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Seasonal shift in airborne microbial communities
Tignat-Perrier, R.; Dommergue, A.; Thollot, A.; Magand, O.; Amato, P.; Joly, M.; Sellegri, K.; Vogel, T.M.; Larose, C. (2020). Seasonal shift in airborne microbial communities. Sci. Total Environ. 716: 137129. https://dx.doi.org/10.1016/j.scitotenv.2020.137129
In: Science of the Total Environment. Elsevier: Amsterdam. ISSN 0048-9697; e-ISSN 1879-1026, meer
|  |
| Author keywords |
Atmospheric microorganisms, Bioaerosols, Planetary boundary layer, Amplicon sequencing, Biosphere-atmosphere interactions |
| Auteurs | | Top |
- Tignat-Perrier, R.
- Dommergue, A.
- Thollot, A.
|
- Magand, O.
- Amato, P.
- Joly, M.
|
- Sellegri, K.
- Vogel, T.M.
- Larose, C.
|
| Abstract |
Microorganisms are ubiquitous in the atmosphere. Global investigations on the geographical and temporal distribution of airborne microbial communities are critical for identifying the sources and the factors shaping airborne communities. At mid-latitude sites, a seasonal shift in both the concentration and diversity of airborne microbial communities has been systematically observed in the planetary boundary layer. While the factors suspected of affecting this seasonal change were hypothesized (e.g., changes in the surface conditions, meteorological parameters and global air circulation), our understanding on how these factors influence the temporal variation of airborne microbial communities, especially at the microbial taxon level, remains limited. Here, we investigated the distribution of both airborne bacterial and fungal communities on a weekly basis over more than one year at the mid-latitude and continental site of puy de Dôme (France; +1465 m altitude above sea level). The seasonal shift in microbial community structure was likely correlated to the seasonal changes in the characteristics of puy de Dôme's landscape (croplands and natural vegetation). The airborne microbial taxa that were the most affected by seasonal changes trended differently throughout the seasons in relation with their trophic mode. In addition, the windy and variable local meteorological conditions found at puy de Dôme were likely responsible for the intraseasonal variability observed in the composition of airborne microbial communities. |
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