Journal ArticleDOI
Model for forecasting Olea europaea L. airborne pollen in South-West Andalusia, Spain.
Carmen Galán,Paloma Cariñanos,Herminia García-Mozo,Purificación Alcázar,Eugenio Domínguez-Vilches +4 more
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TLDR
The results of the multiple regression analysis show that the variables exerting the greatest influence on the pollen index were rainfall in March and temperatures over the months prior to the flowering period, while temperature proved the best variable for this prediction.Abstract:
Data on predicted average and maximum airborne pollen concentrations and the dates on which these maximum values are expected are of undoubted value to allergists and allergy sufferers, as well as to agronomists. This paper reports on the development of predictive models for calculating total annual pollen output, on the basis of pollen and weather data compiled over the last 19 years (1982–2000) for Cordoba (Spain). Models were tested in order to predict the 2000 pollen season; in addition, and in view of the heavy rainfall recorded in spring 2000, the 1982–1998 data set was used to test the model for 1999. The results of the multiple regression analysis show that the variables exerting the greatest influence on the pollen index were rainfall in March and temperatures over the months prior to the flowering period. For prediction of maximum values and dates on which these values might be expected, the start of the pollen season was used as an additional independent variable. Temperature proved the best variable for this prediction. Results improved when the 5-day moving average was taken into account. Testing of the predictive model for 1999 and 2000 yielded fairly similar results. In both cases, the difference between expected and observed pollen data was no greater than 10%. However, significant differences were recorded between forecast and expected maximum and minimum values, owing to the influence of rainfall during the flowering period.read more
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Quercus pollen season dynamics in the Iberian peninsula: response to meteorological parameters and possible consequences of climate change.
Herminia García-Mozo,Carmen Galán,Victoria Jato,Jordina Belmonte,C. Díaz de la Guardia,D. Fernández,M. Gutiérrez,María Jesús Aira,Joan Maria Roure,L. Ruiz,María del Mar Trigo,Eugenio Domínguez-Vilches +11 more
TL;DR: Results indicate that under a doubled CO(2) scenario at the end of the 21st century Quercus pollination season could start on average one month earlier and airborne pollen concentrations will increase by 50 % with respect to current levels, with higher values in Mediterranean inland areas.
Journal ArticleDOI
The allergen Bet v 1 in fractions of ambient air deviates from birch pollen counts.
Jeroen Buters,Ingrid Weichenmeier,S. Ochs,G. Pusch,Wolfgang G. Kreyling,A. J. F. Boere,Wolfgang Schober,Heidrun Behrendt +7 more
TL;DR: The allergen Bet v 1 in fractions of ambient air deviates from birch pollen counts as well as other environmental parameters such as temperature, humidity, and particle counts.
Journal ArticleDOI
Changes in the pollen seasons of the early flowering trees Alnus spp. and Corylus spp. in Worcester, United Kingdom, 1996-2005.
TL;DR: Insight is provided to the variation in the seasons for these early flowering trees and will form a basis for future work on building predictive models for these taxa.
Journal ArticleDOI
Forecasting airborne pollen concentration time series with neural and neuro-fuzzy models
M José Luis Aznarte,José Manuel Benitez Sánchez,Diego Nieto Lugilde,Concepción de Linares Fernández,Consuelo Díaz de la Guardia,Francisca Alba Sánchez +5 more
TL;DR: Experimental results show an advantage of the neuro-fuzzy models against classical statistical methods, although there is still room for improvement.
Journal ArticleDOI
Plant phenological modeling and its application in global climate change research: overview and future challenges
Meifang Zhao,Changhui Peng,Changhui Peng,Wenhua Xiang,Xiangwen Deng,Dalun Tian,Xiaolu Zhou,Guirui Yu,Honglin He,Zhonghui Zhao +9 more
TL;DR: In this article, the seasonality of plant phenology has been considered as a sensitive indicator of climate change. But, the authors did not consider the effect of seasonal changes in plant phenologies.
References
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Journal ArticleDOI
An automatic volumetric spore trap
TL;DR: Estimates of spore content of the air can be made, with higher efficiency than by previous traps, at different times of day and thus be more closely correlated with variations in weather.
Journal ArticleDOI
The role of temperature in the onset of the Olea europaea L. pollen season in southwestern Spain.
Carmen Galán,Herminia García-Mozo,Paloma Cariñanos,Purificación Alcázar,Eugenio Domínguez-Vilches +4 more
TL;DR: Different methods of obtaining the best-forecast model for the onset date of the O. europaea pollen season, using temperature as the predictive parameter are proposed in this paper.
Journal ArticleDOI
Pollen-related allergy in the European Mediterranean area
G. D'amato,G. Liccardi +1 more
TL;DR: There is a body of evidence which suggests that the frequency of atopic diseases—particularly those induced by pollen allergens (rhinoconjunctlvitis and/or bronchial aslhma)—^is increasing because of interaction with air pollution; in fact, atopic disease have become more common during the past two decades.
Journal ArticleDOI
The Role of Chilling in Releasing Olive Floral Buds from Dormancy
Luis Rallo,G.C. Martin +1 more
Journal ArticleDOI
High levels of Olea europaea pollen and relation with clinical findings.
J. Fernando Florido,P. Gonzalez Delgado,B. Saenz de San Pedro,Joaquín Quiralte,J.M. Arias de Saavedra,V. Peralta,L. Ruiz Valenzuela +6 more
TL;DR: Local conditions with a wide area dedicated to olive tree cultivars result in a high concentration of this pollen in the atmosphere, and monosensitized Olea patients in this area seem to need exceptionally high levels to suffer from allergic symptoms.