Abstract
Alternaria and Cladosporium are two fungal taxa whose spores (conidia) are included frequently in aerobiological studies of outdoor environments. Both spore types are present in the atmosphere of Malaga (Spain) throughout almost the entire year, although they reach their highest concentrations during spring and autumn. To establish predicting variables for daily and weekly fluctuations, Spearman’s correlations and stepwise multiple regressions between spore concentrations (measured using a volumetric 7-day recorder) and meteorological variables were made with results obtained for both spore types in 1996 and 1997. Correlations and regressions were also made between the different taxa and their concentrations in different years. Significant and positive correlation coefficients were always obtained between spore concentrations of both taxa, followed by temperature, their concentrations in different years, sunshine hours and relative humidity (this last in a negative sense). For the two spore types we obtained higher correlation and regression coefficients using weekly data. We showed different regression models using weekly values. From the results and a practical point of view, it was concluded that weekly values of the atmospheric concentration of Alternaria spores can be predicted from the maximum temperature expected and its concentrations in the years sampled. As regards the atmospheric concentration of Cladoposrium spores, the weekly values can be predicted based on the concentration of Alternaria spores, thus saving the time and effort that would otherwise be employed in counting them by optical microscopy.
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Acknowledgements
The authors acknowledge funding of this project by the Spanish Ministry of Education and Science (AMB97-0457), the Junta de Andalucía Research Group RNM-115 and the help given to the Aerobiology Network of Andalusia (RAA) by the Consejería de Salud and Consejería de Educación of the Junta de Andalucía.
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Recio, M., del Mar Trigo, M., Docampo, S. et al. Analysis of the predicting variables for daily and weekly fluctuations of two airborne fungal spores: Alternaria and Cladosporium . Int J Biometeorol 56, 983–991 (2012). https://doi.org/10.1007/s00484-011-0509-3
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DOI: https://doi.org/10.1007/s00484-011-0509-3