Ograniczanie wyników

Czasopisma help
Autorzy help
Lata help
Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 263

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 14 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych:  Lublin city
help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 14 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
In Lublin City two localities of Steatoda triangulosa were detected. This expansive, synanthropic spider has not been recorded previously in Poland. Observations indicate that the specimens came from small but the indigenous populations, found in one of large garden-shopping centers in Lublin.
Old avenues, or alleys of trees, form an important part of the cultural landscape. They used to be planted mainly in gardens and parks; later, they started playing an even more important role, particularly in the open areas, and within urban landscapes. Nowadays, they are frequently regarded as inconvenient formations, which exert a negative impact on traffic and impede road construction. However, it is is worth bearing in mind that avenues play a number of crucial functions in terms of climate, ecology and aesthetics, and as such they deserve particular care. The article is devoted to the linden trees planted in an avenue layout along the Nałęczowska street in Lublin town in Poland. The layout currently consists of 85 individual trees in varying health condition, that is, 35% of healthy trees, nearly half exhibiting signs of reduced vitality, and 16% in the state of advanced decay.
Subject and purpose of work: The aim of the paper is to present and evaluate tourist products created in Perła - Browary Lubelskie S.A. Materials and methods: The research used the technique of a diagnostic survey based on a standardized direct interview. The interview was conducted among 311 tourists visiting Perła Brewery in 2017. The research was supplemented by the method of observation and a direct interview with the Perła Apartment manager. Results: The activity of the Perła Cinema (80,26%) and the functioning of the underground tourist route (66,81%) were highly assessed. Tourists appreciate the atmosphere of sightseeing (75,66%) and professional guides (69,03%). Conclusions: Perła – Browary Lubelskie S.A. is an example of a company that can reconcile production functions with tourism and culture. By making an underground tour available to visitors and organizing a free outdoor cinema, it promotes its products and strengthens the brand awareness among customers.
Observations on the aphid number were carried out in the years 2001–2003, simultaneously in four different sites. In each of these three shrubs were marked: of park rose ‘Grandhotel’, rugosa rose, multiflorous rose and five shrubs of border roses of various cultivars. The purpose of these study was to conduct a quantitative analysis of the aphid fauna colonizing roses growing in various types of city green areas. As a result of studies conducted the occurrence of 10 aphid species was found out on the analyzed shrubs. No significant differences were observed in the species composition of aphids colonizing roses growing in various types of city green areas. The studies showed significant differences in the aphid number between the analyzed sites. The road and street sites on the one hand and the road and housing estate ones on the other were most similar regarding the number of aphids.
Studies on the population dynamics of aphids Cinara juniperi De Geer on the shrubs of Juniperus communis L. in the urban conditions of Lublin were conducted in the years 2002–2004 in two types of sites: a street one and a park one. The first individuals of this species were most frequently observed at the turn of April and May, while the maximum population was found in the first half of May. The course of the weather conditions affected the population dynamics of aphids. Those insects were observed in much bigger numbers on the shrubs growing in the street site. The preying of C. juniperi caused browning and drying out of the needles and inhibition of the stem growth, which had an influence on lower decorative character of the examined plants.
Grasses' pollen produces allergens, which are the main cause of pollinosis in Poland and in many countries of Europe. In Poland the beginning of season falls in different days of May. Pollen monitoring was carried out in Lublin by volumetric method in years 2001-2004 by means of Lanzoni VPPS 2000 trap. Start of grass pollen season was marked by methods 98 % and Ʃ 75 as well as by the Clot's method. Differences between them ranged from 1 to 7 days. The most approximate deadlines of beginning of pollen season were qualified according to methods 98 % and the Clot's one, except year 2002. It was defined the pollen season in Lublin begins between 5. and 21. of May. In that study impact of meteorological factors on the beginning dates of pollen seasons was estimated. It was stated statistically positive, essential correlation among the beginning of season and the daily mean, the minimum and maximum air temperature.
