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Species Accounts
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Established
Freshwater
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Brackish
Potential
Freshwater
Marine
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Brown bullhead catfish
Ameiurus nebulosus
Status:
Potential
Habitat:
Freshwater
Threats:
Negative impacts on native fish species.
Find out more ›
Brown or European Hare
Lepus europaeus
Status:
Established
Habitat:
Terrestrial
Threats:
Hybridises with native hare species. Has a broad diet.
Find out more ›
Brown rat
Rattus norvegicus
Status:
Established
Habitat:
Terrestrial
Threats:
Negative impacts on native flora and fauna.
Find out more ›
Brush-clawed shore crab
Hemigrapsus takanoi
Status:
Potential
Habitat:
Marine
Threats:
High reproductive capacity. Outcompete native crabs.
Find out more ›
Butterfly bush
Buddleja davidii
Status:
Established
Habitat:
Terrestrial
Threats:
Forms monocultures. Reproduces sexually and asexually. Displaces native species.
Find out more ›
Canadian waterweed
Elodea canadensis
Status:
Established
Habitat:
Freshwater
Threats:
Creates single species stands. Outcompetes native plants. Reduces waterflow.
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Carpet sea squirt
Didemnum vexillum
Status:
Established
Habitat:
Marine
Threats:
Alter marine habitats.
Find out more ›
Chinese bushclover
Lespedeza juncea var. sericea
Status:
Potential
Habitat:
Terrestrial
Threats:
Outcompetes native species
Find out more ›
Chinese mitten crab
Eriocheir sinensis
Status:
Potential
Habitat:
Freshwater
Threats:
Threatens ecosystem functioning and protected species.
Find out more ›
Invasive Species Ireland
Invasive Species Ireland
About ISI
Research
Invasive Species Maps
Back
Legislation
Northern Ireland
Policy Documents for Northern Ireland
Ireland
European Union
Management Measures for Widely Spread Species
Back
Latest Ireland Legislation
Back
Species Accounts
Species Alerts
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What can I do?
Invasive Plant Management
Site Management Resources
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Biosecurity & Prevention
Check Clean Dry
Be Pet Wise
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