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Decision support tools

Invasive species: identification kits

The invasive species pre-screening toolkits available on this page are based on VisualBasic code from the original Weed Risk Assessment (WRA) toolkit (Pheloung et al. 1999).

We are grateful to  P.C. Pheloung, P.A. Williams and S.R. Halloy for providing an open version of their original WRA toolkit, with permission to adapt the original code for the toolkits developed by Cefas listed below (also using new VisualBasic programming).

These toolkits are Crown copyright but may be downloaded for free, and freely distributed provided this notice is retained:

No warranty, expressed or implied, is made and users should satisfy themselves as to the applicability of the results in any given circumstance.

Risk analysis scheme for non-native species in aquaculture

The European non-native species risk analysis scheme (ENSARS) was developed as part of an EC project called "IMPASSE" (environmental impacts of alien species in aquaculture). This project was designed to support Community provisions relating to alien and locally absent species in aquaculture (see COM (2006) 154, 4.4.2006).

ENSARS incorporates the pre-screening tools available above, and the report to the EC in which ENSARS is described in detail is available to download for free here:

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© Crown Copyright 2014
Last Modified: 27 April 2014