Species Accounts – Invasive Species Northern Ireland

Ring - necked or rose - ringed parakeet

Psittacula krameri

Status:

Early stage establishment

Habitat:

Terrestrial

Threats:

Competition to native hole - nesting birds

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Roe deer

Capreolus capreolus

Status:

Established

Habitat:

Terrestrial

Threats:

Overgrazing and trampling on vegetation, preventing regeneration of woodland.

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Ruddy duck

Oxyura jamaicensis

Status:

Established

Habitat:

Terrestrial

Threats:

Negative impacts on the survival of the White-headed duck.

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Ruffe

Gymnocephalus cernuus

Status:

Potential

Habitat:

Freshwater

Threats:

Negative impacts on native fish communities.

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Rugulopteryx okamurae

Status:

Potential

Habitat:

Marine

Threats:

Displaces native species, reduces biodiversity and alters community structure. Floating biomass impacts fisheries and tourism

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Russian vine

Fallopia baldschuanica

Status:

Established

Habitat:

Terrestrial

Threats:

Outcompetes native species.

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Rusty Crayfish

Faxonius rusticus

Status:

Potential

Habitat:

Freshwater

Threats:

Outcompete native crayfish for food and resources, reduce aquatic vegetation cover

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Sacred ibis

Threskiornis aethiopicus

Status:

Potential

Habitat:

Terrestrial

Threats:

It outcompetes and predates on native water birds

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Salmonberry

Rubus spectabilis

Status:

Established

Habitat:

Terrestrial

Threats:

Forms dense thickets and displaces native biodiversity

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