The aim of the present study was to analyse the Rumex pollen season dynamics in Lublin in 2001-2010 and to find relationships between season parameters and meteorological conditions. This study was carried out by the volumetric method using a Lanzoni VPPS 2000 trap. The start and end dates of each season were determined based on the 98% method. The effects of meteorological factors on the Rumex pollen seasons were analysed by employing Spearman’s correlation test. On average, the sorrel pollen season started on 13 May (±7 days), ended on 7 September (±6 days), and lasted nearly four months (±9 days). The highest pollen concentrations were recorded in June and July. A significantly negative correlation was found between season duration and Seasonal Pollen Index (SPI). During shorter pollen seasons, higher pollen counts were recorded. In all study years, the seasons were right-skewed. The pollen concentration was most strongly correlated with humidity and mean air temperature. The season parameters (onset, end, peak date, peak value, SPI value) were primarily dependent on air temperature before and during the pollen season.
In the study, the biology of fl owering of Ambrosia artemisiifolia L. was investigated and the pattern of the Ambrosia pollen seasons in Lublin in the years 2001-2008 was characterised. The structure of male and female A. artemisiifolia fl owers was observed in cultivated plants under controlled conditions in the 2000 vegetative season. The number of pollen grains produced by the stamen, fl ower, infl orescence and plant was determined. It was shown that in A. artemisiifolia fl owers nonfunctional pistils occurred with a reduced ovary, performing the role of a pollen presenter. The pistils found in female fl owers differed signifi cantly in their morphological features from the pistils in male fl owers. It was calculated that one stamrn produced an average of 3 375 pollen grains, whereas one fl ower 16 875. A plant which produces 20 racemes may release over 420 million pollen grains into the atmosphere. The Ambrosia pollen seasons in particular years had different patterns. In some years, the days of maximum concentration were in the second half of August, in other years in the fi rst half of September. Over the 8-year period, the maximum daily concentration had a mean value of 116 pollen grains in m3 (31-311). Annual total concentrations of Ambrosia pollen grains ranged between 194 and 1200 grains, and it was 523 grains on the average. The pollen seasons were characterised by the occurrence of several-day-long interruptions in the presence of airborne pollen in the atmosphere of Lublin, which may indicate the long-distance transport of Ambrosia pollen.
Parkom w miastach przypisuje się głównie rolę wypoczynkowo-rekreacyjną; nie bez znaczenia jest również funkcja, jaką pełnią w strukturze ekologicznej. Priorytetem w utrzymaniu parków są ich walory kulturowe, substancja historyczna oraz kondycja dendroflory. Niemal całkowicie zaniedbuje się warstwę runa, która jak wykazały przeprowadzone w Lublinie badania, niezależnie od wielkości i położenia ma w większości charakter synantropijny, a podejmowane działania pielęgnacyjne nie poprawiają walorów zarówno przyrodniczych, jak i estetycznych. W runie parków Lublina odnaleziono 174 gatunki, ale tylko w dwóch (Saski, Akademicki) ich liczba przekroczyła 100 gatunków. Wśród zbiorowisk roślinnych dominują murawy deptane lub formy przejściowe zbliżone do łąkowych, synantropijnych oraz okrajkowych. Wyraźnie brakuje nawiązań runa parkowego do zbiorowisk leśnych.
Grass pollen allergens are a frequent cause of pollen allergy in Poland and other European countries. The research on aeroplankton conducted in Lublin since 2001 allows characterization of the course of grass pollen seasons and estimation of the effect of maximum and minimum temperatures, relative air humidity, precipitation and maximum wind velocity on the taxon’s pollen concentration. The gravimetric method was used in the study. During the eight-year research period, the pollen season usually started in the first or second decade of May and, as a rule, it lasted till the end of August, and quite exceptionally, in 2002 and 2008 till mid-August. The mean length of the pollen season was 107 days. The highest grass pollen risk was observed in the 26th and 27th week. The highest annual counts reaching over 3600 pollen grains􀂉 cm-2 were noted in 2008, while in the other study years they ranged from 741 to 1909. The date of the pollen season onset and its course were highly dependent on weather conditions, which was confirmed by the statistical analysis. The greatest significant influence on the pollen season was exerted by maximum temperature, relative air humidity and the maximum wind.
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 14 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.