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Proper environmental project management is a significant element in shaping a positive, pro-environmental image of urban agglomerations and adjacent towns. Environmental resource management and protection, as well as spatial planning in accordance with sustainable development principles, are the most important factors in creating a positive image of, and strategies for, cities. An example of a large, innovative environmental project implementation is the Central Sewage Treatment Plant in Kozieglowy, in the agglomeration of Poznan, and its installations and equipment impact assessment studies. Important aspects of the project were mediations, which took place from May 2011, until the end of April 2012.
During a routine inspection of the mosquito fauna in the Košická Basin (Eastern Slovakia), in one of the monitored locations we have caught 4 females of the invasive mosquito Aedes albopictus, using the CO2 baited CDC traps. Occurrence of this particular mosquito has already been reported in many European countries; in Slovakia, however, this is the first finding ever. The finding of Ae. albopictus extends the list of the mosquito fauna in Slovakia to 50 species and Slovakia thus ranks among other 20 European countries where this mosquito was observed. The presence of Ae. albopictus increased the probability of transmission of canine and human dirofilariosis in urban environment.
The process of establishing breeding populations of birds in small towns of Central Europe provides a unique opportunity to study them during synurbization in statu nascendi. Over the years 2006-2011, we investigated the breeding ecology of three coexisting thrush species Turdus spp. in the urban habitats of the town of Bardejov (NE Slovakia). We studied nest distribution, nest predation in relation to nest placement and the breeding success of the Common Blackbird T. merula, Fieldfare T. pilaris and Song Thrush T. philomelos. The study species differed significantly in terms of microhabitat characteristics and vertical spatial distribution, expressed as the nest location height (Blackbird < Song Thrush < Fieldfare), the distance from the town centre (Fieldfare < Song Thrush < Blackbird), the distance from the nest tree to human paths and buildings (Blackbird < Song Thrush < Fieldfare) and the average distance between breeding conspecific pairs (Fieldfare < Blackbird < Song Thrush). We also found significant differences in nesting microhabitats (conifers, deciduous trees and shrubs) usage (breeding in conifers: Song Thrush < Blackbird < Fieldfare). On the other hand, no significant differences were found in breeding success and predation between species. A major factor affecting the predation rate was the distance between nests and the distance to human paths and buildings, and with Fieldfares and Common Blackbirds also the height of trees and the distance to the town centre. Our results suggest that ecological segregation among closely related species can also be common in a changed, urban environment.
The purpose of the studies was to determine, by means of bacteriological and molecular methods, the occurrence of Y. enterocolitica in the faeces of dogs, as well as to assess the degree of their spread in the urban environment. The faeces were collected from the lawns of six large districts of Olsztyn. In order to isolate Y. enterocolitica, "warm culture" (ITC/CIN) and "cold culture" (PSB/CIN) were used in parallel, together with biochemical tests. Next, genomic DNA of Y. enterocolitica was isolated and αil, ystA, and ystB genes were detected with the use of the multiplex PCR method. A relatively frequent occurrence of Y. enterocolitica strains in canine faeces contaminating the urban lawns of Olsztyn was demonstrated. The greatest percentage of contaminated faecal samples was found in the area of large housing estates. By means of molecular tests, the presence of ystB gene only, in the absence of αil and ystA genes, was demonstrated in the Y enterocolitica genome, which could indicate a potentially pathogenic biotype 1A. Therefore, it seems important to keep monitoring the changes, which occur within this species of microorganisms, the epidemiological situation of yersiniosis in human and animal populations, as well as to continue the studies on the epidemiology of Y enterocolitica infections also in the context of a reservoir of animals accompanying a man.
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Lichens as indicators of air pollution in Lomza

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Research using lichens as bioindicators of air pollution has been conducted in the city of Łomża. The presence of indicator species of epiphytic and epilithic lichens has been analysed. A 4-point lichen scale has been developed for the test area, on the basis of which four lichenoindication zones have been determined. The least favourable conditions for lichen growth have been recorded in the city center. Green areas and open spaces are the areas with the most favourable impact of the urban environment on lichen biota.
