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Golden mussel

Limnoperna fortunei

Status:

Potential

Habitat:

Freshwater

Threats:

Fouls pipes, filters and intakes of water works. Colonises native bivalves and displaces native species. Increases algal blooms

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Golden wreath wattle

Acacia saligna (Acacia cyanophylla)

Status:

Potential

Habitat:

Terrestrial

Threats:

Outcompetes native species

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Gyrodactylus salaris

Status:

Potential

Habitat:

Freshwater

Threats:

Serious negative impacts on salmonid stocks.

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Indian house crow

Corvus splendens

Status:

Potential

Habitat:

Terrestrial

Threats:

Predator of bird and small mammal species.

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Japanese Eelgrass

Nanozostera japonica

Status:

Potential

Habitat:

Marine

Threats:

Can reduce seabird foraging opportunities

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Japanese hop

Humulus scandens

Status:

Potential

Habitat:

Terrestrial

Threats:

Outcompetes native species.

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Japanese stiltgrass

Microstegium vimineum

Status:

Potential

Habitat:

Terrestrial

Threats:

It creates dense impenetrable stands that crowd out the native vegetation within 3-5 years

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Killer shrimp

Dikerogammarus villosus

Status:

Potential

Habitat:

Freshwater

Threats:

Efficient predator. Adapatable to new freshwater systems. Highly mobile.

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