The BBC webpage has posted an interesting article on the impact of wall erected on the Polish-Belarussian border on the ecosystem of Białowieża Primeval Forest, in the context of other similar border fences all around the globe. The article cites prof. Rafał Kowalczyk from MRI PAS.

https://www.bbc.com/future/article/20221212-how-national-border-walls-are-splitting-ecosystems-apart