Beaver spread to Slovenia in 1998. Several beaver familys are now established on Krka, Drava, Dobličica, Mura and Radulja river. Considerable further range expansion can be expected. Researh was carried out in summer of 2008 on Radulja, Krka and Drava river. We analysed the number of damaged woody vegetation as well as the presence of certain plant species. We also mesured the distance of trees and shrubs from the river bank, the hight of damage sites and the diameter below the damage sites. The most frequently damaged specie was white willow (Salix alba) and trembling popler (Populus tremula). The hight of damage was not more then 1 m above ground and the average diameter at the site of the damage range from 25-42 cm. Damaged trees and shrubs were recorded in a distance of 15 m from the river bank. We also noticed an intenst growth of shoots in white willow and trembling popler. We evaluated habitats on Krka, Radulja and Drava river in four categorys: water, banks, vegetation and management. The habitat on river Drava was the most suitable habitat. All three habitats were poorly avaluated in the managament category. Beaver caused certain damage on tress and fields. With the wright set of mitigation it is posibile to reduce conflicts in beaver habitats. Stream Dobličica, Krakovo forest and river Krka are included in Natura 2000 pSCI areas and are important for beaver and many other species. The area of Mura and Drava river are overgrown with riparian forests of willow, ash and alder trees which were included in Natura 2000 as an inportant forest habitat typ (91E0*). With preservation of water ecosystems and riparian forest of Drava and Mura river we simultaniosly protect the beaver habitat. Foresters can play an important role in prevention of beaver damage and help beaver withhis settlement. Foresters can also play an important role in public relations as beaver's messengers .
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