scholarly journals Seasonal Dynamics and Winter Occurrence of Non-native Species – Mandarin Duck (Aix galericulata) in the Czech Republic

Author(s):  
Vladimír Mikule

The study aims to evaluate changes in occurrence of the Mandarin Duck, Aix galericulata (Linnaeus, 1758) in the Czech Republic in 2008–2019 with focus on winter months (December, January and February) 2007/08–2018/19. Seasonal dynamics of occurrence was evaluated for years 2008–2019 by comparison of 3831 observations. The highest number of observations comes from winter period (36.7%), if we exclude data from South Moravian Region (with whole year occurrence), it is 48%. In winters 2007/08–2018/19 occurrence of 772 birds was detected, most of them with determined gender – 469 males (63.4%) and 271 females (36.6%). In winter periods 2007/08–2010/11 the occurrence was concentrated in the Central Bohemian Region (Vltava river). Since the winter 2011/12 the centre of occurrence was in the South Moravian Region which is related with a formation of stable breeding population in that region. Pattern of the highest number of observations in a winter period lasts but the highest numbers of observed birds are possibly of the Czech origin.

Kontakt ◽  
2011 ◽  
Vol 13 (4) ◽  
pp. 404-411
Author(s):  
Milan Hanzl ◽  
Radka Pudíková

Author(s):  
Jaroslav Škrabal ◽  
Petra Chmielová

The aim of the article is to make a comparison of brownfields in the South Moravian, Olomouc, Zlín and Moravian-Silesian regions based on the spatial standpoint. Data on brownfields were obtained through the National Database of Brownfields, which is managed by the CzechInvest agency. Information about these abandoned buildings and grounds were dated on 31st March 2021. The finding of the contribution is the fact that the most abandoned buildings and areas are mainly in Moravian-Silesian and South Moravian Region. Most of brownfields are after industrial activities, civic amenities and agricultural activities. In the given article, the analysis of brownfields according to individual indicators was performed on the basis of spatial and geographical point of view. It was found that most of the examined abandoned buildings and areas are located mainly in cities, which were followed by municipalities. Furthermore, it was proved that the size of brownfields from 54% is in area up to 1 (ha). The following indicator was the distance of abandoned buildings and areas from the centre of the cadastral area. Based on the results, it was found that 45% of the analysed brownfields are located 1-3 km from the centre of the cadastral area.


2016 ◽  
Vol 61 (No. 8) ◽  
pp. 339-344
Author(s):  
T. Badal ◽  
J. Kšica ◽  
V. Vala ◽  
D. Šafařík

2010 ◽  
Vol 56 (No. 3) ◽  
pp. 85-91 ◽  
Author(s):  
Z. Strašil ◽  
J. Kára

This paper deals with the Reynoutria × bohemica and Reynoutria japonica under conditions of the Czech Republic. It evaluates the impact of soil, weather conditions and various terms of harvest (autumn, spring) on the yield, dry matter content, phytomass loss, ash content, and basic elements content change in plants. Heavy metals content was determined in soil where plants were grown and consequently in plants themselves. The average yield of dry matter at the fully closed stands of Reynoutria japonica were 9.06 t/ha in autumn, Reynoutria × bohemica from 13.23 to 21.41 t/ha, according to the site. The yield losses within the winter period were found on average 42% for Reynoutria japonica and 34% for Reynoutria × bohemica. The moisture decrease of Reynoutria japonica was found from 68% in the autumn to 24% in the spring, and of Reynoutria × bohemica from 67% to 23%, respectively. Decreased content of nitrogen, phosphorus, potassium, calcium, and magnesium in the knotweed phytomass was found during the latter (spring) harvest periods in comparison with the earlier harvest periods. Decreased elements content in phytomass during the latter harvest period (spring) increases the phytomass quality as a fuel from both aspects – technical and emissions generation. The ash content in plants varied according to the site, on average from 3.12% in Ruzyně to 4.6% in Chomutov. None of the heavy metals monitored in knotweed plants reached the maximum admissible values determined for the food or feed purposes in the Czech Republic. From the results of combustion experiments, it is evident that Reynoutria × bohemica is a good fuel. Energy sorrel shows the extreme CO concentration in flue gases in comparison with other monitored fuels. According to the ČSN EN 12809 (2001) standard it does not meet even the third class of requirements. On the contrary, knotweed and wood bark fulfill the requirements for the first class. The surprising fact is that both of these fuels show the lower level of CO emissions, than the wooden briquettes. Concentrations of nitrogen oxids are comparable with biofuels, except of wood, and probably are related to the nitrogen content in heating material.


2020 ◽  
Vol 8 (2) ◽  
pp. 914-931
Author(s):  
Petra Pártlová ◽  
Zuzana Dvořáková Líšková ◽  
Miroslav Felcan ◽  
Jarmila Straková ◽  
Jan Váchal ◽  
...  

