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Caring for the biodiversity of mountain forest

Preservation of native biodiversity is essential for the Krkonoše woodlands to restore stability with success. The purpose of the main biodiversity management tool is to save natural and semi-natural ecosystems and alter the composition of other stands to return them to a close-to-nature condition. Therefore, it is necessary to reduce spruce whilst increasing the proportion of broad-leaf trees including elm, lime, sweet cherry, etc., but also fir. The gene pool of rare woody species, e.g. Sudetic rowan (Sorbus sudetica), European bird cherry (Prunus padus borealis), some species of willow, and so on, is managed by the gene bank of KRNAP Administration in Vrchlabí, which also carries out field planting to restore populations of these plants in some threatened localities. Preserving the genetic variation of forest woody plants in the event of a critical threat to their sub-populations is conducted using vegetative methods, e.g. saving Krkonoše's local endemic form of Norway spruce via cutting and crossbreeding procedures. Gene bases and parental plantations are founded in mountain woodlands to save selected ecotypes of local woody plants, with particular attention being paid to species-rich botanical sites in the forest.

Measures include those being implemented to support biodiversity of animal life, for instance, hollow trees and trunk breaks with splinters are left to provide suitable nesting opportunities for birds and shelters for bats, even in forest stands within Zone 3 and the buffer zone of the national park. Furthermore, nesting boxes for birds are put up, and the preference is to carry out such work at locations with the occurrence of ground-nesting birds outside the breeding season. In addition, populations of native ant species considered at risk are protected and stabilised as part of Action Formica, and so on.

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