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Swarming and hibernation of bats in scree fields and talus slopes
Legát, Jakub ; Lučan, Radek (advisor) ; Andreas, Michal (referee)
This literature review attempts to summarize the knowledge on swarming of temperate bats. It focuses on the characteristics of the term swarming and the history of research on this behaviour in the Czech republic and worldwide. It describes in some detail the species that participate in this behaviour, defines the period when bat swarming take place and discusses the factors that influence this behaviour. The second part of the paper summarizes information on swarming and hibernation of bats in scree fields and talus slopes. However, there is very little information to date on whether and in what quantities bats use this habitat during swarming and hibernation period. This thesis discusses existing surveys on this issue and is designed as a theoretical overview for the field research that author intends to undertake during his master's degree.
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Feeding ecology of bats in the Mediterranean
Žďárská, Lenka ; Benda, Petr (advisor) ; Andreas, Michal (referee)
My work concerns the review of feeding strategy and ecology in bats of the Mediterranean. The aim was to provide an overview of food and feeding habits of bat species of the family Vespertilionidae inhabiting the Mediterranean region. First, there is a description of the geography, climate and biodiversity of the Mediterranean. Furthermore, there are described feeding strategies of particuar bat species in connection with the morphological structure of their bodies. The main part represents an overview of bat species in connection with their food. As it turned out, in some species, especially in the newly differentiated and/or endemic (Pipistrellus hanaki, Plecotus sardus, Plecotus teneriffae, etc.), there is a lack of any reference to their food or feeding strategy, on the other hand, there are species which are of considerable interest and for which a lot of data exists (Pipistrellus pipistrellus, Plecotus auritus, Barbastella barbastellus, etc.).
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Feeding ecology of bats in the eastern Mediterranean
Žďárská, Lenka ; Andreas, Michal (advisor) ; Gajdošík, Martin (referee)
This work gives an overview of the composition of the diet of bats in the eastern Mediterranean and the Middle East, discusses the structure of bat communities in different bioregions of the area in terms of hunting strategies and resource partitioning and last but not least, how echolocation and morphological characteristics of bats affect the composition of the diet. Although some samples were relatively small therefore it is necessary to look soberly at their informative value, and thus their importance is undeniable. The study in some cases provides completely the first information regarding the composition of diet in several species. Asellia arabica mainly catches Coleoptera (Scarabaeidae), Triaenops persicus hunts Lepidoptera, but Heteroptera, Coleoptera (Scarabaeidae) and Orthoptera too, while Triaenops parvus is a specialist in hunting Lepidoptera. Rhinopoma muscatellum hunts mainly Formicoidea, followed by Coleoptera (Melolonthinae) and Heteroptera, Rhinopoma hadramauticum hunts Formicoidea. Lepidoptera of different size, Heteroptera and Coleoptera are the prey of Chaerephon nigeriae. Pipistrellus hanaki has a wide niche breadth as other species of the genus Pipistrellus. In this study Brachycera, Auchenorrhyncha and Coleoptera primarily occurred in its diet. Not yet described species of...
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Effect of urban gradient on composition of bat communities in Central European landscapes.
Kočí, Jakub ; Lučan, Radek (advisor) ; Andreas, Michal (referee)
Bats (Chiroptera) are usually considered as a group greatly endangered by destructing their habitats through the human activity. However, a significant part of bat species at the central Europe use human buildings as shelters, moreover the natural shelters are marginal or unknown in several species. Considering the linkage of the great part of our bat species to the fragmented area and in connection with a long term human influence on the central european landscape we ask whether at least part of our species see human activity through providing proper shelters as positive. Based on the analysis of landscape structure and ruggedness effect on density, diversity and population structure of bat assamblages acquired by standardized mist net captures located in lowlands (elevations below 500 m) of Czech Republic (204 localities, 3585 bats, 22 bat species), we found that even though most of reactions were species specific and few species seemed to be positively associated with urban environments, most of the bat species rely on the broad-leaved forest cover and other natural habitats such as water bodies. The most significant factor influencing sexual segregation for bats was ruggedness of surrounding landscape. Keywords: Bats, Chiroptera, fragmentation, Europe, temperate zone
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Trophic ecology of the greater mouse-eared bat (Myotis myotis)
Bendová, Barbora ; Andreas, Michal (advisor) ; Bartonička, Tomáš (referee)
In 2012 it was observed foraging ecology of the three males of greater mouse-eared bat (Myotis myotis), inhabiting individual roosts in the interior of road bridge near Bernartice, and the nearest nursery colony of the same species in the village Senožaty (district Pelhřimov). In the period April to September in Senožaty were made 14 collections at intervals of approximately 14 days and in the bridge near Bernartice at similar intervals were made 8 collections from each male in the period from May to September. From each collection were subsequently been analyzed 20 samples (pellets) by the traditional method of preparation of faeces. Overall it was from all the bats analyzed 760 samples, of which 280 from the nursery colony and 480 from males. Based on the analysis was found diet composition of individual bats and of the colony, where the overall character of the trophic niche of the greater mouse-eared bat, seasonal dynamics in it's diet composition, sex differences and individual differences between males were observed. From a point of view of it's hunting strategy the greater mouse-eared bat showed itself as a ground gleaner, in whose diet were dominated larger Coleoptera, of which the predominant component were large, flightless, mostly forest Carabidae, adding medium and smaller species of...
