Results of the investigations of spatial and temporal differentiations of Apoidea in the forests of Wielkopolski National Park were presented. It was shown that the both forest floor differ with the degree of species differentiation and domination’s structure and total number of bees. In the herbaceous layer of the forests about twice as many spedes were found than in the crowns. Also the Shannon-Weaver’s indices for bees communities of the herbs layer are higher in all three investigated forest ecosystems. The curves of Apoidea numbers in tree crowns and forest floor were similar. The curves of Apoidea numbers in the deciduous forests have one peak in the first days of May. Whereas the curves of Apoidea numbers in the pine forest have multi peak course. It was proved that trees play an important role in feeding chain of bees inhabiting deciduous forests.
In deciduous and pine forests the effect of white, yellow and Ыие Moericke traps on numbers and sped es diversity of Apoidea was assessed. It was proven that the most useful in forest are white traps. They caught several times greater numbers of bees. The white traps caught also over 90% of all determined spedes while the yellow ones 56.4% and the blue traps only 31.6%.
PL
W lesie liściastym i sosnowym oceniono wpływ białych, żółtych i niebieskich pułapek Moerickego na liczebność i zróżnicowanie pozyskiwanych Apoidea. Wykazano, że najbardziej przydatne do odławiania Apoidea w lasach są pułapki białe. Stwierdzono kilkakrotnie wyższe liczebności pszczół odłowionych przez białe pułapki. Trafiło też do nich ponad 90% wszystkich stwierdzonych gatunków, podczas gdy do żółtych 56.4% i 31.6% do niebieskich.
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