One of the most important sources of noise pollution in urban areas is traffic noise. The aim of the present study was to determine noise pollution in the different parts of Yazd city in 2010 and to compare them with current standard levels. In total, 135 samples were obtained from both residential and commercial areas according to the ISO 1996-2002 method in order to measure noise pressure levels. Locations included 10 streets and 5 squares of the city and the measurement times were considered in the morning, afternoon, and the evening. Noise level was determined in A-weighted by sound level meter model 2232. Results showed that the rate of background noise in Yazd city was high, as it was 71,2±4.4, 66.2±3.7, and 60.3±4 in the L₁₀, L₅₀, and L₉₀, respectively. The mean level of maximum noise pressure was 74.3 dB(A) (Lmax), and the mean continuous sound equivalent level was 66.7 dB(A) (Leq). Comparing the noise level obtained in the present study to the standard level, it can be obviously concluded that the noise levels are higher than that of acceptable levels in most parts of the city. So, different preventive countermeasures such as increasing public awareness through educational programs and technical controls for the future development of the city are crucial.
In 2000 and 2002, the same pair of Peregrine Falcons occupied a nest box situated on the highest building within the Warsaw city centre. The nest box was monitored with a video camera and an infrared lamp. Records collected between 20:00 and 4:00 (DST) during the nestling stage (after the first chick hatching to fledging the last one) were used for analysis. Data from 34 nights in 2000 and 21 nights in 2002 were analysed. The majority of night feedings of nestlings was performed between 00:00 and 04:00. The average frequency of feedings was 1.5 events per night. It shows that night feedings can be considered an important part of feeding pattern during nestling period.
Differentiated responses of Erysiphe alphitoides and E. hypophylla in urban conditions are described. The influence of transport pollution on the morphology of the mycelium, chasmotecium development and individual stages of the developmental cycle is discussed.
Urbanised areas are capable of exerting a strong impact on the distribution of genetic diversity within populations of animals. Urban invertebrate species are currently either relicts from pre-urban ecosystems, or have immigrated during or following urbanisation. We analysed 10 microsatellite loci in 196 specimens of the harlequin ladybird (Harmonia axyridis), an invasive species in Poland sampled in three of the country’s cities. Of Asiatic origin, this ladybird has been spreading through other continents, including Europe. Results showed that the Polish cities are being invaded by harlequin ladybirds that are uniform in terms of their genetic pool, with no significant genetic differentiation present between the urban populations investigated. Rapid spread and what are probably the large numbers of individuals colonising new areas allow this species to maintain high genetic diversity and avoid bottleneck effects. However, we suggest that urban populations differ in terms of genetic diversity. The highest genetic diversity characterises the most recently invaded area of Olsztyn in the north of Poland. Genetic data further suggest that this population could be still in an expansion phase. The earliest colonising population in Wrocław exhibits signs of a Wahlund effect, suggesting that gene flow among local groups within this urban area could be disturbed or impaired. We conclude that, in the case of an urban population of the harlequin ladybird, successful colonisation is followed by the onset of a decline in genetic diversity, with isolation between local sampling sites appearing. Further studies are required, however, if this process is to be elucidated.
Fungi of the genus Ampelomyces are the major antagonists of Erysiphales fungi being a significant group of phytopathogens. The hyperparasites attack various developmental stages of powdery mildews. As a result the infested ascomata do not reach the stage of maturity, do not form appendages nor ascospores, which is linked with a reduction of the source of primary infections. Studies conducted so far have mainly been devoted to Ampelomyces fungi application in the biological control of powdery mildews on crops, whilst a few only have been focused on the ecology of these mycoparasites on Erysiphales fungi infecting plants, especially in the urban environment. The present study addresses the natural occurrence and effect of Ampelomyces fungi on the development of ascomata of powdery mildews species. The material was collected in 2005–2009 in several cities of the northeastern Poland. First time ever Ampelomyces spores are reported in mature ascomata of Erysiphales with fully developed appendages. This phenomenon has been observed in the case of two species, viz.: Erysiphe flexuosa on Aesculus spp. and E. vanbruntiana var. sambuci-racemosae on Sambucus racemosa and is presumably linked with improved implementation, propagation and probably better survival during winter months.
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