Bio-security & Preserving our rivers

Invasive Species and their Effects

Hydrocotyle ranunculoides
Floating Pennyworth


Clogs waterways and negatively impacts on native species and ecosystems. Could you imagine trying to run a river and come across this .



Cercopagis pengoi

Fishhook Waterflea


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At the moment this threatens native ecosystems and species but has not become an invasive species but could very easily .
It clogs nets and also eats plankton which the fry of fish need to eat .



Dreissena Polymorpha
Zebra Mussle




Fouling, negative impacts on native species and local extinction of unionids.

If you swim and these are on the river bed be prepared to pay for new gear , they are like razor blades.

Unfortunately these are already in Lough Corrib but we can help stop the spread of these




Heracleum mantegazzianum
Giant Hogweed
DO NOT TOUCH



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Giant hogweed is a tall (usually 3 – 5m).
DO NOT TOUCH.
The sap is contains a phototoxic sap. It can cause burns and severe skin irritation .
Seek medical advice IMMEDIATELY
Keep affected area away from light .
Wash affected area with cold water .
If this goes in your eyes you may go blind
YOU DO NOT WANT TO GET THIS ON YOU.
The reaction can occur for up to 6 years



These are only a few of the invasive species in Ireland at the moment.
There are a 100+ registered non native species threatening Ireland at the moment at we can help prevent this.
Clean, Drain, and Dry!


1. Drain your boat before and after getting off the water

2. Allow all gear to dry , including boat ,paddle and any gear that is worn

3. Remove all visible debris . Plant matter and mud must be taken off


Use Virkon Spray after every river.
Spray boats down well , no need to wash it off


Virkon is highly effective at removing fungi bacteria mold and viruses. Degrades quickly in the environment , not irritant to hands or eyes