This study is a part of the monitoring program of protective treatments in forest ecosystems of the Karkonosze National Park concerning mites from the order Gamasida. In character it is basically connected with the fauna and its objective was to determine mites in selected areas in the tree stands of the lower and upper subalpine forests. On the basis of the obtained results a preliminary comparative analysis was conducted concerning the size of the population and species composition of mites depending on the site and date of collection, as well as the altitude. The aim is to constitute in the future the basis for the analysis and determination of changes in the Karkonosze Mountains.

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