2015 ◽  
Vol 45 ◽  
pp. 143-174
Author(s):  
Janusz Siatkowski

Slavic names of the ‘pupil’ (‘źrenica’) in the light of dialect materials and historic sourcesDespite a considerable mixture of names of “the pupil”, their collateral use and not quite distinct borders of ranges of specified lexemes, it is possible to specify several express, albeit not quite well-defined, areals (map 1).In Russia and in eastern regions of Belarus and Ukraine, the name *z//orčьkъ (// > d) dominates. In the areal of this name, it is possible to define the areal of a separate or collateral occurrence of names *Z//ьrъkъ, more rarely *z//irъkъ (Z > s, ž; // > v) southward and eastward from Moscow, names *ględělьce, *ględělьca and *ględělьcь in the vicinity of Pskov and Novgorod and *čьrnyšь, *čьrnyšьkъ and *čьrnyšьko in the north of Russia.In Poland and in the Czech Republic, *GЪpanьnъka (GЪ > ø) occur, besides, *zьrěnica also occurs in Poland.In Ukraine and in eastern Belarus, *čelověčьkъ dominates, while *čelověčьko is less numerous; in southern Bulgaria, Macedonia and in Slavic settlements on the territory of  Greece and Turkey the forms  *čELoVěčę, *čELověčьlę and *čELoVěčьčь (EL > ø; V > ø) dominate.In Serbia and Croatia and somewhat in Slovenia and south-western Bulgaria, the name *zěnica prevails.Map 2 (motivation map) shows most visibly two types: from the verbs meaning ‘patrzeć’ („to see”), which occur in the prevailing part of the Slavic territory, and from the words meaning persons and things that are reflected in „the pupil” (‘źrenica’) and are represented in western Ukraine and western Belarus, on the prevailing territory of Poland, in the Czech Republic and Moravia, in the south-eastern part of Slovakia and also in Macedonia, southern Bulgaria and in Slavic settlements on the territory of Greece and Turkey. Both of these types were registered as a certain mixed type, in particular, in eastern Ukraine and eastern Belarus.The names that are motivated by the black color of “the pupil” (‘źrenica’) are found mainly in northern russian and in southern Macedonian dialects; less frequently they appear in the territory of Austria and in Łużyce. Motivation types from the names meaning round, shining and luminous objects, and from the names that are diminutive names of the eye are very sporadic and occur in great dispersion.


2019 ◽  
pp. S243-S251 ◽  
Author(s):  
K. LINHARTOVÁ ◽  
K. BUDINSKAYA ◽  
J. SVAČINOVÁ ◽  
V. SVÍZELA ◽  
M. PROKEŠ ◽  
...  

Nutritional status, its assessment and its influence on numerous diseases is currently still being discussed. The aim of this study was to determine the current state of nutrition by various research methods in school children. Also, to verify the accuracy of body mass index (BMI) determination in school environment and to compare the nutritional status in two different types of school. We used a quantitative questionnaire method in 64 children from schools in the South Moravian Region. We have verified the weight and height measurement in the same group by sophisticated instruments. We have determined the basic parameters of the cardiovascular system (non-invasive continuously blood pressure recording; mutual spectral analysis for estimation of baroreflex sensitivity; applanation tonometry and cardiac polygraphy for arterial stiffness evaluation). The indicative questionnaire method encountered a problem with the weight of almost 40 % of the population approached – both obesity (14.3 %) and malnutrition (25.2 %). Cardiovascular parameters were in physiological range for the given age categories. We found increased values in BMI, % of body fat and heart rate in children from countryside type of school, respect-tively. We concluded that obesity/malnutrition are both common phenomena in the children population in the Czech Republic.


2021 ◽  
Vol 9 ◽  
Author(s):  
Petr Bogusch ◽  
Jozef Lukáš ◽  
Martin Šlachta ◽  
Jakub Straka ◽  
Peter Šima ◽  
...  

Colletes hederae Schmidt & Westrich, 1993 is a cryptic bee species from the C. succinctus species-group. The previous occurrence and spreading of this species were predominantly in south-western Europe. To determine if the species was spreading in Slovak territory, Hedera helix was monitored from autumn 2015. The ivy-bee was first recorded in Slovakia during autumn 2017. This species is widespread inside and around Bratislava; however, it was not recorded under this study in any sites located eastwards. In the Czech Republic, it was not recorded in the south-east part of the country in 2017–2019. In 2020, the occurrence of this species was confirmed in many localities in the south of the country and strong populations were discovered, especially in the towns Znojmo and Mikulov. The populations likely originated from neighbouring Austria, where this species was discovered in 2006 and the localities are usually less than 100 km away from Czech and Slovak localities. A further survey could map a route of the northwards spread of this species.


Diversity ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 410
Author(s):  
Jiří Patoka ◽  
Barbora Patoková

Ornamental aquaculture is one of the main sources of non-native species worldwide. Unintentionally transported “hitchhiking” organisms have been previously recorded; although most of these species are transported from tropical regions, here we report on the first accidental transport of the zebra mussel (Dreissena polymorpha) in a shipment of ornamental Aegagropila linnaei (Chlorophyta) from Russia to the Czech Republic. This invasive mussel is listed on the national blacklist of alien species in the Czech Republic and can be easily released in outdoor garden ponds together with A. linnaei. Since the Czech Republic is known to be a gateway for aquatic ornamental species from a European perspective, re-export to other European countries is also possible. Thus, the spread of D. polymorpha via this pathway cannot be excluded. This finding should be of importance to conservationists, traders, decision-makers and other stakeholders.


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