The future bison release in freedom in
the VNNP’s area, estimated for 2011, represented
the reason and the main object for this scientifical
research. It is well-known that the damages
produced by free European bison to forest
ecosystems, especially for the forest tree species,
represent one of the main ‘threats’ for the
reintroduction program. For this research, in two
consecutive years (2009 - 2010), we performed a
complete assessment of the damaged trees for a
surface of 45 ha inside the acclimatisation
enclosure. | 
