Biodiversity
Due to the area's inaccessibility, it has been spared from large-scale forestry which has resulted in a unique biodiversity encompassing some 300 red-listed species dependent of coherent virgin lands. Most notably the Wood Grouse has a permanent presence in the reserve, and as the area is barely sufficient for the species it is regarded as important to maintain or if possible increase the size of the area. Old pasture-lands along the eastern and northern borders of the area adds further to its biodiversity, as do the Reeds in the Fleminsberg Bay (Flemingsbergsviken), the northern inflow of Lake Orlången, which an important locale for several species of bats. Two historical mines in the area are today filled with water and have become important locales for the rare Great Crested Newt.
Read more about this topic: Flemingsbergsskogen Nature Reserve