2.3. Retention trees
On regeneration areas, existing snags, hollow and decaying trees, single windfalls or tree specimens from the
previous tree generation, rare broadleaved tree species,
large aspen and sallow trees are left in all cuttings, and other
silvicultural management practices. Storm resistant trees
having the possibility to develop into sturdy old trees, or
being otherwise valuable from the biodiversity point of view,
are favoured when selecting retention trees on a regeneration
area. Retention trees are left primarily in groups, and
preferably in the neighbourhood of the habitats that are
valuable for biodiversity. The recommended minimum
number of retention trees, mainly broadleaved trees like
aspen, birch, alder or willow, is five trees per hectare.