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Invasive plant species are the second most notable threat to the UK’s native plants after habitat destruction. Invasive species can cause significant economic problems, such as structural damage and delays to developments. Management of such species can be resource intensive costing land holders millions of pounds.
CIRIA has recognised that a single best practice guidance document combining the knowledge of organisations that manage invasive plant and alien animal species is required. This project shall: evaluate the environmental and economic impact of invasive plant and alien animal species; describe how to identify them; list relevant legislation; advise on risk assessment; and explain the best control methods for each species.
Three of the most invasive plant species in the UK are Japanese knotweed (Fallopia japonica), Himalayan (Indian) balsam (Impatiens glandulifera) and New Zealand Pygmyweed (Crassula helmsii). The manual will identify the current risk species, including reference to plants and animals with potential to develop into future problems.
The project will be published as a guidance document for infrastructure owners, contractors, maintenance managers and local authorities on the management of invasive plants and animal species, including a range of relevant case histories.
The publication is scheduled for release in November 2008.
Highways Agency, Metronet Alliance, Defra, Transport Scotland, Cornwall County Council, CIRIA Core Programme Sponsors.
RPS Group Ltd
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