When an invasive non-native species arrives in an area for the first time, it is known as an introduction or incursion. Biosecurity describes all the measures put in place to prevent this happening. The project has two essential biosecurity tasks:
- Once the eradication is complete and Orkney is again stoat-free, long-term biosecurity is needed to prevent invasive species arriving.
- In the short-term, biosecurity is essential to prevent stoats spreading to other islands putting more native wildlife at risk and making the challenge to eradicate greater.