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Study of microscopic fungi in Zbrašov Aragonite Caves
Nováková, Alena
The first study of microscopic fungi in the Zbrašov Aragonite Caves was focused on microfungal outbreak of aragonite surfaces. Recently, the investigations were focused on the comparison of microfungal occurrence in sites with various CO.sub.2./sub. concentration and in the terms of monitoring of microscopic fungi in all show caves of the Czech Republic. Since 2009, microscopic fungi were regularly studied in cave air and sediments, species diversity and CFU counts were estimated in both substrates. Very interesting microfungal spectrum including a novel species of the genus .i.Aspergillus./i. (.i.A. "pseudoinsuetus"./i.) as well as interesting records about quantitative microfungal occurrence were found.
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Findings of new troglophilous millipede species
Tajovský, Karel ; Mlejnek, R.
The recent research carried out by the Cave Administration of the Czech Republic in co-operation with the Institute of Soil Biology, Academy of Science of the Czech Republic, České Budějovice clearly shows that invertebrate species diversity in caves in the Czech Republic is much higher than it was previously thought. In 32 caves in Bohemia and Moravia, 35 millipede species have been found which is about a half of the number inhabiting the Czech Republic as a whole. In species -poor and simplified food webs in caves and other underground habitats, millipedes play a significant role in litter decomposition and in control and spreading micro-organisms, particularly microscopic fungi. Therefore, keeping the decayed (rotted) wood can maintain necessary life conditions for these invertebrates there. Two millipede species are new for the Czech Republic fauna. The tiny white millipede .i.Brachychaeteuma bradeae./i. has been reported from six caves while .i.Macrosternodesmus palicola./i. occurs on the country's territory only at the Mladeč Caves (central Moravia).
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Invertebrate fauna in Zbrašov aragonite caves
Tajovský, Karel ; Tuf, I.H. ; Papáč, V. ; Růžička, Vlastimil ; Mlejnek, R.
This contribution summarized the research of invertebrate fauna in ZAC. They have been implemented since the nineties of the 20th century. The most intensive study has started since 2001, when the Cave Administration of the Czech Republic in cooperation with existing workplaces of Biology Centre AS CR in České Budějovice and the Palacký University in Olomouc systematically explored the entire cave. The result was the detection of 49 kinds of invertebrates. The observed fauna consists of troglofilous species whose population evidently lives permanently here, and also number of representatives who occasionally penetrate the caves from the outside or have found the better conditions in the cooler parts of the year here. The contribution commented on some more important species.
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The study of sediments and speleothems in the Zbrašov Aragonite Caves
Bosák, Pavel ; Šlechta, Stanislav ; Hercman, H. ; Pruner, Petr
The numerical dating of hydrothemal speleothems (doughnuts) from locality At Crocodile gave older data than was published in the literature: 123 to 127 thousand years (with range 108 to 144 thousand years). Speleothems crystallized in the time of climatic optimum of the last interglacial period (Eemian) corresponding to the marine isotope stage (MIS) 5e. Clastic sediments from excavations in the area At Crocodile show normal paleomagnetic polarity in all samples with nearly recent magnetic field directions. Studied sediments cover block of hydrothermal speleothems fallen from the wall and therefore they must be younger than 108 thousand years.
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