|
|
Tapinothrix clintonii sp. nov. (Pseudanabaenaceae, Cyanobacteria), nový druh na pomezí pěti rodů
BOHUNICKÁ, Markéta
Previously unknown cyanobacterium was found in Grand Staircase-Escalante National Monument, Utah, USA. Looking at morphological characteristics, an argument could be made to place this taxon in any of the following genera: Ammatoidea, Homoeothrix, Leptolyngbya, Phormidiochaete, and Tapinothrix. Phylogeny based on 16S rDNA suggested that the taxon belongs into family Pseudanabaenaceae and is closely related to Leptolyngbya sensu stricto. However, it possess distinctive morphology of heteropolar tapered filaments and unique 16S-23S ITS sequence and secondary structure. Therefore an assignment into pseudanabaenalean genus Tapinothrix was made and the species was described as Tapinothrix clintonii.
|
|
|
Phylogenetic analyses of myxosporeans based on the molecular data
BARTOŠOVÁ, Pavla
This thesis is focused on the assessment of the phylogenetic position of the Myxozoa within the Metazoa, study of the evolutionary relationships within myxosporeans and investigation into the cryptic species assemblages of several myxosporeans based on the ribosomal and protein-coding data. The major part of this work was to confirm the evolutionary trends within myxosporeans based on a single gene by other molecular markers in order to find out if the reconstructed relationships correspond to the real organismal phylogeny. This has been a crucial step for future actions in solving the discrepancies between the myxosporean phylogeny and taxonomy.
|
|
| |
|
| |
|
| |
|
| |
|
|
Floristic research in the basin of Pozdeňský and Bilíchovský creeks of Slánsko
BERANOVÁ, Hana
ANNOTATION Hana Beranová University of south Bohemia in České Budějovice {--} Faculty of education {--} department of biology Course: M7504 Teacher for grammar schools Fields of study: Teaching of biology, Teaching of chemistry Floristic research of catchment area of Pozdeň stream and Bílichov stream round Slaný Diploma thesis 2008 The study deals with a description of vegetation of catchment area of Bakov stream and Zlonice stream. In title of study are used the names Pozdeň stream and Bílichov stream, but it{\crq}s only local description. The search had been realised during the vegetation seasons of the years 2006 and 2007. There are characterised geological-petrographical, soil, climatic, hydrographic ratios and basic phytogeographical characteristics of this area in the form of a search. Selected genera of the observed plants are characterised and their incidence is figured in the schematic map of the area. There were found out 299 genera of plants, from which there are 48 stated in the Červený a černý seznam cévnatých rostlin České republiky (stav v roce 2000) (Procházka F. (ed.), 2001). There are described locations of important genera of plants. In discussion of the thesis are described factors, which influence the incidence of some genera of plants. In the annex there are attached schematic maps with places of occurence of the plant genera and photographic documentation. Head of the diploma thesis: Mgr. Rostislav Černý, CSc.
|
|
|
A taxonomy of the genus \kur{Stigeoclonium} in the Czech Republic
CAISOVÁ, Lenka
The genus Stigeoclonium is taxonomically very problematic. The relationships between species of this genus are very little known. There are only a few studies that deal with only morphological revision of the genus Stigeoclonium. Hovewer, up to now no phylogenetic analysis of this genus exists. This study summarizes the knowledge about the genus Stigeoclonim in the Czech Republic and shows the first phylogenetic analysis of this genus.
|
|
|
Variation in the \kur{Melampyrum sylvaticum} group
TĚŠITEL, Jakub
This study deals with morphological variation in the Melampyrum sylvaticum group (Orobanchaceae). Populations of the Hercynian Massif, Western and Eastern Carpathians were investigated using both conventional and geometric morphometric methods. Individual morphological characters were evaluated in detail. Preliminary taxonomic concept of the group is presented. Biogeographical context of detected morphological variation is discussed.
|
|
|
Workshop o ichnotaxonomii - III. Sborník abstrakt
The conference and its contributions covered by the Abstract Book were focused namely on treatment of eggs as specific case of “substrate” or “clasts”, boundary of fossil and recent material, position of micromprphology among the already well-established ichnotaxobases, classification of trackways, taphonomic problems, acceptability of “substrate-crossing” ichnogenera, treatment of bioturbate structures made by plants, and treatment of size as an ichnotaxobase.
|
guest ::
