scholarly journals On the occurrence of web-spinning sawflies of the genus Cephalcia (Hymenoptera, Pamphiliidae) in the Czech Republic

2008 ◽  
Vol 53 (Special Issue) ◽  
pp. 57-62 ◽  
Author(s):  
J. Holuša ◽  
J. Liška ◽  
R. Modlinger ◽  
A. Véle
Keyword(s):  
Czech Republic ◽  
Sex Ratio ◽  
Central Europe ◽  
Environmental Variables ◽  
Mountain Forests ◽  
Mountain Regions ◽  
The Czech Republic ◽  
Clear Preference ◽  
Wide Range ◽  
Malaise Traps

In total, 55,862 specimens of seven species of the genus <I>Cephalcia (C. abietis, C. arvensis, C. alashanica, C. alpina, C. annulicornis, C. erythrogaster, C. masuttii</I>) were collected using Malaise traps in spruce mountain forests from 2001 to 2006. Sex ratio was male biased as a result of used methods; males are more active and quicker. The flight activity started in the studied localities at the beginning of May or the beginning of June depending on the actual weather. <I>C. alpina</I> flew first, followed by <I>C. erythrogaster</I> and <I>C. arvensis</I>, the last flying species were <I>C. alashanica</I> and <I>C. abietis. C. abietis</I> was the most abundant in all localities within all years (total dominance of 93%). <I>C. arvensis, C. alashanic</I> and C. alpina</I> were collected in more than hundred of specimens while <I>C. annulicornis, C. erythrogaster</I> and <I>C. masuttii</I> were collected only occasionally. Environmental variables were tested with the RDA model which proved several of them (years of 2001–2003, 2006, Český les and Slavkovský les) as significant. This is probably a result of following facts: (<I>i</I>) web-spinning sawflies occur throughout the whole range of spruce in Central Europe (therefore only two mountain regions were significant, but no species is positively correlated with them); (<I>ii</I>) <I>C. abie- tis</I> expanded in the Krkonoše Mts. in 2003 and 2006; (<I>iii</I>) <I>C. alashanica, C. alpina, C. annulicornis, C. erythrogaster</I> were more abundant in 2002; (<I>i</I>v) abundances of all species were very low in 2000. The factor of management was not significant, although samples from cultural forests prevailed and <I>C. abietis</I> was the most abundant in the cultural forests. <I>Cephalcia</I> species occur in a wide range of altitudes without any clear preference therefore this variable was not significant neither.

scholarly journals Predicted climate change will increase the truffle cultivation potential in central Europe

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Tomáš Čejka ◽  
Miroslav Trnka ◽  
Paul J. Krusic ◽  
Ulrich Stobbe ◽  
Daniel Oliach ◽  
...  
Keyword(s):  
Climate Change ◽  
Czech Republic ◽  
Central Europe ◽  
Agricultural Land ◽  
Economic Benefits ◽  
The Czech Republic ◽  
Truffle Cultivation ◽  
Ecological Requirements ◽  
Wide Range ◽  
Future Warming

AbstractClimate change affects the distribution of many species, including Burgundy and Périgord truffles in central and southern Europe, respectively. The cultivation potential of these high-prized cash crops under future warming, however, remains highly uncertain. Here we perform a literature review to define the ecological requirements for the growth of both truffle species. This information is used to develop niche models, and to estimate their cultivation potential in the Czech Republic under current (2020) and future (2050) climate conditions. The Burgundy truffle is already highly suitable for cultivation on ~ 14% of agricultural land in the Czech Republic (8486 km2), whereas only ~ 8% of the warmest part of southern Moravia are currently characterised by a low suitability for Périgord truffles (6418 km2). Though rising temperatures under RCP8.5 will reduce the highly suitable cultivation areas by 7%, the 250 km2 (3%) expansion under low-emission scenarios will stimulate Burgundy truffles to benefit from future warming. Doubling the moderate and expanding the highly suitable land by 352 km2 in 2050, the overall cultivation potential for Périgord truffles will rise substantially. Our findings suggest that Burgundy and Périgord truffles could become important high-value crops for many regions in central Europe with alkaline soils. Although associated with uncertainty, long-term investments in truffle cultivation could generate a wide range of ecological and economic benefits.

scholarly journals e-Learning trends in Central Europe: The case of the Czech Republic

2013 ◽  
pp. 375-387
Keyword(s):  
Czech Republic ◽  
Information And Communication Technologies ◽  
Central Europe ◽  
Learning Strategy ◽  
National Level ◽  
The Czech Republic ◽  
Starting Point ◽  
Wide Range ◽  
Information And Communication ◽  
E Learning

