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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Communities of epigeic beetles in the plantations of fast growing plant species for energetic purposes and in surrounding biotopes
 JAHNOVÁ, Zuzana
The aim of the work was to study the communities of epigeic beetles in plantations of energetic plants (Dactylis glomerata, Arrhenatherum elatius, Phalaris arundinacea, Helianthus tuberosus) and in surrounding lawn biotope. The method of pitfall trapping was used for beetle sampling from 2008 to 2010 during the growing season. Carabid beetles (Carabidae) and rove beetles (Staphylinidae) were used as bioindicators. In total 69 species and 1789 individuals were captured and evaluated. Eurytopic species were more common than stenotopic in all habitats, also the value of the index of beetle communities was low in all plots. RDA analysis proved the influence of surrounding biotope on beetle communities. It was concluded that communities of epigeic beetles might be also affected by the climatic factors, long termed population fluctuations of individual species, edge effect and microclimate inside the vegetation.
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Occurence and density of corncrake (Crex crex) in selected parts of National Park Šumava in relation to biotope management
 PEKSA, Martin
The abundance of males of corncrake (Crex crex) in dependence on its biotope management was studied in the west part of the Šumava National Park. A night counting of singing males of corncrake by the method of point transect was practised. A record of male territorial vocalization was used. The research last from 9th June 2008 to 8th July 2008 in the extent of 598,3 hectare and in the average altitude of 877,7 metres above sea-level. Sixty-two males of corncrake was found out in total. The average population density was 0,07 ex./ha. Among 39 monitored localities there were 53,9 % of perennial biomass crops, 23,8 % of localities without management, 11,9 % of grasslands and 10,5 % of localities where the management according to the agroenvironmental programme is practised. It was acknowledged a positive influence of localities where the management according to the agroenvironmental programme is practised on corncrakes occurrence. In spite of the procentual representation of these localities being the smallest the average occurrence of corncrake there is the largest. It appears from these results that the agroenvironmental programme called "Bird localities on biomass crops - the breeding place of corncrake" is beneficial.
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