National Repository of Grey Literature 7 records found  Search took 0.01 seconds. 
Diversity and phylogeny of the lacertid lizards (Lacertidae) with emphasis on the tribe Eremiadini
Hlaváč, Denis ; Šmíd, Jiří (advisor) ; Chmelař, Jan (referee)
The family Lacertidae (lizards) belongs to the class Reptilia (reptiles) and the order Squamata (scaly reptiles). This family consists of two subfamilies, Lacertinae and Gallotinae, which are diversified into 45 genera and approximately 368 species. The subfamily Lacertinae is divided into two tribes, namely the tribus Eremiadini and Lacertini. The tribe Lacertini can be further divided into two clades: the Ethiopian and the Saharan-Eurasian clade. The subfamily Lacertinae, with approximately 354 species, is much larger than the subfamily Gallotinae, which consists of only 14 species. From the subfamily Lacertinae, the larger tribus Eremiadini is formed by 215 species classified in 22 genera. Representatives of this family can be found in Europe, Africa and Asia, but the center of origin is Europe. They belong to the dominant species of herpetofauna in Europe. The Eremiadini tribe separated from the rest of the Lacertidae family in the past and migrated to Africa, where it diversified into its present form. Currently, the diversity of the Eremiadini tribe is concentrated in Africa, but a large number of species also occur in Asia. The body is small to medium in size, which usually does not exceed 90 mm without the tail. The body shape is slender and the tail is relatively long compared to the body...
Ecology,ethology and variability of european green lizard Lacerta viridis in Natural reservation Tiché údolí
Chmelař, Jan ; Rehák, Ivan (advisor) ; Moravec, Jiří (referee)
The european green lizard, Lacerta viridis is a critically endangered reptile species which is in the region of Bohemia present only in relict isolated populations. These populations are closely linked to slopes with a southern exposition in deeply engorged river valleys. These valleys exhibit a unique climatic effect also known as the river phenomenon which allows numerous animal and plant species to survive far beyond their standard northern range. The chosen locality in Tiché údolí is a subject to long-term conservational management and the studied lizard population seems to reflect its effectiveness. This study is aimed to evaluate variability, ecological and ethological characteristics of lizards within the locality and is focused on changes on the population level. Key words: European green lizard, Lacerta viridis, Tiché údolí, river phenomenon, variability, ecology, ethology, population characteristics Abstrakt Ještěrka zelená, Lacerta viridis, je kriticky ohrožený druh plaza, který se na území Čech vyskytuje pouze v reliktních a izolovaných populacích. Ty jsou úzce spjaty se svahy v hluboko zaříznutých říčních údolích. Tato údolí vykazují unikátní klimatický efekt, známý též jako říční fenomén, který umožňuje výskyt četných živočišných i rostlinných druhů i za severní hranicí jejich běžného...
Territoriality in lizards
Chmelař, Jan ; Rehák, Ivan (advisor) ; Veselý, Milan (referee)
Territoriality in lizads Jan Chmelař Abstract : Territoriality is a widely discussed phenomenon occuring among all groups of vertebrates on intraspecific level. Nevertheless, lizards occupy a prominent position due to a nearly endless variability in forms of territorial behaviour on the levels of higher taxons, species, populations and individuals. Examples could be systems of social dominance hierarchy, female territoriality or interspecific territoriality. Importance of territoriality is obvious as a way of reproduction control and exclusive usage of space and resources and has a positive impact on individuals that are able to defend their territories. On the other hand, there is a higher exposure to predators and a cost in a form of depleted energy. One other thing is that it sometimes complicates efforts of conservational biologists by lowering genetic variability inside populations of endangered species. Key words: territoriality, social dominance, lizards, home range
Ecology,ethology and variability of european green lizard Lacerta viridis in Natural reservation Tiché údolí
Chmelař, Jan ; Rehák, Ivan (advisor) ; Moravec, Jiří (referee)
The European green lizard, Lacerta viridis, is in the Bohemia region stated as critically endangered species. Populations in this region are located beyond the northern border of continuous range of this species and are closely related to the "riverine phenomenon", and deeply engorged river valleys. The chosen locality in Tiché údolí is a subject to a long-term conservational management aimed to strengthen and maintain abundance of the local population. This management is a direct output of a previous study of this population performed in years 1995-1997. Main goal of the presented study is to compare current population characteristics with the older study. The locality has been visited 119 times in years from 2011 to 2014. The studied population now displays higher abundance and inhabits a larger area. The author also performed a spatial analysis of the places with presence of an observed individual in order to determine and evaluate significance of the chosen abiotic factors for habitat discrimination. The results indicate that positive discrimination is based on the presence of a rock debris and a hiding place. Strongest factors towards negative discrimination were high percentages of grass and high vegetation coverage. This study also contains and discusses ecological, ethological and...
