Survival problems of archaeophytes in the Polish Flora

These considerations have been based on the updated list of archaeophytes appearing in Poland. The extent of endangerment has been assessed for particular species according to the updated IUCN classification. Non-threatened and invasive species have also been taken into consideration. A number of quite fundamental changes have been made to the classification, as compared to the publication of Zając et al. of 2009

Some regularities in the distribution of kenophytes in the Polish Carpathians and their foreland

The Polish Carpathians and their northern foreland are a rewarding object for the kenophyte distribution research. The study, using the cartogram method, showed that the number of kenophyte species decreases with increasing altitude. Only few kenophytes were found in the lower forest zone. This regularity concerns also the species that reach higher altitudes in the mountains of their native lands. A number of species migrated into the Carpathians through rivers and streams. River valleys generate many open habitats, which are easily colonized by kenophytes due to the lack of competition. In the Carpathians, towns used to be founded in the mountain valleys and this was also a favouring factor of kenophyte propagation. The arrangement of mountain ranges in the Polish Carpathians, including their foreland, hindered the migration of some species and allowed to discover the possible migration routes into the area covered by research. Tracing these migration routes was possible only for those species that have not occupied the whole available area yet. Additionally, the study indicated the most dangerous invasive species in the Polish Carpathians and their foreland

Universal design theory in transformation process of street space in Warsaw

Ponència presentada a: Session 8: Post-ocupación / Post-occupancy: buildings and citie

Extinct and endangered archaeophytes and the dynamics of their diversity in Poland

A full list of extinct and endangered archaeophyte species for Poland is presented according to IUCN categories. The species are analysed in respect of their origin and syntaxonomic classification. Endangered archaeophytes should be cultivated in botanical gardens and open-air museums, and next reintroduced to natural sites

The role of rivers and streams in the migration of alien plants into the Polish Carpathians

The Carpathians are among the regions of Poland that are generally less susceptible to invasive alien plants. The factor limiting the spread of the species of this group is, above all, the mountain climate. Even species originating from other mountain regions, e.g. the Himalayan Impatiens glandulifera, have their localities only at low elevations, in the Carpathian foothills. In most cases, alien plant species migrate into the Carpathians from the lowlands. The river valleys provide the migration corridors used by alien species in the course of their progress into new territories of the upper mountain localities. The situation along some mountain rivers, where invasive alien species dominate the native vegetation, is dramatic. Their spread is facilitated not only by easy diaspore transport but also by some anthropogenic factors, such as, river engineering and the transformation of riparian habitats and progressing devastation. Currently, we can observe some invasive alien plants Ñin statu nascendiî, developing a new, secondary range in the Carpathians (e.g. Chaerophyllum aureum) or at the foothills, along the Wis≥a (Vistula) and San river valleys (e.g. Eragrostis albensis). For some species, cities were the destination for the first stage of future migration, e.g. Acer negundo. In the Carpathians, where many national parks and nature reserves are located, the continuous monitoring of the spread of invasive alien plants should be one of the principal activities of botanists

Comparison of indoor/outdoor, RSSI-based positioning using 433, 868 or 2400 MHz ISM bands

This paper compares accuracy of indoor positioning systems using one of three selected ISM bands: 433, 868 or 2400 MHz. Positioning is based on Received Signal Strength Indication (RSSI), received by majority of ISM RF modules, including low-cost ones. Investigated environment is single, indoor space (e.g. office, hall) and personal use, thus 2-dimensional (2D) coordinate system is used. Obtained results, i.a. average positioning error, are compared with similar measurements taken at outdoor, open space environment. The system is local, i.e. its operational area is limited by range of used RF modules – typical a few tens of meters. The main focus is research of how much accuracy (and usefulness) can be expected from standard RF modules working at typical ISM frequencies

Taxonomist - Bogumił Pawłowski (1898-1971)

Despite a signifi cant progress in the development of taxonomic research methods which are presently dominated by molecular methods, it is the specifi c man’s talent which is decisive for work quality in the fi eld of taxonomy. The variety in the world of vascular plants is enormous and it is diffi cult to fi nd the genetically established differences between the populations. It requires a well developed sense of observation and the ability of segregation of multi-trait systems. Professor Bogumił Pawłowski was exactly such a taxonomist showing that specifi c talent. Floristic research in Beskid Sądecki was his school where he recognized the variety of plants in their natural habitats. He was engaged very early by his master Władysław Szafer in creating large works which were necessary for the botany in Poland. He becomes a co-author of the fi rst edition of “Polish Plants” and then he gets engaged in describing subsequent families in the multi-volume “Flora of Poland” which was initiated by Marian Raciborski. He also carries out intensive phytosociological research in the Tatra Mountains, along with his master and colleagues. It gives him the opportunity to recognize the fl ora of those mountains and to discover new species for them. After the II World War he becomes the main initiator of preparations for the second edition of “The Polish Plants”, i.e. the work which was rather new as it covered the post-war territory of Poland, whereby most of the book must have been changed and supplemented. At nearly the same time he works at the probably most important work of his life, i.e. “Flora of the Tatra Mountains” whose fi rst volume covering Pteridophytes, Gymnosperms and Angiosperms, is published in mid fi fties. Unfortunately, the work ended at that point, although the Professor had gathered materials for that during his whole life. In the beginning he is a coeditor, jointly with Władysław Szafer, of subsequent volumes of “The Flora of Poland”, then he becomes its editor himself, and he edits the fi nal volumes together with his disciple Adam Jasiewicz. He works out the whole families or genera for particular volumes. His greatest contribution covers the works on Alchemilla genus, where he is a highly esteemed monographer in the European scale. Those research works were carried out not only in Poland but also in other mountain ranges of our continent. Professor’s position in the fi eld of the European systematics made the editors of “Flora Europaea” engage him as their regional associate, where he works out some particular genera for the fi rst three volumes. Professor Bogumił Pawłowski showed wide interests in the fi eld of taxonomy. He published a number of works, mainly in Polish magazines, in the Latin language which he had mastered perfectly. It is worthwhile to mention the rich herbarium collections in the context of his achievements in the fi eld of systematics. It is a taxonomist’s workshop and, in principle, it will be possible to fully appreciate the Professor’s contribution in the development of taxonomy both in Poland and worldwide, as soon as they have been newly elaborated

Comparison of 2.4 and 5 GHz WLAN network for purpose of indoor and outdoor location

This paper presents comparison of prototype location system built with standard components of 2.4 and 5 GHz WLAN network infrastructure. The system can be used for personal or other objects’ positioning, both for indoor and outdoor environments. The system is local, i.e. its operational area is limited to WLAN network operating range. The system is based on standard and widely available WLAN components (access points, network adapters). The goal is to avoid any hardware and software modifications. Also position calculation should not be power hungry operation. Method of location is based in Received Signal Strength Indication (RSSI) returned by most of RF ICs (including WLAN). The main focus is research of how much accuracy (and usefulness) can be expected from standard WLAN hardware. Both static and dynamic scenarios have been tested and compared