THAISZIA - JOURNAL OF BOTANY, Volume 15, 2005 - abstracts
THAISZIA – JOURNAL OF BOTANY
vol. 15, 2005 – Abstracts
Adedeji O. (2005): Pollen morphology of the three species of the genus Emilia CASS. (Asteraceae) from Nigeria. – Thaiszia – J. Bot. 15: 1-9. – ISSN 1210-0420.
Abstract: The structural morphology of the pollen grains of the three species of Emilia occurring in Nigeria is reported. The report is based on the study carried out with a light microscope on acetolysed pollen grains. Observations from this investigation show that E. coccinea with more acolpate and monocolpate pollen grains is the most primitive out of the three species studied. Tetracolpate pollen grain which is an advanced type of pollen grain was observed in E. praetermissa alone affirming that this taxon is more advanced than the other two taxa investigated. So based on this study, the order E. coccinea followed by E. sonchifolia followed by E. praetermissa in ascending order of recent evolutionary development is strongly affirmed. Moreover out of all the pollen grain attributes statistically analysed, number of pores on the pollen grains is an attribute that can be used effectively and reliably to separate, delimit and classify the species of Emilia.
Jurčák J., Čuříková M. & Látr A. (2005): The root anatomy and mycorrhiza of Epipactis pontica TAUBENHEIM (Orchidaceae). – Thaiszia – J. Bot. 15: 11-30. – ISSN 1210-0420.
Abstract: The adventitious roots of Epipactis pontica Taubenheim are monostellar. A single–layer rhisodermis is covered by root hairs throughout the lenght of roots. The primary cortex is formed by exo-, mezo- and endodermis. The single - layer endodermis comprises of thin walled permeable and thick walled impermeable cells. Central cylindres (actinostele) contain radial vascular bundles, from tetrarch to hexarch. The root anatomy of Epipactis pontica is similar to other species of the genus Epipactis. The rhisodermis is locally covered by a fungal hyphae cover which is the source of the hyphae for the root infection. The fungal hyphae infiltrate the root environment only at short distances. The anatomical index of endotrophic mycorrhiza (AIMen in %) expresses the relationship between the infected cells and all the cells of the primary cortex. It is used for the evaluation of the root and root hairs intensity of mycotrophy from the anatomical point of view. These three zones of the roots were evaluated: apical, middle and basal. The AIMen of the root hairs was 15.45% and for the primary cortex was 13.01%. The root infection of Epipactis pontica was the lowest in comparison to the root infection of E. palustris and E. helleborine.
Šoltés R. & Mačáková M. (2005): The second location of Oreas martiana (Bryophyta) in the Carpathians (The Tatra Mts., Slovakia). – Thaiszia – J. Bot. 15: 31-34. – ISSN 1210-0420.
Abstract: The authors found the second Carpathians record of the glacial relic moss species Oreas martiana in the Tatra Mts., Slovakia. The species grows in a small spring in the altitude of 2000 m a.s.l. The relevé is enclosed and the distribution map in the world is presented.
Jehlík V., Dostálek J. & Zaliberová M. (2005): Spreading of adventive plants on river banks of the Elbe River in the Czech Republic and the Danube River in Slovakia outside of harbours. – Thaiszia – J. Bot. 15: 35-42. – ISSN 1210-0420.
Abstract: In the years 1973-2004, an adventive flora (so called neophytes) and vegetation on open river at planar level outside of harbour bodies in Bohemia on the Elbe River between the towns Mělník and Hřensko, and in Slovakia, on the Danube River between the towns Bratislava-Devín and Štúrovo, as a part of flora and vegetation of river harbours monitoring were investigated. The banks of watercourses on open river (i.e. outside of harbours) are in direct contact with river current carrying away diasporas of plants not only from harbours but also from all ecotopes along river in river basins. In this process, floods play a significant role as well. With regard to transport of diasporas, the Elbe River harbours, in comparison with the Danube River harbours (Bratislava, Komárno), are influenced more significantly by watercourse that is associated with a lower height of harbour embankments and walls above the level of watercourse. Spreading of plants on open river banks is influenced, apart from human activities, also by the erosion-accumulation process that has a selective impact during ecesis of introduced species. Flora of river banks is therefore less rich than flora of actual harbours. In total, there were found on the banks of both watercourses 54 (=100%) adventive plant species (not including archeophytes). The highest number of them belonged to therophytes (68%) and hemicryptophytes (22%). Of 54 neophytes on the banks of the Elbe and Danube Rivers, 50% belong to invasive species. On the Danube River, they were occasionally registered also in the vegetation of the ass. Bidenti-Polygonetum hydropiperis, Odontito-Ambrosietum artemisiifoliae and Rumici crispi-Agrostietum stoloniferae. Of newly spreading invasive species, Xanthium saccharatum and Amaranthus blitum subsp. emarginatus var. pseudogracilis were registered on the Danube River in Slovakia. The difference in presence of alien expansive weeds is significant on both watercourses outside of harbours: 3 species on the Elbe River, 8 species on the Danube River, total 9 species that is not quite 1/3 of all these species known from the harbours. For their spreading, there are particularly favourable broad areas of the Podunajská nížina Lowland, on which fields many species of expansive weeds are naturalised that we cannot state for the planar Elbe River Lowland. To conclude, it can be noted that watercourses in cultivated landscape represent an important way of spreading of neophytes, especially of invasive species.
