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Acoustic communication and its variability in selected populations of ground squirrels of the genus Spermophilus
Schneiderová, Irena ; Vohralík, Vladimír (advisor) ; Sedláček, František (referee) ; Špinka, Marek (referee)
The thesis deals with vocalizations produced by Eurasian ground squirrels of the genus Spermophilus. It is mainly focused on inter-species and intra-species variability in acoustic structure of alarm calls which are emitted in presence of predators.The major part of the thesis deals with intra-species variability in acoustic structure of the alarm calls in five Eurasian ground squirrels, Spermophilus citellus, S. taurensis, S. xanthoprymnus, S. suslicus and S. fulvus. It has been confirmed that the alarm calls of these ground squirrels show a high level of species specificity. The thesis further describes another vocalizations produced by three Eurasian ground squirrel species, Spermophilus suslicus, S. citellus and S. fulvus, and shows that with the exception of the alarm calls, vocal repertoires of these three ground squirrels are remarkably similar. The last part of the thesis deals with individual distinctiveness of the alarm calls of three Eurasian ground squirrels, Spermophilus citellus, S. taurensis and S. xanthoprymnus. It has been shown that the alarm calls of these species have a significant potential to encode information about caller identity.
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Acoustic communication and its variability in selected populations of ground squirrels of the genus Spermophilus
Schneiderová, Irena
Acoustic communication and its variability in selected populations of ground squirrels of the genus Spermophilus (abstract) Irena Schneiderová; Department of Zoology, Faculty of Science, Charles University in Prague The thesis deals with vocalizations produced by Eurasian ground squirrels of the genus Spermophilus. It is mainly focused on inter-species and intra-species variability in acoustic structure of alarm calls which are emitted in presence of predators. The major part of the thesis deals with intra-species variability in acoustic structure of the alarm calls in five Eurasian ground squirrels, Spermophilus citellus, S. taurensis, S. xanthoprymnus, S. suslicus and S. fulvus. It has been confirmed that the alarm calls of these ground squirrels show a high level of species specificity. The thesis further describes another vocalizations produced by three Eurasian ground squirrel species, Spermophilus suslicus, S. citellus and S. fulvus., and shows that with the exception of the alarm calls, vocal repertoires of these three ground squirrels are remarkably similar. The last part of the thesis deals with individual distinctiveness of the alarm calls of three Eurasian ground squirrels, Spermophilus citellus, S. taurensis and S. xanthoprymnus. It has been shown that the alarm calls of these species have a...
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Possibilities to reduce the risk of accounting mistakes and fraud of financial statements in conditions of Czech accounting standards (CAS)
HŘEBEČKOVÁ, Darina
The aim of the thesis is to evaluate the possibilities of evaluation of the risk of accounting frauds and accounting mistakes in the financial statements compiled in terms of Czech accounting standards for their users using analytical tools and methods of the financial analysis. Part of the thesis is the proposal of concrete tools or models that reduce the asymmetry of information between the makers of the financial statements and other users of the financial statements and can be implemented in the internal control system of the unit when decision-making on the financial health of selected accounting units. For practical part was chosen an enterprise with a long tradition. Monitoring ratios of The Beneish Model M-Score detect risk areas and tracking ratio trend may alert management to instability in the financial statement. Liquidity and debt ratios are also appropriate methods for reducing the information asymmetry.
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Acoustic communication and its variability in selected populations of ground squirrels of the genus Spermophilus
Schneiderová, Irena
Acoustic communication and its variability in selected populations of ground squirrels of the genus Spermophilus (abstract) Irena Schneiderová; Department of Zoology, Faculty of Science, Charles University in Prague The thesis deals with vocalizations produced by Eurasian ground squirrels of the genus Spermophilus. It is mainly focused on inter-species and intra-species variability in acoustic structure of alarm calls which are emitted in presence of predators. The major part of the thesis deals with intra-species variability in acoustic structure of the alarm calls in five Eurasian ground squirrels, Spermophilus citellus, S. taurensis, S. xanthoprymnus, S. suslicus and S. fulvus. It has been confirmed that the alarm calls of these ground squirrels show a high level of species specificity. The thesis further describes another vocalizations produced by three Eurasian ground squirrel species, Spermophilus suslicus, S. citellus and S. fulvus., and shows that with the exception of the alarm calls, vocal repertoires of these three ground squirrels are remarkably similar. The last part of the thesis deals with individual distinctiveness of the alarm calls of three Eurasian ground squirrels, Spermophilus citellus, S. taurensis and S. xanthoprymnus. It has been shown that the alarm calls of these species have a...
