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The effect of environment and species dispersal limitations may both significantly affect the structure of ecological metacommunities but there have been a relatively few attempts to separate their effects in aquatic assemblages. In this paper, we tested the relative importance of environment and space on the ostracod assemblages on a regional scale(More)
The aim of the present study was to estimate the extent to which macroinvertebrate assemblages in a headwater stream are determined by environmental conditions and temporal dynamics. Six mesohabitats defined by substratum were sampled monthly throughout one year, environmental conditions at each sampling point being precisely described. Environmental(More)
The diversity of spring habitats can be determined not only by local environmental conditions, but also by large-scale biogeographical effects. The effects can differ across various groups of organisms. We compared α-, β- and γ-diversity patterns of bryophytes and vascular plants of (sub)alpine springs in three contrasting mountain ranges: Alps(More)
This article presents conceptual procedures of designing freeze-drying of protein rich fodders, such as fish and other seafood, and suggests a continuous method of freeze-drying in a freeze dryer with uniform processed product warm-up in any point of the chamber space. The substantiated freeze-drying mode includes product freezing at–30 to–50°C and drying(More)
Infection with Fascioloides magna (Digenea) causes serious damage to liver tissue in definitive hosts represented by ruminants, especially cervids. The distribution of F. magna includes the indigenous areas in North America, and the areas to which F. magna was introduced—Central Europe, Southeast Europe, and Italy. The North American intermediate host of F.(More)
An analysis is given of the process of mixing and heat treatment of solid and gas phases in a fluidized bed, which is being used successfully in mechanical engineering and chemical, oil refining, mining, power engineering, and other industries, for the purpose of mixing various ingredients of mixed animal feeds, including therapeutic and thermolabile. A(More)
A production line is proposed for micronization of fodder grain with a capacity up to 10 t/h, where superheated steam is used as a heat-transfer agent, the specific heat capacity of which is 4 times higher than that of air and thermal conductivity is 23 times higher. The combined effect of high temperature and pressure reduce manyfold the treatment time and(More)
The monitoring of currently changing bogs has triggered a need to improve our understanding of correlations between different taxa. We analysed the cross-taxon congruence of six contrasting groups of organisms (vascular plants, bryophytes, fungi, diatoms, desmids and testate amoebae) in permanent plots located in differently polluted summit ombrotrophic(More)
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