Spałek K. (2005): Scirpetum radicantis HEJNÝ in HEJNÝ et HUSÁK 1978 in Poland. – Thaiszia – J. Bot. 15: 43-51. – ISSN 1210-0420.
Abstract: The paper presents distribution, floristic composition and ecological requirements of rush community Scirpetum radicantis in Poland. The association was classified to the Phragmitetea class. Scirpetum radicantis is considered to be a very rare and endangered plant community in Europe.
Jakubowska-Gabara J. & Zielińska K. (2005): Influence of the human activity on forest plant diversity. – Thaiszia – J. Bot. 15: 53-62. – ISSN 1210-0420.
Abstract: The vascular flora of Bolimow Landscape Park forests (Central Poland) has been surveyed. The research was carried by the carthogram method on the grid of square 1x1 km and 100x100 m. The meaningful participation of synanthropic plants in the flora was ascertained. The geographical-historical classification of the synanthropic species was carried out. The vascular flora of research area forests is composed of 603 species of which 516 are native taxa and 87 species are anthropophytes. The most anthropophytes occur on the forest roads verges, on the forest borders, near towns and settlements. The most common are kenophytes. The research by transect method in the three forest associations (Tilio-Carpinetum, Querco-Pinetum, Leucobryo-Pinetum) proved that bigger species richness and bigger syntaxonomic and ecologic diversity characterize the plots which are adjacent the roads as compared to those situated far from the roads. The presence of forest roads has meaningful influence on the diversity of vascular flora of forest complexes.
Šilc U. & Čušin B. (2005): Galeopsido-Galinsogetum POLDINI et al. 1998 in NW Slovenia. – Thaiszia – J. Bot. 15: 63-83. – ISSN 1210-0420.
Abstract: The weed vegetation of hoe-fields in the western part of the Julian Alps was studied. Relevé material was compared to relevés from Slovenia and Friuli Venezia Giulia (Italy). The stands are classified into the association Galeopsido-Galinsogetum parviflorae (Stellarietea mediae).
Hájková P. & Hájek M. (2005): Diversity of Calthion wet meadows in the western part of flysch Carpathians: regional classification based on national formal definitions. – Thaiszia – J. Bot. 15: 85-116. – ISSN 1210-0420.
Abstract: We classified vegetation of wet meadows in the western part of flysch Carpathians in Slovakia (Biele Karpaty Mts., Javorníky Mts., Kysuce and Orava region, Inner Carpathian Basins). We tried to classify wet meadow communities in the study area with respect to their diversity at a wider geographical range. For this purpose, we used the formal definitions based on combination of the species groups which were extracted from a large national database. This way the classification could be valid not only at a regional scale, but also for the whole territory of Slovakia. We distinguished six associations of the Calthion alliance (Cirsietum rivularis, Chaerophyllo hirsuti-Calthetum, Angelico-Cirsietum palustris, Scirpetum sylvatici, Angelico-Cirsietum oleracei and Scirpo-Cirsietum cani) by combining six species groups and the dominance of some species respectively. Principal gradients in species composition were interpreted using Ellenberg indicator values. The major gradient was associated with soil moisture and pH and the second most important gradient was associated with available nutrients. At last, we suggested two associations originally defined by the dominance of certain species (Polygono-Cirsietum palustris and Trollio-Cirsietum rivularis) to be only the synonymous of Angelico-Cirsietum palustris and Cirsietum rivularis, respectively.
Hrivnák R., Oťaheľová H., Kochjarová J., Blanár D. & Husák Š. (2005): Plant communities of the class Charetea fragilis FUKAREK ex KRAUSCH 1964 in Slovakia: new information on their distribution and ecology. – Thaiszia – J. Bot. 15: 117-128. – ISSN 1210-0420.