Ecology,ethology and variability of european green lizard Lacerta viridis in Natural reservation Tiché údolí
Chmelař, Jan ; Rehák, Ivan (advisor) ; Moravec, Jiří (referee)
The european green lizard, Lacerta viridis is a critically endangered reptile species which is in the region of Bohemia present only in relict isolated populations. These populations are closely linked to slopes with a southern exposition in deeply engorged river valleys. These valleys exhibit a unique climatic effect also known as the river phenomenon which allows numerous animal and plant species to survive far beyond their standard northern range. The chosen locality in Tiché údolí is a subject to long-term conservational management and the studied lizard population seems to reflect its effectiveness. This study is aimed to evaluate variability, ecological and ethological characteristics of lizards within the locality and is focused on changes on the population level. Key words: European green lizard, Lacerta viridis, Tiché údolí, river phenomenon, variability, ecology, ethology, population characteristics Abstrakt Ještěrka zelená, Lacerta viridis, je kriticky ohrožený druh plaza, který se na území Čech vyskytuje pouze v reliktních a izolovaných populacích. Ty jsou úzce spjaty se svahy v hluboko zaříznutých říčních údolích. Tato údolí vykazují unikátní klimatický efekt, známý též jako říční fenomén, který umožňuje výskyt četných živočišných i rostlinných druhů i za severní hranicí jejich běžného...
Territoriality in lizards
Chmelař, Jan ; Rehák, Ivan (advisor) ; Veselý, Milan (referee)
Territoriality in lizads Jan Chmelař Abstract : Territoriality is a widely discussed phenomenon occuring among all groups of vertebrates on intraspecific level. Nevertheless, lizards occupy a prominent position due to a nearly endless variability in forms of territorial behaviour on the levels of higher taxons, species, populations and individuals. Examples could be systems of social dominance hierarchy, female territoriality or interspecific territoriality. Importance of territoriality is obvious as a way of reproduction control and exclusive usage of space and resources and has a positive impact on individuals that are able to defend their territories. On the other hand, there is a higher exposure to predators and a cost in a form of depleted energy. One other thing is that it sometimes complicates efforts of conservational biologists by lowering genetic variability inside populations of endangered species. Key words: territoriality, social dominance, lizards, home range
Gamification in Teaching
Chmelař, Jan ; Jiřinová, Kateřina (advisor) ; Procházka, David Anthony (referee)
This thesis focuses on the topic of gamification and searches for options of using gamification to improve student experience in the Principles of Management course at University of Economics, Prague. The thesis formally defines gamification and identifies the theory of motivation and game design as two key paradigms in the topic. The practical part uses the apparatus of managerial decision making to choose a suitable variant for implementing gamification elements the self-management activity 30 Days Challenge. The application Habitica is identified as a suitable solution.

See also: similar author names
4 CHMELAŘ, Jindřich
1 CHMELAŘ, Josef
4 Chmelař, Jakub
2 Chmelař, Jaroslav
4 Chmelař, Jindřich
10 Chmelař, Jiří
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