Number of found documents: 80
Published from to

Seasonal development and vertical distribution of soil rotifer populations in South-Bohemian beech forest
Devetter, Miloslav
2009 - English
The soil rotifer community in a climax beech forest in South Bohemia was investigated during 2005 focusing on seasonal and vertical distribution changes. Samples 10 cm.sup.2./sup. large and 10 cm in depth were divided into 5 layers, which were processed separately. Altogether 31 rotifer species were determined during the investigation, of these 9 species were monogononts, while the rest were bdelloids. The most important species were .i.Encentrum arvicola, Wierzejskiella vagneri./i. among the monogononts and .i.Adineta steineri, Ceratotrocha cornigera, Habrotrocha filum, H. ligula, Macrotrachela plicata, Mniobia tentans, M. incrassata, M. granulosa./i. among the bdelloids. Mean Shannon diversity index varied from 1.99 to 2.63. Total rotifer abundance varied from 212 (± 63) to 513 (± 127) 10.sup.3./sup. ind. m.sup.-2./sup. year-round, with the highest numbers found in May, while the lowest were in July. Keywords: soil; rotifer community; bdelloids Available at various institutes of the ASCR
Seasonal development and vertical distribution of soil rotifer populations in South-Bohemian beech forest

The soil rotifer community in a climax beech forest in South Bohemia was investigated during 2005 focusing on seasonal and vertical distribution changes. Samples 10 cm.sup.2./sup. large and 10 cm in ...

Devetter, Miloslav
Biologické centrum, 2009

Cultivated and wild growing forage crops – reservoirs of viruses and phytoplasmas
Fránová, Jana; Petrzik, Karel; Jakešová, H.; Bečková, M.; Sarkisova, Tatiana
2009 - English
Symptoms of mosaic, yellowing/reddening, phyllody, necrosis and dwarf have been observed in cultivated as well as wild growing forage crops. Red clover mottle virus (RCMV, Comovirus), clover yellow vein virus (Potyvirus), potato virus X, white clover mosaic virus (WClMV, Potexvirus), alfalfa latent and pea streak viruses (Carlavirus), new members of genus Cytorhabdovirus and Carlavirus were identified by sequencing. Bacilliform particles (ca 213 – 533 nm by 44 – 58 nm) of the genus Cytorhabdovirus, WClMV, alfalfa mosaic virus (Alfamovirus) and particles resembling members of the genus Badnavirus were observed on negatively stained preparations and ultrathin sections by electron microscopy and mechanically transmitted to host plants. WClMV, RCMV, bean yellow mosaic virus and new member of Potyviridae family were determined in wild growing plants. The occurrence of phytoplasmas belonging to different 16S ribosomal subgroups was confirmed (16SrI-B, 16SrI-C, 16SrX-A, 16SrXII-A). Keywords: symptoms; electron microscopy; biological and molecular identification Available at various institutes of the ASCR
Cultivated and wild growing forage crops – reservoirs of viruses and phytoplasmas

Symptoms of mosaic, yellowing/reddening, phyllody, necrosis and dwarf have been observed in cultivated as well as wild growing forage crops. Red clover mottle virus (RCMV, Comovirus), clover yellow ...

Fránová, Jana; Petrzik, Karel; Jakešová, H.; Bečková, M.; Sarkisova, Tatiana
Biologické centrum, 2009

Note to the effects of environmental conditions on the occurrence of benthic water bug Aphelocheirus aestivalis (Heteroptera: Aphelocheiridae
Papáček, M.; Ditrich, T.; Soldán, Tomáš; Zahrádková, S.
2009 - English
The aim of this study was to find out what abiotic environmental variables are related to the occurrence of benthic water bug Aphelocheirus aestivalis. Samples and abiotic environmental data sets obtained by extensive monitoring of Labe, Vltava and Danube river basin in the Czech Republic were sorted and analysed by Redundancy analysis (RDA). Results of RDA did not offer transparent response on our question. The reason is probably too rough scaling of environmental variables used commonly by hydrobiologist for monitoring of benthos in running waters. More detailed design of fieldwork is probably necessary for a better solution of question mentioned above. Keywords: Aphelocheirus aestivalis; habitats; abiotic environmental variables Available at various institutes of the ASCR
Note to the effects of environmental conditions on the occurrence of benthic water bug Aphelocheirus aestivalis (Heteroptera: Aphelocheiridae

The aim of this study was to find out what abiotic environmental variables are related to the occurrence of benthic water bug Aphelocheirus aestivalis. Samples and abiotic environmental data sets ...

