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Influence of vertebrates on recovery spruce and rowan growth in natural spruce forest of Krkonoše
SÍČOVÁ, Petra
Animal influence has in wood ecosystem big importace. Previously responded amount of animals to population curves of big beasts of prey. Since the time, when man started to regulate animals, he has to database, how big is each population and which density of animals is optimal according to local conditions. The aim of my work was to find out the influence of vertebrates on recovery and growth of Sorbus aucuparia and Picea abies. The research, I have been doing during growing season of the year 2007, contained field work on four LRA and one transect in Krkonoše. Work involved monitoring movement notes of vertebrates, schematic layouts of tree rings of experimental nurslings of spruce and measuring seeding of rowan. Counting, layouts and measurings were processed into schedules and consequently analysed. It was found, that amount of deer animals is raising and its influence on recovery is therefore more significant. Damage, which was found out on plants of spruce has raised since year 2000. Results has shown, that the slight browsing has increased by 10% compared to year 2000. Big effect on rowan recovery has instead of other also altitude which is connected with climatic conditios. By reason of raising deer animals in the area of Krkonoše national park and necessity its regulation, further monitoring of vertebrate influence on wood ecosystem is recomended.
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