Abstract: In Slovakia, plant communities of the class Charetea fragilis are relatively rare and few recorded. Up to now, seven plant communities documented by only 14 phytosociological relevés have been mentioned from the territory of Slovakia. New plant community Nitelletum syncarpae CORILLION 1957 and further three stoneworts plant communities (Charetum vulgaris CORILLION 1957, Charetum fragilis FIJALKOWSKI 1960 and Charetum hispidae CORILLION 1957) were documented by 14 phytosociological relevés during our research in last years. New ecological and distribution data are presented in this paper.
Farkas E. & Tuba Z. (2005): Contributions to the lichen flora of the Hungarian Bodrogköz (NE Hungary). – Thaiszia – J. Bot. 15: 129-141. – ISSN 1210-0420.
Abstract: From the botanical collecting trips to the Bodrogköz, NE Hungary, organised by Zoltán Tuba in 1982–1983, Edit Farkas collected 76 specimens of 35 lichen species. Furthermore Zoltán Tuba collected 12 additional specimens, among them 3 further species recently. From the 38 species 19 are new to the investigated area. These data represent valuable contributions to the lichen flora of the Bodrogköz area, since together with other literature and herbarium data 59 species are known from the area so far. 18 species are only known from earlier collections or old literature sources. The most frequent species now are as follows: Amandinea punctata, Hypogymnia physodes, Lecanora carpinea, L. symmicta, Parmelia sulcata, Physcia adscendens, Scoliciosporum chlorococcum, Xanthoria parietina. Rare species of the Hungarian lichen flora (e.g., Hypogymnia farinacea, Lecania cyrtella, Normandina pulchella, Trapeliopsis flexuosa) were also collected here.
Ayodele A. E. (2005): The morphology and taxonomic significance of pollen in the West-African Polygonaceae. – Thaiszia – J. Bot. 15: 143-153. – ISSN 1210-0420.
Abstract: The pollen of Polygonaceae in West Africa was studied by light microscopy. Three pollen types are recognized. Type A is typical of Polygonum represented by P. plebeium. These pollen grains are small, 17.5 x 12.5 mm to 22.5 x 15 mm, quadrangular and prolate with thin exine walls (1.5 – 2.5 mm). The Pollen type B is restricted to the Persicaria group. The pollen is of medium size, 34.3 – 45.5 mm polypantoporate, spheroidal with germ pores on the entire surface. Type C pollen is possessed by other genera studied. The grains range from small to large, 19.2 x 19.9 mm in Symmeria paniculata to 51.6 x 44 mm in Antigonon leptopus. They are subprolate, prolate-spheroidal to oblate-spheroidal, triangulate in polar view and oblong, elliptic to round in equatorial view. Palynological evidence supports the segregation of Persicaria from Polygonum as well as revealed that Harpagocarpus is better placed in the tribe Coccolobeae than in the tribe Persicareae.
Nowak A. (2005): Anthropogenic habitats as sites of occurrence of endangered, rare and protected plants on the example of Opole Silesia, SW Poland. – Thaiszia – J. Bot. 15: 155-172. – ISSN 1210-0420.
Abstract: The paper presents results of floristic studies conducted on eu- and polyhemerobic anthropogenic habitats in Opole Silesia in years 1997-2003. The subject of the study was occurrence of taxa endangered, rare and protected by law on areas strongly transformed by man, including quarries, gypsum mines, clay-, gravel- and sand-pits, large dam reservoirs, fish-ponds, small anthropogenic ponds, roadsides, railway tracks, channels, walls, boundary strips, harbours, parks, drainage ditches and the remaining urban areas. In the result of the study occurrence in anthropogenic habitats of 198 species from the selected group of 532 plants was stated, including species critically endangered, endangered, vulnerable, near threatened, rare and protected by law. In total, 688 sites of selected plants were documented in anthropogenic habitats, which was ca 11.5% of all sites of chosen species. Analysis of frequency classes of occurrence in anthropogenic habitats in relation to the total number of sites of a given species revealed that most taxa fell in two first classes, i.e. up to 40% of all their sites were located in anthropogenic habitats. Only 18 taxa had a decided majority of sites, i.e. over 80%, in such ecosystems. Anthropogenic habitats richest in sites of the selected species were fishponds and quarries. These species were the scarcest in small ponds, balks and drainage ditches. The author concludes that habitats strongly transformed by man are important in protection of the natural floristic diversity and must not be omitted in strategies of nature conservation.
Posledná aktualizácia: 27.08.2021