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Geographic variability in the size of maternity colonies of cave bats
Oppelová, Tereza ; Lučan, Radek (advisor) ; Andreas, Michal (referee)
Main goal of this thesis was to compare geographical variability of sizes of colonies in the relationship with the type of roost of 6 models of originally cave bats species: Greater mouse-eared bat (Myotis myotis), Geoffroy's bat (Myotis emarginatus), Common bent-wing bat (Miniopterus schreibersii), Greater horseshoe bat (Rhinolophus ferrumequinum), Lesser horseshoe bat (Rhinolophus hipposideros) a Mediterranean horseshoe bat (Rhinolophus euryale). The selected data set was also analyzed the possible influence of the composition of land cover in roosts around the variability of the size of the colonies. Based on compilation of literature and active communication with regional bat-monitoring coordinators, entries about size of colonies from 2 603 locations in 24 countries of Europe were collected. 1 952 entries were from roosts in buildings and 651 from caves. Based on statistical analysis, conclusive influence of type of roost on size of colonies by M. schreibersii, M. myotis a R. hipposideros was discovered. While in M. schreibersii and M. myotis are human colonies in smaller buildings, in R. hipposideros by contrast, they are larger. Simultaneously, north-west gradient in geographical distribution of maternal bat- colonies in dependence on type of roost (caves vs. buildings): in southern areas...
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Feeding ecology of bats in the eastern Mediterranean
Žďárská, Lenka ; Andreas, Michal (advisor) ; Gajdošík, Martin (referee)
This work gives an overview of the composition of the diet of bats in the eastern Mediterranean and the Middle East, discusses the structure of bat communities in different bioregions of the area in terms of hunting strategies and resource partitioning and last but not least, how echolocation and morphological characteristics of bats affect the composition of the diet. Although some samples were relatively small therefore it is necessary to look soberly at their informative value, and thus their importance is undeniable. The study in some cases provides completely the first information regarding the composition of diet in several species. Asellia arabica mainly catches Coleoptera (Scarabaeidae), Triaenops persicus hunts Lepidoptera, but Heteroptera, Coleoptera (Scarabaeidae) and Orthoptera too, while Triaenops parvus is a specialist in hunting Lepidoptera. Rhinopoma muscatellum hunts mainly Formicoidea, followed by Coleoptera (Melolonthinae) and Heteroptera, Rhinopoma hadramauticum hunts Formicoidea. Lepidoptera of different size, Heteroptera and Coleoptera are the prey of Chaerephon nigeriae. Pipistrellus hanaki has a wide niche breadth as other species of the genus Pipistrellus. In this study Brachycera, Auchenorrhyncha and Coleoptera primarily occurred in its diet. Not yet described species of...
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Feeding ecology of bats in the Mediterranean
Žďárská, Lenka ; Benda, Petr (advisor) ; Andreas, Michal (referee)
My work concerns the review of feeding strategy and ecology in bats of the Mediterranean. The aim was to provide an overview of food and feeding habits of bat species of the family Vespertilionidae inhabiting the Mediterranean region. First, there is a description of the geography, climate and biodiversity of the Mediterranean. Furthermore, there are described feeding strategies of particuar bat species in connection with the morphological structure of their bodies. The main part represents an overview of bat species in connection with their food. As it turned out, in some species, especially in the newly differentiated and/or endemic (Pipistrellus hanaki, Plecotus sardus, Plecotus teneriffae, etc.), there is a lack of any reference to their food or feeding strategy, on the other hand, there are species which are of considerable interest and for which a lot of data exists (Pipistrellus pipistrellus, Plecotus auritus, Barbastella barbastellus, etc.).
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Flight activity of bats in habitats with different represantation of human settlements
Kovaříková, Kristýna ; Andreas, Michal (advisor) ; Helena, Helena (referee)
Bats are important part of diversity of mammal fauna and they are used as indicators of environment quality. Many bat species, even those regarded as forest dwellings, use human settlements as a roosts and shelters. The bat community structure and activity of particular species will be studied at different places in order to determine the influence of presence of human settlements on forest bats. Detectoring and recording of bat echolocation calls will be used as an effective method enabling to monitor the presence and activity of particular bat species in different habitats.
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Minimalizace vlivu liniových bariér tvořených dopravní infrastrukturou na volně žijící živočichy
Hlaváč, V. ; Toman, A. ; Tomášek, M. ; Marhoul, P. ; Červený, Jaroslav ; Koubek, Petr ; Homolka, Miloslav ; Volf, O. ; Suchomelová, E. ; Andreas, M. ; Matyáštík, T. ; Šafář, J. ; Ráš, V. ; Pykal, J. ; Čeřovský, V. ; Rejl, J. ; Vykopal, V. ; Zajíček, R.
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