Montenegro can be divided into two main biogeographic regions, which include the Mediterranean Biogeographic Region and the Alpine Biogeographic Region. It is also home to three terrestrial ecoregions: Balkan mixed forests, Dinaric Mountains mixed forests, and Illyrian deciduous forests. It had a 2019 Forest Landscape Integrity Index mean score of 6.41/10, ranking it 73rd globally out of 172 countries.