Znaczenie leszczyny w formowaniu struktury glebowych zgrupowań skoczogonków w lasach grądowych Wigierskiego Parku Narodowego

A comparative analysis of the taxonomic and ecological structure of collembolan assemblages in the subcontinental oak-hornbeam forests of the Wigierski National Park with different projective coverages of hazel was carried out. The obtained results indicated that the fauna of the Collembola in the studied forests of the Wigierski NP is represented by 51 species belonging to 31 genera and 11 families. The fewest species were recorded in the areas without hazel, and the most were recorded with its participation. The obtained data indicate that the absence of hazel or its small presence leads to a decrease in the species richness of Collembola assemblages. On the other hand, the presence of hazel in the experimental plots of the oak-hornbeam forest allows more species of Collembola to survive both at the level of point and coenotic alpha-diversity richness according to P. Whittaker. This may indicate that in the studied forest communities with a significant presence of hazel, the capacity of the environment for Collembola increases, compared to those where hazel is absent or represented by a small number of woody shrubs. However, the detected changes in the studied taxocenes are insignificant and relate mainly to indicators of inventory species richness according to P. Whittaker, as well as the numerical ratio of species.