Presentation on theme: "Controlling Gunnera tinctoria"— Presentation transcript:
1Controlling Gunnera tinctoria Where are we today?By: Cristina Armstrong and Bruce Osborne
2BackgroundGunnera tinctoria is an invasive plant to the west of Ireland.Established on Achill Island, possibly over 100 years.Native to Southern regions of South America, similar climatic conditionsLarge herbaceaous perennial plant growing over 2m tall and with up to 2m wide leaves.
3Outline Started in 2006 – Msc at UCD (Control & Mapping) Greenhouse experimentsField experimentsMappingEradication?
4Mapping Using field boundaries as a site: Presence/absence of G. tinctoria marked out.At each site:Percentage coverStand TypeSize (L,M,S)Habitat
50.69 km2 4.2 km2 = 0.46 % = 2.9 % Total Area Invaded Area = 55 football pitches!!
24Current Work Eradication on Clare Island Biodiversity Grant (Heritage Council)MappingMethods used in experimentIsland involvementFuture monitoring
25Conclusions Main habitats invaded: Agricultural landWaterwaysRoadsidesDisturbed landHypothesised that disturbance is facilitating the spread.Re-application of treatments requiredOther measures of control (physical, biological)
26Acknowledgements Bruce Osborne for his supervision. Javier, Angeles, Noeleen, Ale, Margherita, Mark, Lisa, Michael Bob and John for all their field assistance.Ray for his advice on greenhouse expt.Mayo County Council.- Carmel & Louise in GIS- Deirdre CunninghamHeritage Council – Funding