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Acoustic communication and its variability in selected populations of ground squirrels of the genus Spermophilus
Schneiderová, Irena ; Vohralík, Vladimír (advisor) ; Sedláček, František (referee) ; Špinka, Marek (referee)
The thesis deals with vocalizations produced by Eurasian ground squirrels of the genus Spermophilus. It is mainly focused on inter-species and intra-species variability in acoustic structure of alarm calls which are emitted in presence of predators.The major part of the thesis deals with intra-species variability in acoustic structure of the alarm calls in five Eurasian ground squirrels, Spermophilus citellus, S. taurensis, S. xanthoprymnus, S. suslicus and S. fulvus. It has been confirmed that the alarm calls of these ground squirrels show a high level of species specificity. The thesis further describes another vocalizations produced by three Eurasian ground squirrel species, Spermophilus suslicus, S. citellus and S. fulvus, and shows that with the exception of the alarm calls, vocal repertoires of these three ground squirrels are remarkably similar. The last part of the thesis deals with individual distinctiveness of the alarm calls of three Eurasian ground squirrels, Spermophilus citellus, S. taurensis and S. xanthoprymnus. It has been shown that the alarm calls of these species have a significant potential to encode information about caller identity.
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Recognition of warning signal jay (Garrulus glandarius) in roe deer (Capreolus capreolus)
Pacáková, Alena ; Obleser, Petr (advisor) ; Husinec, Václav (referee)
This elaboration focus on bioacoustics interactions between a deer/roubucke(Capreolus capreolus) living in our territory, which is highly hunted and a jay bird (Garrulus glandarius), which has abilities according to ingrained experiences and traditional folk superstitions hetero-specifically to warn against predators.
On territory of the Czech republic is a deer/roubucke one of the most widespread artiodactyl and a jay bird is one the most common birds. The acoustic communication between those two species plays a big role, but her research was paid only slight attention.
This elaboration focus on recognition is abilities of deer on warning signals received from jay bird. There was 39 records received, how roe deer reacts on jas is bird signals. All recording took place in area of Radotin in Prague. By using the sound system, there were playing control signals of magpie bird follow up with warning signals of jay bird. There were evaluated aspects like sex, bonnet, distance, size of the bunch and of curse their influences on timing of hunting season.
The outcomes helped us to closely understand of life of roe deer and their behavior when they recognize warning signals. The analysis provided us information that roe deer respond the same way to warning signals from jay birds as well as control signals from magpie birds.
Based on further outcomes of the elaboration, it is important to mention unsubstantiated correlations of received signals between sex and age of roe deer.
We assume that behavioral symptoms to warning signals are closely related to experiences of given individual roe deer.
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Eligible behaviour of population at starting warning and notification.
JINDŘICH, Eduard
Annotation Warning of inhabitants in the Czech Republic is ensured by an integrated system of warning and notification. The system consists of terminal elements, rotating or electronic sirens, wireless public address systems and control terminals. Timely warning of inhabitants is essential in case of accidents and extraordinary events. Currently, substantial amounts are being invested into the integrated system of warning and notification and new concepts are being introduced into the sphere of notification and warning of inhabitants. The objective of my thesis is to monitor the behavior of inhabitants of the South Bohemian region in case of a start-up of the integrated system of warning and notification. I.e. to identify the number of persons who would know what to do in case of an extraordinary event. The research was conducted by means of a questionnaire survey. Questionnaires were distributed to inhabitants of the South Bohemian region in all age categories. The completed questionnaires were processed into diagrams. In conclusion of the thesis I have summarized the most important findings resulting from the survey and proposed potential solutions for this issue.
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