Jaroslav Holuša

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Xylariaceous endophytes are commonly encountered in plants, and it has recently been found out that insect vectors play a major role in their life cycle, as well as in the apparent host-specificity of the fungal stromata. In this study, a new insect-associated, endophytic anamorph species of Daldinia is recognised from a comparison of a) morphological and(More)
The northwestern distributions of several steppe species of Orthoptera extend to the southeastern part of the Czech Republic (Pannonia) and occupy more or less isolated fragments of optimal habitats. Their distributional limits are not conditioned by macroclimate in most cases but reflect landscape development (physical structure, plant community type and(More)
According to the International Union for the Conservation of Nature, taxa extinct within a region but extant in other parts of the world should be classified as Regionally Extinct (RE). A taxon is designated RE when there is no reasonable doubt that the last individual capable of reproduction within a region has died or disappeared. A taxon can also be(More)
The bush cricket Saga pedo is a critically endangered species in the EU and is included in Annex IV of Council Directive 92/43/EEC. This species is therefore subject to mandatory regular monitoring within all member countries where it occurs. Because its abundance is low and little information is available concerning its ecology, however, an effective(More)
Orchards on slopes with southern exposure and calcareous substrates are typical of the thermophyticum area of the Bohemian Basin. Because these slopes have long been maintained by mowing, they support semi-natural dry grassland stands and scrublands. These slopes are no longer mowed, however, and recently have become overgrown with grasses and subsequently(More)
Ants are an important part of biodiversity and are useful bioindicators. Our aim was to determine whether ant species richness and composition differ among large clear-cuts (ca. 3000 m2), small forest gaps (ca. 400 m2), and areas of mature forest. The research was conducted in a large plantation of Picea abies in the Jizerske Mountains in the Czech Republic(More)
Two methods were compared for capturing the bark beetle Ips duplicatus Sahlberg (Coleoptera: Curculionidae, Scolytinae): lure-baited, insecticide-treated tripod trap logs (TRIPODs) versus Theysohn pheromone traps (TPTs). In 2008 and 2011 and at each of three clearcuts, five TPTs and five TRIPODs baited with ID Ecolure pheromone evaporators were installed(More)
The gypsy moth is the most important defoliator of broadleaved forests in the Northern Hemisphere. We explored the patterns in the moth’s long-term dynamics and produced outbreak forecasts for seven countries located in central to southeastern Europe and extending into the Carpathian Mountains. We investigated how the outbreak periods and trends in the size(More)
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