Effective management of invasive species

This webinar will give an overview of relevant legislation and discuss some of the latest approaches to risk assessment and management of invasive species for those managing infrastructure and large landholdings and across the wider construction industry.



There are nearly 2,000 invasive non-native species (INNS) established in GB; the majority being terrestrial (c. 1,800) as well as those established in marine and freshwater environments (c.160). The number of INNS establishing themselves in GB is around 10-12 annually. Well-known animal INNS include American mink, signal crayfish and the grey squirrel, alongside plant species such as Japanese Knotweed.

Costs and environmental impacts associated with invasive species have been increasing dramatically in recent years. The annual cost to the GB economy is at least £1.7 billion; with Japanese Knotweed alone estimated to account for £166 million of that total. Associated with the economic impact there is the potential for significant disruption to habitats and ecosystems; coupled with social impacts in terms of human health and nuisance.

This webinar will give an overview of relevant legislation and will discuss recent updates and approaches to invasive species risk assessment and management supported by case studies.

Why attend

This webinar will provide an opportunity to:

  • Learn about risk assessment and management of invasive species
  • Hear case studies
  • Ask questions of the presenters through an interactive Q&A.

Dr Mark Fennell, AECOM
Invasive Non-native Species Legislation - A Changing Landscape

Tom King, Canal and River Trust 

Managing INNS on our Waterways: Issues and Opportunities

Dr Dan Jones, Advanced Invasives

Japanese Knotweed: Mitigating Risk


Who should attend

Managers of infrastructure and large landholdings, developers, construction project and site managers, and ecologists and biodiversity professionals. 

Monday 18th November 2019
12:30 - 13:30

Free for CIRIA members
£35 + VAT for non-members

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prior to the webinar.
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020 7549 3300  or 
email enquiries@ciria.org. 
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Further information
For further information on CIRIA membership and other services, please contact:
Tel: 020 7549 3300
Fax: 020 7549 3349
Email: enquiries@ciria.org
Web: www.ciria.org
18/11/2019 - 18/11/2019

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