The Floating Fern, Salvinia natans, is a species of fern associated with stagnant water, primarily oxbow lakes, but also ponds clay pits, low-flow drainage canals and ditches. In these ecosystems, it most often forms phytocoenoses of Salvinio natantis-Spirodeletum polyrhizae. Due to anthropogenic changes in the river valleys where this species and its communities usually occur, they are under threat of extinction in many parts of Europe. The floristic composition and structure of the phytocoenoses dominated...

The aim of our study was to complete the syntaxonomical scheme for grassland vegetation of the lowland, montane and alpine zones in the Pamir-Alai and western Tian Shan Mts in Tajikistan and Kyrgyzstan with some remarks on its environmental predictors. A total of 198 relevés were sampled in 2013–2018 using the seven-degree cover-abundance scale of the Braun-Blanquet approach. They were classified with k-means algorithmwith tranforming cover values to three level scale of the following intervals0%,...

Agricultural intensification in the last century resulted in a significant loss and fragmentation of steppe habitats. As a result, steppes are scattered and rarely preserved in highly transformed landscapes. Steppe patches have often remained on sites with cultural importance, such as ancient burial mounds (kurgans), old cemeteries or ancient settlements (earthworks). Thus, not only natural but also cultural objects could show a high conservation value. We hypothesised that ancient settlements (3rd – 2nd centu-ry BC)...

A systemic approach in scientific research, including Earth and environmental sciences, has a fairly long history (over 50-70 years). It has demonstrated a high effectiveness in research, and its use is becoming more and more widespread. The article considers selected methodological issues that concern the systemic approach in the field of scientific knowledge about karst (karstology) and caves (speleology), such as: karst as a system-forming factor, holistic approaches in karst research, karst ecosystems and karst...

The text is an analysis of the Polish premiere of Tony Kushner's drama Angels in America. The drama, staged in 1995 as Angels of America at the Wybrzeże Theatre in Gdańsk, directed by Wojciech Nowak, has not made it into the history of Polish political theatre. However, the testimonies of its reception today allow for a complex analysis of the entanglement of political theatre in the so-called political transition. With the help of the category...

Psammophilous grassland communities of inland dunes often occurring together with common juniper scrub are among the most threatened habitat types in Central Europe. Once they were related to disturbance caused by traditional agriculture and forest management (sheep grazing, burning, litter raking and overexploitation of forests). Currently, after the above-mentioned drivers have disappeared, those communities are subjected to secondary succession leading to loss of their typical biodiversity, an importantcomponent of which are cryptogams (bryophytes and lichens)....

The text is an analysis of the Polish premiere of Tony Kushner's drama Angels in America. The drama, staged in 1995 as Angels of America at the Wybrzeże Theatre in Gdańsk, directed by Wojciech Nowak, has not made it into the history of Polish political theatre. However, the testimonies of its reception today allow for a complex analysis of the entanglement of political theatre in the so-called political transition. With the help of the category...