Fenološka ocena pojavljanja imagov štirih vrst varstveno pomembnih saproksilnih hroščev v Sloveniji: Lucanus cervus, Cerambyx cerdo, Rosalia alpina, Morinus funereus (Coleoptera: Lucanidae, Cerambycidae)
Phenological estimation of imagos occurrence in four saproxylic beetle species of conservation importance in Slovenia: Lucanus cervus, Cerambyx cerdo, Rosalia alpina, Morinus funereus (Coleoptera: Lucanidae, Cerambycidae)

slovenian

2008

volume 16, issue 2

Prirodoslovni muzej Slovenije

Although saproxylic beetles are among the most endangered beetle species in Europe, they are still poorly known in Slovenia. The aim of this contribution was to estimate the time of occurrence of imagos in four saproxylic beetles ofconservation importance in Slovenia, to estimate peak of activity, and to give recommendations for periods in which censuses should be conducted. The analysis of non-systematically collected data of findings and observations in Slovenia was applied. In three species, Lucanus cervus, Rosalia alpina and Morinus funereus, there was enough data to follow changes in phenology in the period between 1900 and 2007. It seemed that changes were significant in species eclosing later in the year (summer species - L. cervus, R. alpina), but not in earlier eclosing (spring) species, i.e. M. funereus. Considering the species phenology and their changes recorded in 20th century the optimal period for conducting censuses in Slovenia is given: for L. cervus end of Juneand the first half of July, C. cerdo June, R. alpina second half of July and M. funereus second half of May and June. A question about the influence ofglobal warming on the phenology of beetles in Slovenia emerges, although this preliminary study, due to low amount of considered species, cannot give proper answers.

18.08.2010