The paper deals with expert predictions on the development of e-learning in the Czech Republic, a country in Central Europe. The first part of the paper describes the development of e-learning with specific feature in the Czech Republic in relation to the implementation of Information and communication technologies (ICT) to schools and the business sector. The second part of the paper presents a survey with selected experts, conducted in the years 2012 and 2013 in the Czech Republic, aiming at identifying the trends of e-learning. Special attention is paid to applying e-learning in the corporate sector. Our survey provides a better understanding of the current and future trends of e-learning to a wide range of stakeholders interested in using e-learning. Understanding the existing and future state of e-learning should be a starting point for further development of any e-learning strategy, in both education and corporate sectors. Therefore, the findings of our survey have important practical implications. The survey also proves that identification of the e-learning trends at the national level is influenced by political, economic, social and technological factors.

The effect of environmental variables on owl distribution in Central Europe: A case study from the Czech Republic

2021 ◽  
pp. 101375
Author(s):  
Richard Ševčík ◽  
Jan Riegert ◽  
Karel Šťastný ◽  
Jan Zárybnický ◽  
Markéta Zárybnická
Keyword(s):  
Czech Republic ◽  
Central Europe ◽  
Environmental Variables ◽  
The Czech Republic

Young Scholars Conference “Slavic World: Commonality and Diversity”. 21–22 May 2019. Session “Linguistics”

2019 ◽  
Vol 14 (1-2) ◽  
pp. 295-297
Author(s):  
Sergej A. Borisov
Keyword(s):  
Czech Republic ◽  
Middle Ages ◽  
The Czech Republic ◽  
International Context ◽  
Slavic Languages ◽  
Russian Academy Of Sciences ◽  
Current State ◽  
Wide Range ◽  
History Of ◽  
Academy Of Sciences

For more than twenty years, the Institute of Slavic Studies of the Russian Academy of Sciences celebrates the Day of Slavic Writing and Culture with a traditional scholarly conference.”. Since 2014, it has been held in the young scholars’ format. In 2019, participants from Moscow, St. Petersburg, Kazan, Togliatti, Tyumen, Yekaterinburg, and Rostov-on-Don, as well as Slovakia, the Czech Republic, Hungary, and Romania continued this tradition. A wide range of problems related to the history of the Slavic peoples from the Middle Ages to the present time in the national, regional and international context were discussed again. Participants talked about the typology of Slavic languages and dialects, linguo-geography, socio- and ethnolinguistics, analyzed formation, development, current state, and prospects of Slavic literatures, etc.

scholarly journals The Climatology of Significant Tornadoes in the Czech Republic

Atmosphere ◽  
2020 ◽  
Vol 11 (7) ◽  
pp. 689
Author(s):  
Rudolf Brázdil ◽  
Kateřina Chromá ◽  
Tomáš Púčik ◽  
Zbyněk Černoch ◽  
Petr Dobrovolný ◽  
...  
Keyword(s):  
Czech Republic ◽  
Daily Variation ◽  
Convective Available Potential Energy ◽  
Vertical Wind Shear ◽  
Severe Damage ◽  
The Czech Republic ◽  
Annual Variations ◽  
Wide Range ◽  
Individual Trees ◽  
Common Era

In the Czech Republic, tornadoes may reach an intensity of F2 and F3 on the Fujita scale, causing “considerable” to “severe” damage. Documentary evidence is sufficient to allow the creation of a chronology of such events, from the earliest recorded occurrence in 1119 CE (Common Era) to 2019, including a total of 108 proven or probable significant tornadoes on 90 separate days. Since only 11 significant tornadoes were documented before 1800, this basic analysis centers around the 1811–2019 period, during which 97 tornadoes were recorded. Their frequency of occurrence was at its highest in the 1921–1930, 1931–1940, and 2001–2010 decades. In terms of annual variations, they took place most frequently in July, June, and August (in order of frequency), while daily variation favored the afternoon and early evening hours. Conservative estimates of human casualties mention 8 fatalities and over 95 people injured. The most frequent types of damage were related to buildings, individual trees, and forests. Tornadoes of F2–F3 intensity were particularly associated with synoptic types characterized by airflow from the western quadrant together with troughs of low pressure extending or advancing over central Europe. Based on parameters calculated from the ERA-5 re-analysis for the period of 1979–2018, most of these tornadoes occurred over a wide range of Convective Available Potential Energy (CAPE) values and moderate-to-strong vertical wind shear. The discussion herein also addresses uncertainties in tornado selection from documentary data, the broader context of Czech significant tornadoes, and the environmental conditions surrounding their origins.