Papáček, M.; Ditrich, T.; Soldán, Tomáš; Zahrádková, S.
Biologické centrum, 2009

Palingenia longicauda (Olivier, 1791) (Ephemeroptera, Palingeniidae): Do refugia in the Danube basin still work?
Soldán, Tomáš; Godunko, Roman J.; Zahrádková, S.; Sroka, Pavel
2009 - English
Palingenia longicauda (OLIVIER, 1791), a well-known species of mayfly belongsto the most critically endangered species of the Ephemeroptera in Europe. It represents the Pontic faunistic element of the expansive type originally distributed in almost all great and numerous middle-sized European rivers in Austria, Belgium, Bulgaria, Czech Republic, France, Germany, Hungary, Macedonia, Poland, Rumania, Slovakia, Ukraine and Yugoslavia. At present, the species is extinct or at least missing at most of its original area except for relatively small refugia in the Tisza basin in Hungary and probably also Slovakia and Ukraine. Distribution of P. longicauda is discussed and a new subarea in the Danube delta in Rumania (locality near Murighiol, stretch of the Bratul Sfintu Gheoghe) is documented for the first time. The nature of a new occurrence is discussed – it might represent either a new, still unknown refuge and/or recovery of the original population(s) caused by downstream drift. Keywords: Ephemeroptera; Palingenia; Europe Available at various institutes of the ASCR
Palingenia longicauda (Olivier, 1791) (Ephemeroptera, Palingeniidae): Do refugia in the Danube basin still work?

Palingenia longicauda (OLIVIER, 1791), a well-known species of mayfly belongsto the most critically endangered species of the Ephemeroptera in Europe. It represents the Pontic faunistic element of the ...

Soldán, Tomáš; Godunko, Roman J.; Zahrádková, S.; Sroka, Pavel
Biologické centrum, 2009

Impact of ungulate browsing on leaf litter palatability for millipedes (Diplopoda)
Ashili, P.; Tajovský, Karel; Tuf, I.H.; Tufová, J.
2009 - English
Millipedes were used as a model group of decomposers for experimental study focusing on this aspect of ungulate - plant - soil invertebrate relationship. Leaf litter and millipedes (.i.Glomeris klugii, Glomeris hexasticha, Glomeris connexa, Julus scandinavius, Leptoiulus proximus, Megaphyllum projectum, Unciger foetidus./i.) were collected at forest localities in the Křivoklátsko PLA and BR, Czech Republic. Palatability of leaves from two different plots was compared. Leaf litter of beech (.i.Fagus silvatica./i.) and hornbeam (.i.Carpinus betulus./i.) was collected in autumn and spring in both plots and used in laboratory tests with millipedes. Consumption differed significantly between the individual experiments. Millipedes preferred hornbeam leaf litter over beech leaves, leaf litter from the fenced plot over that from the grazed plot, and fresh litter over old, overwintered leaves. Mnohonožky byly použity jako modelová skupina dekompozitorů pro experimentální studium zaměřené na vztahy mezi spárkatou zvěří, rostlinami a půdními bezobratlými. Listový opad a mnohonožky (.i.Glomeris klugii, Glomeris hexasticha, Glomeris connexa, Julus scandinavius, Leptoiulus proximus, Megaphyllum projectum, Unciger foetidus./i.) byly sbírány v lesních porostech CHKO Křivoklátsko. Byla porovnávána chutnost listového opadu z oplocených a otevřených lesních ploch. Listový opad buku (.i.Fagus silvatica./i.) a habru (.i.Carpinus betulus./i.) sbíraný na podzim a na jaře na obou typech ploch byl použit v laboratorních testech s mnohonožkami. Konzumace opadu se signifikantně lišila v rámci jednotlivých variant pokusu. Mnohonožky preferovaly habrový opad před bukovým, opad z oplocených ploch před opadem z otevřených ploch a čerstvý opad před starým opadem po přezimování. Keywords: food preference; millipedes; leaf litter Available at various institutes of the ASCR
Impact of ungulate browsing on leaf litter palatability for millipedes (Diplopoda)

Millipedes were used as a model group of decomposers for experimental study focusing on this aspect of ungulate - plant - soil invertebrate relationship. Leaf litter and millipedes (.i.Glomeris ...

Ashili, P.; Tajovský, Karel; Tuf, I.H.; Tufová, J.
Biologické centrum, 2009

Interactions between the soil micro-flora and invertebrates in Slovak and Moravian caves
Lukešová, Alena; Nováková, Alena
2009 - English
The role of microflora as food for soil invertebrates is well documented. However, data on interactions between communities of organisms living in caves are very limited. Three caves of the Slovak Karst NP (Domica Cave, Dlhá Chodba Cave, Ardovská Cave) and the Amatérská Cave (Moravian Karst) were selected for this study because from visual observations, it was clear that there was some invertebrate activity. The aim of the study was to compare the communities of algae, cyanobacteria and microscopic fungi developing in excrements of cave invertebrates and in the surrounding cave sediment. The richest communities of both algae and microfungi were found in earthworm casts, containing up to two fold more species than in the surrounding sediment (73 species of microscopic fungi in the casts compared to 37 in surrounding cave sediment in the Domica Cave, and 45 vs. 27 species of algae in the Dlhá Chodba Cave). Keywords: microfungi; cyanobacteria; algae Available at various institutes of the ASCR
Interactions between the soil micro-flora and invertebrates in Slovak and Moravian caves

The role of microflora as food for soil invertebrates is well documented. However, data on interactions between communities of organisms living in caves are very limited. Three caves of the Slovak ...

