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Species |
Distribution |
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Photo courtesy of GB Non Native Species Secretariat |
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Impacts |
Pathways |
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Management |
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Prevention Should not be released in the wild. Dispose of garden and pond waste responsibily. Check vehicles, boats, equipment and clothing for plant fragments when leaving infested sites and clean if necessary. Physical Control Covering the plants to block light may result in eradication. In reservoirs and lake systems the water level may be lowered in winter with the aim of controlling the population. The success is related to the degree of desiccation, air temperature (at best freezing conditions after drainage), and the presence of snow. As the plant spreads through fragmentation, mechanical controls should only be undertaken during mass developments and when the risk of spread to other water systems is minimal. Using mechanical controls during an ongoing invasion may promote the spread due to fragmentation. Chemical Control Trials have been undertaken by using various chemical formulations, such as complexed copper, dipotassium salt and fluridone. More information on control measures is avaiable from the Centre for Ecology and Hydrology, Centre for Aquatic Plant Management Information Sheet 7 (Click here to download) Note all chemical treatments must be licensed by SEPA. Biological Control A fungus (Fusarium sp.) has been identified that damaged Elodea in laboratory tests. Native herbivorous fish/birds may provide another biocontrol option. |
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Links |
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Non Native Species Secretariat identification guide
Non Native Species Secretariat Fact Sheet
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The Need for Action
Without some form of coordinated and systematic approach to the prevention of introduction and control of the spread of INNS and fish diseases, it is likely that the ecological, social and economic impacts and the costs for mitigation, control and eradication of these species and diseases will continue to increase. Get in touch|