The effectiveness of barriers to badger Meles meles immigration in the Irish Four Area project.

The article presents a study on the effect of barriers, such as external buffers and rivers, on the immigration of badger Meles meles during the Four Area project in Ireland. It is noted that the there was proactive culling of badgers at the location of the barriers. The researchers assume that all the badgers caught in the space of the removal areas came across the barriers and that all the badgers caught were immigrants. Using chi-square tests, the researchers claim that sea and external buffers are the most effective. They also emphasize the importance of understanding the effectiveness of barriers to the efficiency of badger management options.