Lukešová, Alena; Nováková, Alena
Biologické centrum, 2009

Soil nematodes in ungulate grazed and ungrazed forests of the Křivoklátsko Biosphere Reserve -- first results of an ongoing project
Háněl, Ladislav
2009 - English
The effect of ungulate grazing on various woodland ecosystems was studied in oak-hornbeam forest, subxerothermic oak forest, and herb-rich beech forest of the Křivoklátsko Biosphere Reserve. Samples of soil nematodes were taken in May 2006 from plots within enclosures established in 1993 and from plots outside the enclosures. The total abundance of nematodes varied from 248.7 to 790.0 x 10.sup.4./sup. ind.m.sup.-2./sup. and was always greater outside the enclosures. In two cases out of four the difference was statistically significant. Bacterivores were the most numerous nematodes. Their abundance was greater only in one plot outside the enclosure in the oak-hornbeam forest and about one half of the bacterivores were short-living .i.Rhabditis./i.. The abundance of root-fungal feeders (mainly .i.Filenchus./i.) was always greater outside the enclosures than within enclosures. Keywords: Nematoda; community structure; trophic groups Available at various institutes of the ASCR
Soil nematodes in ungulate grazed and ungrazed forests of the Křivoklátsko Biosphere Reserve -- first results of an ongoing project

The effect of ungulate grazing on various woodland ecosystems was studied in oak-hornbeam forest, subxerothermic oak forest, and herb-rich beech forest of the Křivoklátsko Biosphere Reserve. Samples ...

Háněl, Ladislav
Biologické centrum, 2009

Microarthropods and microbial participation in oak and beech litter decomposition
Farská, Jitka; Jínová, Kristýna; Jirout, Jiří; Petrásek, Jiří; Čápová, Lenka; Rusek, Josef; Krištůfek, Václav; Elhottová, Dana; Starý, Josef
2009 - English
The aim of our work was to describe the impact of a simulated vegetation zone shift to higher altitudes (i) on the quantity and quality of microarthropods and microbial communities, and (ii) on the decomposition rate of allochthonous leaf litter. In November 2002, 480 litterbags filled with oak or beech leaf litter were placed into spruce and beech forests (950 m a. s. l.) on Kleť Mt. (1083 m; Blanský les Protected Landscape Area, South Bohemia). Three different mesh sizes were used for certain soil biota exclusion: > 2 mm, 0.5 mm and 42 μm. Litterbags were sampled after 2, 4, 6, 12, 24 and 36 months of exposure in the field. Litter pH and moisture were determined in the laboratory immediately after retrieval. Soil microarthropods (Oribatida, Gamasida and Collembola) were extracted using Tullgren funnels. Soil bacteria and micromycetes were isolated using the dilution plate method and specific growth media. Keywords: decomposition; litterbag; microarthropods Available at various institutes of the ASCR
Microarthropods and microbial participation in oak and beech litter decomposition

The aim of our work was to describe the impact of a simulated vegetation zone shift to higher altitudes (i) on the quantity and quality of microarthropods and microbial communities, and (ii) on the ...

Farská, Jitka; Jínová, Kristýna; Jirout, Jiří; Petrásek, Jiří; Čápová, Lenka; Rusek, Josef; Krištůfek, Václav; Elhottová, Dana; Starý, Josef
Biologické centrum, 2009

10.sup.th./sup. Central European Workshop on Soil Zoology, Abstract book
Tajovský, Karel
2009 - English
Keywords: central Europe; soil zoology; abstracts Available at various institutes of the ASCR
10.sup.th./sup. Central European Workshop on Soil Zoology, Abstract book

Tajovský, Karel
Biologické centrum, 2009

Defects in light receptors and cell wall synthesis affect boron-regulated growth of Arabidopsis seedlings
Svoboda, Z.; Kocábek, Tomáš; Fellner, Martin
2008 - English
Keywords: plant physiology; light receptors; Arabidopsis Available at various institutes of the ASCR
Defects in light receptors and cell wall synthesis affect boron-regulated growth of Arabidopsis seedlings

Svoboda, Z.; Kocábek, Tomáš; Fellner, Martin
Biologické centrum, 2008

About project

NRGL provides central access to information on grey literature produced in the Czech Republic in the fields of science, research and education. You can find more information about grey literature and NRGL at service web

Send your suggestions and comments to nusl@techlib.cz

Provider

http://www.techlib.cz

Facebook

Other bases