# Council Regulation (EC) No 708/2007 of 11 June 2007 concerning use of alien and locally absent species in aquaculture, Division Step 2: Consequences of non-target species establishment and spreading

Extent: E+W+S+N.I.

The assessor is referred for guidance to Appendix A and Appendix B of the ICES Code of Practice.
The final rating for the consequences is assigned the value of the highest risk rating and final rating for the level of certainty is also assigned the value of the element with the lowest level of certainty.
Event
Likelihood(H, M, L)
Certainty(VC, RC, RU, VU)
Comments in support of assessment
The non-target species compete with or predate on native populations, leading to their extirpation.
Genetic mixing of the non-target species with local populations leads to a loss of genetic diversity.
Other undesirable events of ecological or pathological nature
Some of the abovementioned events persist even after removal of the non-target species.
Final rating

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Source: https://www.legislation.gov.uk/eur/2007/708/annex/II/part/2/division/2 (the official version)
Page: https://openlegislation.uk/eu-regulation-2007-708/annex-II/part-2/division-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.