M. Holecova, SEASONAL DYNAMICS OF WEEVIL COMMUNITIES (COLEOPTERA, CURCULIONIDAE) IN LEAF BEARING CROWNS OF ALNUS-GLUTINOSA (L), BIOLOGIA, 48(2), 1993, pp. 211-216
The author focuses on the study of crown stratocoenoses dynamics in Al
nus glutinosa in Little Carpathians (SW Slovakia). Together with willo
ws (Salix fragilis and S. caprea) this tree species is most chracteris
tic of the plant communities on brook alluvia. The material was collec
ted by a beating tray of 1 m in diameter (1 quantitative sample = beat
ing from 25 branches) at regular 2-week intervals during three vegetat
ion periods on four study areas. In additon to the abundance dynamics
also changes in species number, diversity, eveness and dominance index
of the weevil communities have been investigated. Special attention h
as been paid to the seasonal changes in representation of the topic an
d trophic groups of weevil adults in the individual months of the vege
tation period.