Transitional Justice and Changing Memories of the Past in Central Europe

2013 ◽  
Vol 50 (1) ◽  
pp. 24-44
Author(s):  
Roman David
Keyword(s):  
Czech Republic ◽  
Central Europe ◽  
Transitional Justice ◽  
The Czech Republic ◽  
Divided Societies ◽  
The Past ◽  
The Impact

Memories of wrongdoings are often viewed as an obstacle to reconciliation in divided societies. Is it due to the past or the present politics of the past? To examine the dilemma of essentialism versus presentism, this article investigates the impact of transitional justice on memories of wrongdoing. It theorizes that using different transitional justice strategies to deal with the same wrongdoing shapes memories in different ways. The theory is tested via vignette-based surveys in the Czech Republic, Hungary and Poland, which adopted distinct lustration laws. The results show that wrongdoing is viewed through lustration laws, reflecting present power constellations, not history.

scholarly journals The impact of the air temperature on measuring the zenith angle during the year in the ground layer of the atmosphere for the needs of engineering surveying

2021 ◽  
Vol 61 (3) ◽  
pp. 476-488
Author(s):  
Tomáš Suk ◽  
Martin Štroner
Keyword(s):  
Czech Republic ◽  
Numerical Model ◽  
Central Europe ◽  
Air Temperature ◽  
Zenith Angle ◽  
Geographical Area ◽  
Temperature Gradients ◽  
The Czech Republic ◽  
Different Seasons ◽  
The Impact

This paper presents the results of over a year-long experiment dealing with a temperature measurement to calculate the theoretical effect of the atmosphere on the measured zenith angle in engineering surveying. The measurements were performed to determine the accurate and specific temperatures (temperature gradients), which can be recorded in different seasons in the low level of the atmosphere (up to 2 m above the ground, where most Engineering Surveying measurements take place) for the geographical area of Central Europe - specifically the Czech Republic. A numerical model was then applied to the resulting determined temperature gradients to calculate the path of the beam passing through an inhomogeneous atmosphere. From these values, the apparent vertical shifts caused by refraction in a given environment and time were finally determined.

scholarly journals A new specimen of Araucaria fricii from the early Coniacian of the Bohemian Massif, Central Europe

2021 ◽  
Vol 77 (2) ◽  
pp. 282-286
Author(s):  
Jiří Kvaček
Keyword(s):  
Czech Republic ◽  
Central Europe ◽  
Bohemian Massif ◽  
Type Material ◽  
Massif Central ◽  
The Czech Republic ◽  
First Occurrence ◽  
Bohemian Cretaceous Basin ◽  
Cone Scale

A specimen of Araucaria fricii is described from the upper part of the Teplice Formation in the Bohemian Cretaceous Basin. It extends the first occurrence of A. fricii from the mid-Coniacian back to the early Coniacian. Found in the Radovesice locality near Kučlín in the northern part of the Czech Republic, it is characterised by a deltoid cone scale complex with a centrally placed seed. It is compared to the type material of A. fricii from the mid-Coniacian Březno Formation and other European Cretaceous species of Araucaria. The taphonomy and palaeoecology of A. fricii is briefly discussed.

scholarly journals Notes to distribution and seasonal activity of spruce diprionids (Hymenoptera: Diprionidae) in the eastern part of the Czech Republic

2012 ◽  
Vol 50 (No. 12) ◽  
pp. 579-585 ◽  
Author(s):  
J. Holuša ◽  
L. Roller
Keyword(s):  
Czech Republic ◽  
Bark Beetle ◽  
Seasonal Activity ◽  
The Czech Republic ◽  
Emergence Trap ◽  
Baited Traps ◽  
Malaise Traps

A study of diprionids associated with spruce was done at 31 sites of the eastern part of the Czech Republic in 1988&ndash;2003. In total 45 specimens belonging to Gilpinia abieticola (6 specimens), G. hercyniae (3) and G. polytoma (36) were collected using Malaise traps, emergency traps, bark-beetle pheromone baited traps or sweeping. The spruce diprionids were recorded in 30% of the studied sites only. G. polytoma was the most abundant and it is probably bivoltine with adult activity from April to August. The results of emergence trap-monitoring in Paskovsk&yacute; les indicate that this species is in latency.

Sign in / Sign up

Export Citation Format

Share Document