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Invasive Species Week 2023
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Invasive Species Ireland
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Species Accounts
Species Accounts
Species Accounts
Established
Freshwater
Marine
Terrestrial
Brackish
Potential
Freshwater
Marine
Terrestrial
Brackish
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Carpet sea squirt
Didemnum vexillum
Status:
Established
Habitat:
Marine
Threats:
Alter marine habitats.
Find out more ›
Devil’s tongue weed
Grateloupia turuturu
Status:
Established
Habitat:
Marine
Threats:
Outcompetes native species. Can survive in a wide range of habitats.
Find out more ›
Japanese skeleton shrimp
Caprella mutica
Status:
Established
Habitat:
Marine
Threats:
Reproduces quickly. Outcompetes native species.
Find out more ›
Leathery sea squirt
Styela clava
Status:
Established
Habitat:
Marine
Threats:
Competes against native species for food and space. Fouls boats, oyster beds and moorings
Find out more ›
Pacific oyster
Magallana gigas
Status:
Established
Habitat:
Marine
Threats:
Encrusts hard surfaces
Find out more ›
Slipper limpet
Crepidula fornicata
Status:
Established
Habitat:
Marine
Threats:
Habitat Alteration.
Find out more ›
Smooth cordgrass
Spartina anglica
Status:
Established
Habitat:
Marine
Threats:
Negative impacts on native intertidal communities.
Find out more ›
Wakame
Undaria pinnatifida
Status:
Established
Habitat:
Marine
Threats:
Habitat alteration. Loss of native biodiversity.
Find out more ›
Wire weed
Sargassum muticum
Status:
Established
Habitat:
Marine
Threats:
Competition with native species.
Find out more ›
Invasive Species Northern Ireland
Invasive Species Northern Ireland
Invasive Species Week
Invasive Species Week 2023
Five things you can do
Do one thing for nature pledge
Ideas for events and activities
Useful Resources
Back
Invasive Species Week 2022
ISW 2022 Events & Webinars
Back
Back
About ISNI
Research
Invasive Species Maps
Back
Legislation
EU IAS Regulation
Management Measures for Widely Spread Species
Back
Northern Ireland
Policy Documents for Northern Ireland
Back
Species Accounts
Species Alerts
American lobster – Retain & Report
List of identification guides
Back
What can I do?
Invasive Plant Management
Site Management Resources
Back
Biosecurity & Prevention
Pathway Action Plans
Check Clean Dry
Guidance for Anglers
Guidance for boaters
Guidance for canoeists, kayakers and stand up paddle boarders
Guidance for Aquaculture
Guidance for field workers
Guidance for clubs and managers of water bodies
Guidance for events
Check Clean Dry Resources
Back
Be Pet Wise
Be Plant Wise
Back
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