RT Journal Article T1 Environmental drivers of the seasonal exposure to airborne Alternaria spores in Spain. A1 Picornell Rodríguez, Antonio A1 Rojo, Jesús A1 Trigo-Pérez, María del Mar A1 Ruiz-Mata, Rocío A1 Lara, Beatriz A1 Romero-Morte, Jorge A1 Serrano-García, Alicia A1 Pérez-Badia, Rosa A1 Gutiérrez-Bustillo, Montserrat A1 Cervigón-Morales, Patricia A1 Ferencova, Zuzana A1 Morales-González, Julia A1 Sánchez-Reyes, Estefanía A1 Fuentes-Antón, Sergio A1 Sánchez-Sánchez, José A1 Dávila, Ignacio A1 Oteros, Jose A1 Martínez-Bracero, Moisés A1 Galán, Carmen A1 García-Mozo, Herminia A1 Alcázar, Purificación A1 Fernández, Santiago A1 González-Alonso, Mónica A1 Robles, Estrella A1 Pérez de Zabalza, Anabel A1 Ariño, Arturo H. A1 Recio-Criado, María Marta K1 Hongos - Esporas K1 Alergia K1 Ascomicetes - Variaciones estacionales - España AB Alternaria conidia have high allergenic potential and they can trigger important respiratory diseases. Due to that and to their extensive detection period, airborne Alternaria spores are considered as a relevant airborne allergenic particle. Several studies have been developed in order to predict the human exposure to this aeroallergen and to prevent their negative effects on sensitive population. These studies revealed that some sampling locations usually have just one single Alternaria spore season while other locations generally have two seasons within the same year. However, the reasons of these two different seasonal patterns remain unclear. To understand them better, the present study was carried out in order to determine if there are any weather conditions that influence these different behaviours at different sampling locations. With this purpose, the airborne Alternaria spore concentrations of 18 sampling locations in a wide range of latitudinal, altitudinal and climate ranges of Spain were studied. The aerobiological samples were obtained by means of Hirst-Type volumetric pollen traps, and the seasonality of the airborne Alternaria spores were analysed. The optimal weather conditions for spore production were studied, and the main weather factor affecting Alternaria spore seasonality were analysed by means of random forests and regression trees. The results showed that the temperature was the most relevant variable for the Alternaria spore dispersion and it influenced both the spore integrals and their seasonality. The water availability was also a very significant variable. Warmer sampling locations generally have a longer period of Alternaria spore detection. However, the spore production declines during the summer when the temperatures are extremely warm , what splits the favourable period for Alternaria spore production and dispersion into two separate ones, detected as two Alternaria spore seasons within the same year. PB Elsevier YR 2022 FD 2022-02-02 LK https://hdl.handle.net/10630/33119 UL https://hdl.handle.net/10630/33119 LA eng NO Picornell, A., Rojo, J., Trigo, M.M., Ruiz-Mata, R., Lara, B., Romero-Morte, J., Serrano-García, A., Pérez-Badía, R., Gutiérrez-Bustillo, M., Cervigón-Morales, P., Ferencova, Z., Morales-González, J., Sánchez-Reyes, E., Fuentes-Antón, S., Sánchez-Sánchez, J., Dávila, I., Oteros, J., Martínez-Bracero, M., Galán, C., García-Mozo, H., Alcázar, P., Fernández, S., González-Alonso, M., Robles, E., Pérez de Zabalza, A., Ariño, A.H., Recio, M., 2022. Environmental drivers of the seasonal exposure to airborne Alternaria spores in Spain. Science of The Total Environment 823, 153596. NO This work was partially financed by the Ministry of Science and Innovation of Spain and FEDER fundings inside the Operational Plurirregional Program of Spain 2014-2020 and the Operational Program of Smart Growing (Project Environmental and Biodiversity Climate Change Lab, EnBiC2-Lab). This work counted also with the economical support of the Spanish Ministry of Economy and Competitiveness [project CGL2014-54731-R]; the Ministry of Science and Innovation [project RTI2018-096392-B-C22]; the Junta de Andalucía [contract 8.06/503.4764]; the Area of Environment and Sustainability of the Malaga City Council [contracts 8.06/5.03.4721 and 8.07/5.03.5159]; the Junta Comunidades de Castilla-La Mancha, which provides financial support for the Castilla-La Mancha Aerobiology Network (AEROCAM); and the financial support of Health Department of Madrid region (Consejería de Sanidad de Comunidad de Madrid) to the palynological network PALINOCAM. The pollen trap installed in Sierra de las Nieves was funded by the Herbarium MGC of the SCAI (Central Services of Research Support) of the University of Malaga under the agreement signed between the Junta de Andalucía and the University of Malaga [contract 8.07/5.034764]. Antonio Picornell was supported by a predoctoral grant financed by the Spanish Ministry of Education, Culture and Sport, in the Program for the Promotion of Talent and its Employability [grant number FPU15/01668]. Navarra sampling locations were supported by the Navarra Institute of Public and Occupational Health (ISPLN) with funding from the LIFE+NADAPTA project. Valladolid and Salamanca sampling locations were supported by the Regional Health Authority, Junta of Castile and León, Spain [Project GRS 1862/A/18]. Seville sampling location was supported by the Project MEC I+D+I CGL2009-10683. DS RIUMA. Repositorio Institucional de la Universidad de Málaga RD 20 ene 2026