Division Step 2 Consequences of non-target species establishment and spreading

United Kingdom

Event	Likelihood(H, M, L)	Certainty(VC, RC, RU, VU)	Comments in support of assessment^f1
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.
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^f2

Annotations

f1: The assessor is referred for guidance to Appendix A and Appendix B of the ICES Code of Practice.
f2: 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.