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In this study highly invasive plant species from the Fallopia genus (Fallopia japonica and Fallopia ×bohemica) were investigated for their ability to accumulate heavy metals. Samples were collected from two large cities: Wroclaw and Prague. The content of Cr, Cd, Fe, Pb and Zn in soils covered by Knotweed taxa was determined. Afterwards, plant samples were collected from the places where the largest...
A survey was carried out on the vascular flora of monandocks used for rock climbing in the Mirowskie Skały in the Krakowsko-Częstochowska Upland. The flora along six routes of varying degrees of difficulty was analyzed and compared to that of a control route that was rarely used for rock climbing. The study indicates that it is necessary to control tourism and rock climbing in the Kraków-Czestochowa...
The expansion of invasive plants along the transport routes is a problem especially noticeable in the regional scale. Even if the sites of species result from direct human intervention, it is difficult to identify the responsible person. One of new sites of Fallopia japonica in Lower Silesia was established as a result of road reparation works.
Anthropopressure directly and indirectly affects changes in species composition in plant communities, including communities of Phalaridetum arundinaceae. Variations in habitat conditions, especially moisture content, contribute to the disappearance of typical rush associations and lead to the development of lower phytosociological units. The natural value of Phalaridetum arundinaceae syntaxons is...
The paper presents the first case of Cotoneaster divaricatus growing wild in Poland. The species was found in a pine plantation in the village of Mogielnica (Korczew commune). The population was composed of 21 individuals, 12 flowering specimens and 9 juvenile specimens.
Field research on the ruderal flora of fifteen abandoned villages in Kampinos National Park revealed that among the 550 vascular plant species identified, 13% represent the oldest flora settlers, or archeophytes. The number of archeophytes in particular villages varied from 28 to 46. Only 8 species were present in all of the villages: Armoracia rusticana, Ballota nigra, Capsella bursa-pastoris, Descurainia...
This paper presents the environmental conditions, floristic structure and distribution of the Ranunculo-Callitrichetum hamulatae Oberd. 1957 em. Müll. 1977 from the Potametea R. Tx. et Prsg. 1942 class in the four metallurgic canals in the Opole Silesia (SW Poland).
The vascular flora of the Szczawin forest complex was studied from 2007 to 2011. The results were compared to those of a previous study carried out from 1971 to 1976. The Szczawin forest complex is located north-east of Zgierz in central Poland. It contains the Grądy nad Moszczenicą nature reserve, which was established to preserve the oak-hornbeam forests with their rare protected plant species....
The paper presents results of floristic research on vascular plants in the abandoned limestone quarry in Tyniec. Altogether, 104 species representing 26 families were found. The species composition of the plant communities in the quarry was characteristic of dry grassland and meadow communities. The degree of synanthropization was 97.1%. Carlina acaulis was the only protected species found in the...
Chrysanthemum segetum is a rare species in Poland, which is within the easternmost extent of its range. The species is an anthrophyte that is not native to Poland. The aim of the present study was to determine the the present-day distribution of the species on the basis of field investigation, revised herbarium materials, review of the literature, and both published and unpublished data. Altogether,...
The aim of the study was to determine the degree of the enrichment of the flora of peat bogs and transition mires in anthropophytes and apophytes. The study included the flora of 87 bogs and mires in the Kashubian Lakeland and Kashubian Coastal Region. 149 species of synanthropic plants were found, most of which were found at a single site. Apophytes represented nearly half of the total number of...
In 2009 and 2010, monitoring of conservation status and future prospects of the forest communities of Quercetea robori-petraeae Br.-Bl. et R.Tx. 1943 class was conducted in the Sudetes and their foothills. 31 sites were selected. At each site, three phytosociological releves were collected. An important component of the global assessment of oak forest communities is the occurrence of synanthropic...
The paper presents spatial variation in floristic indices in the mediumsize valley of the San River. Indices of species richness and synanthropization rates were calculated for 366 1 x 1 km cartogram squares. The Spearman rank correlation coefficient was used to analyze the relationships between individual indices. Species richness in individual basic plots ranges from 102 to 391, with a mean of 248...
This document presents new sites of two invasive moss species; Campylopus introflexus and Orthodontium lineare. These species had previously been found on only three sites near Łódź. Two new sites have been identified in the city of Łódź.
The current distribution of Rosa gorenkensis in Poland is presented. The species is found on 16 sites mainly in the eastern part of the country. Evidence that the species has a large invasive potential is also presented.
The article presents the preliminary results of research on changes in the abundance and population density of Epipactis helleborine carried out during the vegetation seasons of 2010 and 2011. The spatial distribution of ramets was analyzed in terms of population changes. The population studied was located in an anthropogenic habitat near the village of Guszczewina on the outskirts of the Białowieża...
The aim of the present study was to determine changes in in the nature of plant communities and to determine general trends in environmental transformations along the middle Vistula valley during the last 25 years. The area studied encompasses part of the floodplain within the borders of Łomianki commune, a suburban district of Warsaw. The study was based on the analysis of two maps, one compiled...
Hacquetia epipactis (Scop.) DC. of the family Apiaceae is one of the most peculiar species in the Polish flora. Outside of Pogórze Cieszyńskie and Ślądk Opolski, it is found at a few isolated sites in southern Poland. It has been protected since 2004 as a rare species. It is listed as vulnerable in the Polish Red Book of Vascular Plants. This paper presents a comparison of two insular populations...
180 vascular plant taxa are found in the Las Mariański forest reserve, including 21 protected and endangered species. In the last 40 years, the total number of species has increased, including the number of anthropophytes. Spontaneous forest succession has taken place on previously open terrain, resulting in a slight increase in the share of species typical for the class Querco-Fagetea and a 9% decrease...
Presented in the paper are characteristics of the meadow communities and assessment of the degree of their synanthropization. The studies were conducted on meadows utilized in Walim District at the base of the Sowie Mountains in 2009 and 2010. Floristic releves were collected using the Braun-Blanquet method. The material obtained served to define the phytosociological affiliation and to estimate the...
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