Species Accounts – Invasive Species Northern Ireland

Japanese honeysuckle

Lonicera japonica

Status:

Established

Habitat:

Terrestrial

Threats:

Competition with native plants, changing the habitat, kill trees and hedges by climbing

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Japanese hop

Humulus scandens

Status:

Potential

Habitat:

Terrestrial

Threats:

Outcompetes native species.

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Japanese knotweed

Reynoutria japonica

Status:

Established

Habitat:

Terrestrial

Threats:

Reduction of species diversity.

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Japanese Rose

Rosa rugosa

Status:

Established

Habitat:

Terrestrial

Threats:

Alters soil nutritrion, leading to altered native species biodiversity. May alter coastal landscape by forming sand dunes

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Japanese skeleton shrimp

Caprella mutica

Status:

Established

Habitat:

Marine

Threats:

Reproduces quickly. 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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Kingsnake

Lampropeltis getula

Status:

Potential

Habitat:

Terrestrial

Threats:

Predates on native reptiles and possibly other native fauna. A potential disease and parasite vector

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Large-flowered waterweed

Egeria densa

Status:

Potential

Habitat:

Freshwater

Threats:

Competition with native plants, shading and blocking waterways, eutrophication and reduction of biodiversity

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