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A new localityof Isolepis setacea has been found on a terrace of the Łacha river near Nieszowice village. It occurs there on bottoms and banks of new ponds, dug in 1998. The population consists of a few thousand of individuals.
Kamienny Grzbiet Ridge is a small hill situated in the Ślęża Massif, built of serpentine rocks. The subjects of the researchwere vascular flora of grassland community Viscario-Avenuletum pratensis Oberd. 1949 developed in small areas near serpentine quarries and vascular flora of fields covering almostt he whole hill. 82 grassland and 76 weed species have been found there. Particularly interesting are: Avenula pratensis, Orobanche caryophyllea, Carduus nutans and Vicia pannonica ssp. pannonica.
The phytosociological database Polish Vegetation Database collects relevés of all vegetation types in Poland. The database was established in 2007 and is located at Department of Biodiversity and Plant Cover Protection, University of Wrocław (http://synbiot.uni.wroc.pl). On March 2012, the database included 40000 relevés collected between 1927 and 2011. Most of relevés was taken from published papers and represents almost all types of habitats of Poland. Large groups of relevés represent meadows and pastures (Molinio-Arrhnehteretrea), broadleaf forests (Querco-Fagetea), arable land communities (Stellarietea), coniferous forests (Vaccinio-Piceetea) and eutrophic reed communities (Phragmitetea). In comparison to other countries in Central Europe, Polish Vegetation Database currently belongs to medium-sized databases, with full functionality and accessibility. The present article describes its development, basic operational information and how it can be used in analysis of vegetation in Poland.
Communities of purple moor-grass meadows are generally decreasing. Many important problems of classification and phytogeography are connected with them. The main goal of the present study was to evaluate changes in species diversity that took place after mowing of Molinion meadows in Kampinoski National Park was discontinued from 1993 to 2006. Selected Molinion meadows in the park were evaluated in terms of their biological diversity. The data collected represented meadows that were still maintained, as well as meadows that had been abandoned at different times in the past. Biodiversity was evaluated using standard ecological indices and Disturbance Index (Z). In general, the Disturbance Index showed an increase in plant community forms that were abandoned or invaded by alien species. An association that was most like the typical form was seen in well maintained meadows, which suggests that the Disturbance Index continually rises with time after a meadow is abandoned. Ecological strategies and mowing tolerance were determined with the help of the BIOLFLOR database. Numerical classification revealed a highly diverse pattern of variability in the meadows examined. Correlations between ecological indicators and phytocenotic variability in Molinion meadows were also evaluated. Unmanaged meadows were compared to meadows in which meadow conservation management practices were carried out.
This work presents characteristics of plant communities identified as forest habitats of European Ecological Natura 2000 Network in Oleśnica Śląska Forest Inspectorate. A fieldwork was carried out on the total area of 4 262.67 ha, which was pointed out as probable Natura 2000 forest habitats on the basis of the species composition of stands and forest habitat type. Data was collected in accordance with the Braun-Blanquet method in selected forest subsections. 121 relevés were used in the analysis. The fieldwork confirmed Natura 2000 habitats on the area of 1 761.4 ha. Finally, they represent 6.7% of the forest inspectorate area. The habitats in a good condition were found on the area of 293.7 ha (16.7%) and the degenerated habitats on the area of 1 467.7 ha (83.3%). 6 forest habitats represented by 7 forest associations were identified: Vaccinio uliginosi-Pinetum (91D0-2), Molinio caeruleae-Quercetum roboris (9190), Calamagrostio arundinaceae- Quercetum petraeae (9190), Fraxino-Alnetum (91E0-3), Ficario-Ulmetum minoris (91F0), Galio sylvatici-Carpinetum betuli (9170-1), Luzulo pilosae-Fagetum (9110-1). The area of elm-ash forests was the largest and the area of Scotch pine bog forest was the smallest. Among the other habitats the area of beech forests was also significant.
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