Volume 4,1 (1974) - Dansk Dendrologisk Forening

Det konstateres, at ingen vedplanter her i landet kan kaldes græsningsfaste
(bid-modstandsdygtige). De vil alle, selv de mest tornede,
kunne holdes helt væk fra et græsset område, og alle vedplanter vil
blive dræbt ved tilstrækkelig stærk græsningsintensitet. I den retning
er geder særlig effektive.
Græsning udført af tunge planteædere selv i ringe tal vil ved disses
trampen udrydde Lyng og Revling på det græssede areal. Det samme
gælder trafik af mennesker f. eks. med vogne, men også til fods.
English Summary
The shaping of tree and shrub crowns by 1) wind and 2) grazing animals
causing hedgelike surfaces has been studied. Strong winds result
in smooth and dense surfaces on juniper, blackthorn and hawthorn,
the three species mentioned in the top of the list on p. 15. For several
species this dense surfaceforming is less evident. For the dog-rose,
Rosa dumalis and R. canina and for elder, the ability in shaping of
surfaces does not occur.
Grazing by animals (cattle, deer, horses, sheep, goats) results in
forming dense surfaces of (a part of) the crown of blackthorn and
hawthorn similar to surface-shaping by wind. In contrast, cattle- or
deer-grazed dog rose and elder are very uneven and full of holes. No
species in this country is resistant to animal-grazing; goats especially,
kan keep out alle woody vegetation.
Traffic by heavy animals and human beings will crowd out heather
and crowberry.