engleski

THE CONSEQUENCE OF DAMAGING THE BARK OF FOREST TREES BY BIG GAME

The large game species are generally residents of forest stands. Such a relation between wildlife and habitat inevitably leads to mutual influences. One of negative influences is barking (stripping bark). In natural regeneration of lowland forests it is custom, with the purpose of reducing damages from wildlife, before the beginning of regeneration to fence off the area to prevent big game entry. Thus preventing the undermining of young plants by wildboars and prevent the losses caused by the bud leaves and bud peaksbeing bitten by roe and deer. This enables the forest regeneration success and the young plants have come out of the phase when they are sensitive to undermining and when the bud peak has grown into bud zone. However at that time on young trees in areas with high density of deer damages occur from bark peeling. Although it is reliably known that damages occur from common deer, and is known that females peel bark in January and February, very little is known why this damages happen and what these damages mean for the future of young stands. Research surfaces have been placed in second age class of ash stands where intense bark damage has been noticed. Research has shown that damages that occur are mainly connected to ash trees. Wildlife avoids other species such as oak, alder, willow, indigo Busch, etc. Typically the bark damage starts at a phase when the bark is thin and can easily be bitten of and lasts until the trees transition to a diameter degree of 15 cm when the bark becomes too thick to chew off. In order to determine the consequences of damage to older trees> 50cm sectioning was performed in a manner that cross-sections were analysed every 25 cm height in the area of damage. Dendrochronological methods attempted to clarify the changes that occur after, and closing of wounds made by bark damage, and it was attempted to determine to which extent the decrease in technical value of damaged trees round wood happens.

big game; red deer; forest regeneration; ash; standing trees; damages

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