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Título
Effect of prevailing winds and land use on Alternaria airborne spore load
Autor
Facultad/Centro
Área de conocimiento
Título de la revista
Journal of Environmental Management
Datos de la obra
Rodríguez-Fernández, A., Blanco-Alegre, C., Vega-Maray, A. M., Valencia-Barrera, R. M., Molnár, T., & Fernández-González, D. (2023). Effect of prevailing winds and land use on Alternaria airborne spore load. Journal of Environmental Management, 332. https://doi.org/10.1016/J.JENVMAN.2023.117414
Editor
Elsevier
Fecha
2023
ISSN
0301-4797
Resumo
[EN] Alternaria spores are a common component of the bioaerosol. Many Alternaria species are plant pathogens, and
their conidia are catalogued as important aeroallergens. Several aerobiological studies showing a strong relationship
between concentrations of airborne spore and meteorological parameters have consequently been
developed. However, the Alternaria airborne load variation has not been thoroughly investigated because it is
difficult to assess their sources, as they are a very common and widely established phytopathogen. The objective
of this study is to estimate the impact of vegetation and land uses as potential sources on airborne spore load and
to know their influence, particularly, in cases of long-medium distance transport. The daily airborne spore
concentration was studied over a 5-year period in Le´on and Valladolid, two localities of Castilla y Le´on (Spain),
with differences in their bioclimatic and land use aspects. Moreover, the land use analysis carried out within a 30
km radius of each monitoring station was combined with air mass data in order to search for potential emission
sources. The results showed a great spatial variation between the two areas, which are relatively close to each
other. The fact that the spore concentrations recorded in Valladolid were higher than those in Le´on was owing to
prevailing winds originating from large areas covered by cereal crops, especially during the harvest period.
However, the prevailing winds in Le´on came from areas dominated by forest and shrubland, which explains the
low airborne spore load, since the main Alternaria sources were the grasslands located next to the trap.
Furthermore, the risk days in this location presented an unusual wind direction. This study reveals the importance
of land cover and wind speed and direction data for establishing potential airborne routes of spore
transport in order to improve the Alternaria forecasting models. The importance of conducting Alternaria aerobiological
studies at a local level is also highlighted.
Materia
Palabras clave
Peer review
SI
ID proyecto
- info:eu-repo/grantAgreement/AEI/ Programa Estatal de Generación de Conocimiento y Fortalecimiento Científico y Tecnológico del Sistema de I+D+i/ PID2019-106164RB-I00/ES/ RELACION ENTRE EL BIOAEROSOL Y OTROS CONTAMINANTES: EFECTOS SOBRE LAS RESPUESTAS ALERGICAS EN DIFERENTES ESCENARIOS ATMOSFERICOS
URI
DOI
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