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  • 1
    Electronic Resource
    Electronic Resource
    Bioclimatic factors affecting daily Cupressaceae flowering in southwest Spain (1998)
    Springer
    International journal of biometeorology 41 (1998), S. 95-100 
    Details
    ISSN: 1432-1254
    Keywords: Key words Cupressaceae airborne pollen ; Biometeorology ; Allergenic pollen ; Pollen forecast
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geography , Physics
    Notes: Abstract  Daily variations in Cupressaceae pollen counts were analysed, together with climatic variables in the southwest of Spain, in order to understand the bioclimatic variables affecting Cupressaceae flowering in a Mediterranean climate. The study was carried out using the Spanish Aerobiology Network recommendations, using a Burkard Hirst-type spore trap. Regression analyses were applied to the pollen counts of the winter months of 13 consecutive years. The regression analysis applied to each year indicated that temperature is the most important variable to include in the model. Temperature affected the pollen counts differently according to the yearly climatic trend. During the coldest years, pollen counts depended on the minimum temperature, while in the warmest ones they were affected by higher temperatures. However, during the driest years, pollen counts depended more on the humidity level, while in the wettest years they depended more on the hours of sunshine.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004840050059
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Conidia of Alternaria in the atmosphere of the city of Cordoba, Spain in relation to meteorological parameters (1999)
    Springer
    International journal of biometeorology 43 (1999), S. 45-49 
    Details
    ISSN: 1432-1254
    Keywords: Key words  Alternaria ; Aerobiology ; Airborne spores ; Volumetric sampling ; Intradiurnal variation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geography , Physics
    Notes: Abstract  In this study, we have analyzed the presence of conidia belonging to different species of the genus Alternaria in the atmosphere of the city of Cordoba, using a Hirst sampler. The results show that spores of this genus are present all year, with a clear seasonal pattern which shows two peaks, one in spring and the other in fall. A total of 26,822 conidia/m3 have been sampled, which implies a daily mean of 74.3 conidia/m3. Statistical analyses comparing the data with meteorological parameters show a positive correlation with maximum, minimum and mean temperatures, and a negative correlation with rain. Nevertheless, meteorological parameters seem to affect the number of conidia differently according to the season of the year. Regression analyses carried out in order to obtain a predictive pattern show that the best fit is between the 7-day running mean of the number of conidia and a week’s accumulated mean temperature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004840050115
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Comparison of two pollen counting methods of slides from a hirst type volumetric trap (2000)
    Springer
    Aerobiologia 16 (2000), S. 339-346 
    Details
    ISSN: 1573-3025
    Keywords: aerobiology ; methodology ; slide counting methods
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Two of the most frequently used methods of pollen counting on slides from Hirst type traps are evaluated in this paper: the transverse traverse method and the longitudinal traverse method. The study was carried out during June–July 1996 and 1997 on slides from a trap at Worcester, UK. Three pollen types were selected for this purpose: Poaceae, Urticaceae and Quercus. The statistical results show that the daily concentrations followed similar trends (p 〈 0.01, R-values between 0.78–0.96) with both methods during the two years, although the counts were slightly higher using the longitudinal traverses method. Significant differences were observed, however, when the distribution of the concentrations during 24 hour sampling periods was considered. For more detailed analysis, the daily counts obtained with both methods were correlated with the total number of pollen grains for the taxon over the whole slide, in two different situations: high and low concentrations of pollen in the atmosphere. In the case of high concentrations, the counts for all three taxa with both methods are significantly correlated with the total pollen count. In the samples with low concentrations, the Poaceae and Urticaceae counts with both methods are significantly correlated with the total counts, but none of Quercus counts are. Consideration of the results indicates that both methods give a reasonable approximation to the count derived from the slide as a whole. More studies need be done to explore the comparability of counting methods in order to work towards a Universal Methodology in Aeropalynology.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1026577406912
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  • 4
    Electronic Resource
    Electronic Resource
    Temporal and geographical variations in grass pollen seasons in areas of west0ern Europe: an analysis of season dates at sites of the European pollen information system (2000)
    Springer
    Aerobiologia 16 (2000), S. 373-379 
    Details
    ISSN: 1573-3025
    Keywords: aerobiology ; airborne pollen ; Europe ; European Pollen Information ; Grass Pollen seasons ; Phenology ; start dates
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Geographical and temporal variations in the start dates of grass pollen seasons are described for selected sites of the European Pollen Information Service. Daily average grass pollen counts are derived from Network sites in Finland, the Netherlands, Denmark, United Kingdom, Austria, Italy and Spain, giving a broad longitudinal transect over Western Europe. The study is part of a larger project that also examines annual and regional variations in the severity, timing of the peak and duration of the grass pollen seasons. For several sites, data are available for over twenty years enabling long term trends to be discerned. The analyses show notable contrasts in the progression of the seasons annually with differing lag times occurring between southern and northern sites in various years depending on the weather conditions. The patterns identified provide some insight into geographical differences and temporal trends in the incidence of pollinosis. The paper discusses the main difficulties involved in this type of analysis and notes possibilities for using data from the European Pollen Information service to construct pan European predictive models for pollen seasons.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1026521331503
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Air spore microfungi in dwellings of south of Spain (1992)
    Springer
    Aerobiologia 8 (1992), S. 245-253 
    Details
    ISSN: 1573-3025
    Keywords: aerobiology ; fungal spores ; indoor air ; microfungi
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Indoor and outdoor airborne microfungi were studied in fourteen homes of Córdoba (Spain) for two years. Samplings were done gravimetrically in three rooms in each home and, for comparison, also outdoors. An overall 128 taxa were identified, which were classified according to their occurrence into occasional, frequent and permanent. No statistically significant quantitative differences were found between the microfungi in each room. On the other hand, there were significant quantitative differences between indoor and outdoor microfungi. Spores occurred at their maximum concentrations in spring. Finally,Aspergillus andCladosporium were found to be the most abundant genera indoors and outdoors, respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02071633
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    Paper (German National Licenses)
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