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  • Author: Beata Barabasz-Krasny x
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Beata Barabasz-Krasny

Abstract

In Poland, the largest stretches of abandoned agricultural areas were formed at the end of the 1980s, along western and eastern borders, among others, in Przemyśl Foothills (Pogórze Przemyskie). Therefore, the research on the diversity of plant communities from abandoned agricultural areas as well as main directions and the rate of succession after the cessation of management was undertaken in the vicinity of twelve municipalities in south-eastern Poland. This research revealed that the dominating direction of changes of the abandoned agricultural area vegetation was vanishing of plant groups with segetal and meadow species and spreading of shrub communities. A general increase in the forestation rate of the researched abandoned agricultural areas from 10-40% of the area in 1970-1971 to about 30-70% in 2003-2004 may be the evidence of the occurrence intensity of those phenomena.

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Anna Sołtys-Lelek and Beata Barabasz-Krasny

Rebuilding of species composition of xerothermic grasslands in selected research areas in the Ojców National Park

The paper contains the results of monitoring of xerothermic grassland management conducted in the research areas Górkowa Skała and Grodzisko in the Ojców National Park. In Górkowa Skała active protection was implemented for the first time in 2005. In Grodzisko, in turn, the first protection measures were taken as early as 1982, but their systematic implementation was started only in 2000. Already at the current stage of investigation positive effects produced by these measures can be observed, especially in areas with relatively shallow soil profiles (around 30 cm). Plot monitoring results showed, among other things, an increase in the abundance and frequency of occurrence of grassland species preferring full-light conditions with periodic shading that grow in poor and dry soils. However, the obtained results also confirmed the assumption that the implementation of grass mowing, shrub clearance and plant biomass removal alone is not sufficient to ensure the restoration of a typical grassland species composition in deeper soil profile areas. Thus, it seems necessary that these protection measures should be supplemented by controlled grazing of farm animals.

Open access

Anna Sołtys-Lelek, Beata Barabasz-Krasny and Jacek Różkowski

Abstract

The paper presents composition of vascular plant species in spring niches in the Ojców National Park (Southern Poland). 111 species of vascular plants, fourteen mosses, two liverworts and one species of ferns were recorded during the first comprehensive study carried out in 2009 and 2010. Plants occurring in these places showed different degrees of association with spring niches. The largest group was represented by accidental krenophytes (74 species), while spring plants - obligatory krenophytes, constituted only a small part of the local flora (5 species). Meadow species of the Molinio-Arrhenatheretea class and forest species of the Querco-Fagetea class, penetrating niche areas from the adjacent areas, were the dominating ones. Plants of aquatic and spring communities were scarce, due to the predominance of small type karst springs. The diversity of vegetation was significantly influenced by habitat factors such as availability of light, humidity or the amount of organic matter in the soil.

Open access

Anna Sołtys-Lelek, Beata Barabasz-Krasny and Katarzyna Możdżeń

Abstract

Although riparian forests are still common in Europe, their variants - similar to natural forests - are rare. They are, as communities, early stages of forest-shrub succession, particularly vulnerable to the expansion of neophytes for which they are an important type of vegetation that enables their spread. In the Ojców National Park (ON P), these types of phytocoenoses are heavily influenced by anthropogenic pressure. The preservation of their biodiversity is particularly difficult because of the fragmentation and small area occupied by the Park - just 2.89 ha. There have been no data on synanthropization of ON P riparian forests until now. The ‘conservation status’ of these communities was determined by examining the degree of anthropophyte participation in their floristic composition. This determination is necessary to take effective preventive measures. In 2012-2014, phytosociological studies were carried out on the ON P riparian communities. A particular attention was paid to the presence and quantitative participation of alien species in research plots. The obtained results revealed that there were 189 plant species in alluvial forests of the ON P, including 80 synanthropic species. The group of synanthropes comprised 32 anthropophytes: 5 diaphytes, 9 archaeophytes and 18 kenophytes.