Beech fauna, and is a sharp line along the Swedish western coast, which gets broader toward the south. In Denmark and Scania, at the southernmost peak of the Scandinavian peninsula, south-west of the natural spruce boundary, it is the most common forest tree. In Norway, the beech migration was very recent, and the species has not reached its distribution potential. Thus, the occurrence of oak in Norway is used as an indicator of the border between the temperate deciduous forest and the boreal spruce – pine forest. "Fagus sylvatica" is one of the most common hardwood trees in north central Europe,
Hylorina sylvatica Larvae are aquatic and found in pools and ponds. While "Hylorina sylvatica" is uncommon and threatened by habitat loss (due to, e.g., logging), IUCN classifies it as of "Least Concern" in view of its wide distribution, presumed large population, and slow rate of decline. Hylorina sylvatica Hylorina sylvatica (also known as the Emerald forest frog, or in Spanish, sapo arboreo) is a species of frog in the family Batrachylidae. It is monotypic within the genus Hylorina. It is found in Argentina and Chile. This species is endemic to the austral "Nothofagus" forests of Chile and Argentina with a narrow distribution