Landscape protection and planning at the hydrological "Roof of Europe"
(Danube–Odra–Elbe river catchments)

Lichens of the central part of the Bohemian Karst

Die Desmidiaceenflora von Pískovny Cep (Südböhmen)

The study of the relation between wheat leaf rust (Puccinia persistens subsp. triticina) and winter wheat (Triticum aestivum) from aspect of its genetics of resistance

River landscapes and extreme floods in Central Europe (1997, 2002): need for long-term research

Culture Collection of Fungi (CCF) in Prague – original isolates accessed during 2003-05

Bibliography of the Department of Botany, Faculty of Science, Charles University, Prague, for the period 2004-2006

Landscape protection and planning at the hydrological "Roof of Europe"
(Danube–Odra–Elbe river catchments)

Comparative study of lichenized fungi in central part of the Protected Landscape Area Český kras (Bohemian Karst) is presented on the basis of recent and historical research. This study is a detailed survey of lichens in the Berounka river canyon as well as adjacent localities outside the valley belonging to the central part of the Protected Landscape Area.

The Bohemian Karst has already been subject to many studies; however a complete description of lichen flora was missing. Based on previous publications and herbaria specimens, references to more than 250 species of lichens were found during recent investigations; in total more than 290 species were confirmed or newly discovered. Three of these taxa are reported for the first time in the Czech Republic: Caloplaca albolutescens (Nyl.) H. Olivier, Lecanora flotoviana Spreng. and Placynthium hungaricum Gyeln. The number of lichens found in investigated area represents approx. 17% of the known lichen flora of the Czech Republic. The majority of the species shown in available sources were confirmed, many species are new to the Bohemian Karst.

There are a number of saxicolous, mostly calciphilous species, as well as species growing on diabase (proterozoic basalt). Many species that rarely occur elsewhere in the Czech Republic (Caloplaca marmorata (Bagl.) Jatta, Peccania cernohorskyi (Servít) Czeika et Guttová, Phaeophyscia hirsuta (Mereschk.) Essl., Psora decipiens (Hedw.) Hoffm., Mycobilimbia lurida (Ach.) Hafellner et Türk, Cladonia convoluta (Lam.) Anders, Rinodina aspersa (Borrer) J. R. Laundon, R. calcarea (Arnold) Arnold, etc.) were encountered. In the shady spots of ravines and on north-facing slopes even species more typical for montane areas (Polyblastia cupularis A. Massal., Thelidium papulare (Fr.) Arnold, Solorina saccata (L.) Ach.) were found. The epiphytic lichen flora is developed mostly in the central forested part of the region; besides the common species for example Pleurosticta acetabulum (Neck.) Elix et Lumbsch, Flavoparmelia caperata (L.) Hale, Ramalina farinacea (L.) Ach. or Rinodina exigua (Ach.) Gray were noted.

Die Biodiversität und Ökologie der Desmidiaceen in Pískovny Cep werden diskutiert. Insgesamt 84 Taxa von Desmidiaceen wurden gefunden, 4 davon (Cosmarium sexnotatum, var. tristriatum (Lütkem.) Schmidle, C. vogesiacum Lemaire, Staurastrum iotanum Wolle, S. lapponicum (Schmidle) Grönblad) sind Erstfunde für die Tschechische Republik.

The presence of the resistance genes Lr37 and Lr10 was verified in chosen cultivars by using infection tests of leaf rust races with known virulence genes and by using the molecular markers. The gene Lr37 was detected using published DNA SCAR marker SC-Y15 (Robert & al., 1999) in these cultivars: Apache, Banquet, Bill, Brigadier, Clever, Corsaire, Rapor and Terza. The presence of the gene Lr10 was proved by the molecular marker STSLrk10-6 (Schachermayr & al., 1997) in cultivars Alka, Alana, Bill, Siria, Consort, Galahad, Haven, Mercia, Rapor, Terza, Torfrida and Trémie.

Extreme floods of the Vltava and Elbe river catchments at the end of the summer 2002 were similar in some aspects to those of 1997 in Moravian and Eastern-Bohemian rivers. The flood-plain of the Tichá Orlice river – enriched by new sediments and new plant species – became an experimental area useful for testing and monitoring major ecological processes following the “two-hundred-years” flood. Selected results of the research are presented: e.g., the role of seed bank, the viability and germination ability of seeds, community resistance in relation to expansive species and a comparison of vegetation development on different flood sediments.

From the geomorphological point of view, the river basin is formed by depressions, elevations, terraces, etc., of differing age and structure. The flood may either fill-in terrain depressions, or further increase the differences by depositing material onto elevated sites. All this replaces the old mosaic of biotopes by another (Kovář 2003, Kovář et al., 2003). A set of bare sediment habitats contributes to rejuvenation of the ecosystem; alien elements, both structural and chemical, change it to a certain degree. The changing green mantle of the river landscape probably reflects climate changes interacting with man-influenced land surfaces.

One hundred and sixty-five strains of saprotrophic filamentous microfungi are presented which were accessed by the Culture Collection of Fungi (CCF), Prague (Czech Republic) during 2003–05. They represent original isolates from natural habitats (e. g. bark beetles, soil), clinical substrates and foods, predominantly from the area of the Czech Republic. Very important are the strains of Geosmithia, fungus associated with bark beetles. Four Geosmithia strains are derived from type specimens. Seventeen strains of Verticillium were re-identified as species of genera Lecanicillium, Simplicillium or Pochonia.