Airborne bacterial communities of outdoor environments and their associated influencing factors

Ruiz-Gil, Tay; Acuña, Jacquelinne J.; Fujiyoshi, So; Tanaka, Daisuke; Noda, Jun; Maruyama, Fumito; Jorquera, Milko A.

doi:10.1016/j.envint.2020.106156

Cited by 133 publications

(76 citation statements)

References 101 publications

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“…Their 4-year study showed that air temperature, dew point, relative humidity, and average wind speed had the greatest influence on the composition of spores in the air [28]. Previous interdisciplinary studies too, including our research, showed that the direction and speed of the wind are one of the most important meteorological factors affecting the formation of aerosols at the water-air interface [29][30][31][32]. In our study, the important meteorological factors affecting airborne spore of Aspergillus sp.…”

Section: Discussionmentioning

confidence: 73%

Mold and Yeast-Like Fungi in the Seaside Air of the Gulf of Gdańsk (Southern Baltic) after an Emergency Disposal of Raw Sewage

Michalska

Kurpas

Zorena

et al. 2021

JoF

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The aim of this study was to determine the correlation between the meteorological factors and the number of molds and yeast-like fungi in the air in the five coastal towns in the years 2014–2017, and in 2018, after emergency disposal of raw sewage to the Gdańsk Gulf. In the years 2014–2018, a total number of 88 air samples were collected in duplicate in the five coastal towns of Hel, Puck, Gdynia, Sopot, and Gdańsk-Brzeźno. After the application of the (PCA) analysis, this demonstrated that the first principal component (PC1) had a positive correlation with the water temperature, wind speed, air temperature, and relative humidity. The second principal component (PC2) had a positive correlation with the relative humidity, wind speed, wind direction, and air temperature. In 2018, potentially pathogenic mold and yeast-like fungi (Candida albicans, Stachybotrys chartarum complex, Aspergillus section Fumigati) were detected in the seaside air. While the detected species were not observed in the years 2014–2017. We suggest that it is advisable to inform residents about the potential health risk in the event of raw sewage disposal into the water. Moreover, in wastewater treatment plants, tighter measures, including wastewater disinfection, should be introduced.

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Section: Discussionmentioning

confidence: 73%

Mold and Yeast-Like Fungi in the Seaside Air of the Gulf of Gdańsk (Southern Baltic) after an Emergency Disposal of Raw Sewage

Michalska

Kurpas

Zorena

et al. 2021

JoF

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“…Interestingly, climatic variables affected Bacteria more than chemical variables, while the opposite was found for Eukarya. This result reflects the susceptibility of bacterial cells to atmospheric conditions 16 , 28 , while eukaryotic cells may mainly correspond to dispersal forms under no additional selective pressures 13 . Based on these findings, we simulated the outcome of future climatic scenarios.…”

Section: Discussionmentioning

confidence: 84%

“…Seasonality is a feature of the airborne microbiome 14 , 16 , 30 . Our baseline (RCP2.6) predictions of richness are compatible with the seasonal richness reported by 14 , only with minor changes (higher autumn richness for Eukarya).…”

Section: Discussionmentioning

confidence: 99%

“…Indeed, the origin of air masses from marine, terrestrial, or anthropogenic-impacted environments, mainly shapes the atmospheric air microbiome 14 . However, recent studies have shown that meteorological factors and seasonality influence the composition of airborne bacterial communities 14 – 16 . This evidence suggests that climatic conditions may act as an environmental filter for the aeroplankton, selecting a subset of species from the regional pool, and raises the question of the relative importance of the different factors affecting both bacterial and eukaryal aeroplankton.…”

Section: Introductionmentioning

confidence: 99%

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General decline in the diversity of the airborne microbiota under future climatic scenarios

Ontiveros

Cáliz

Triadó‐Margarit

et al. 2021

Sci Rep

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Microorganisms attached to aerosols can travel intercontinental distances, survive, and further colonize remote environments. Airborne microbes are influenced by environmental and climatic patterns that are predicted to change in the near future, with unknown consequences. We developed a new predictive method that dynamically addressed the temporal evolution of biodiversity in response to environmental covariates, linked to future climatic scenarios of the IPCC (AR5). We fitted these models against a 7-year monitoring of airborne microbes, collected in wet depositions. We found that Bacteria were more influenced by climatic variables than by aerosols sources, while the opposite was detected for Eukarya. Also, model simulations showed a general decline in bacterial richness, idiosyncratic responses of Eukarya, and changes in seasonality, with higher intensity within the worst-case climatic scenario (RCP 8.5). Additionally, the model predicted lower richness for airborne potential eukaryotic (fungi) pathogens of plants and humans. Our work pioneers on the potential effects of environmental variability on the airborne microbiome under the uncertain context of climate change.

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“…Furthermore, atmospheric factors regulating the airborne microbiome communities at the local and global levels can serve as microbial indicators of specific bioaerosol sources and seasonality, and need to be demonstrated in different environments. Ruiz-Gil et al [ 15 ] summarized and discussed recent advances in the study of airborne bacterial communities in outdoor environments, and the possible factors influencing their abundance, diversity, and seasonal variation. They also underlined how a more in-depth knowledge of the atmospheric microbiome of a particular region or country can contribute to implement new investigations focused on microbial ecology and the design of efficient regulations and policies for environmental protection and public health.…”

Section: Introductionmentioning

confidence: 99%

Seasonal Variability of the Airborne Eukaryotic Community Structure at a Coastal Site of the Central Mediterranean

Fragola

Perrone

Alifano

et al. 2021

Toxins

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The atmosphere represents an underexplored temporary habitat for airborne microbial communities such as eukaryotes, whose taxonomic structure changes across different locations and/or regions as a function of both survival conditions and sources. A preliminary dataset on the seasonal dependence of the airborne eukaryotic community biodiversity, detected in PM10 samples collected from July 2018 to June 2019 at a coastal site representative of the Central Mediterranean, is provided in this study. Viridiplantae and Fungi were the most abundant eukaryotic kingdoms. Streptophyta was the prevailing Viridiplantae phylum, whilst Ascomycota and Basidiomycota were the prevailing Fungi phyla. Brassica and Panicum were the most abundant Streptophyta genera in winter and summer, respectively, whereas Olea was the most abundant genus in spring and autumn. With regards to Fungi, Botrytis and Colletotrichum were the most abundant Ascomycota genera, reaching the highest abundance in spring and summer, respectively, while Cryptococcus and Ustilago were the most abundant Basidiomycota genera, and reached the highest abundance in winter and spring, respectively. The genus community structure in the PM10 samples varied day-by-day, and mainly along with the seasons. The impact of long-range transported air masses on the same structure was also proven. Nevertheless, rather few genera were significantly correlated with meteorological parameters and PM10 mass concentrations. The PCoA plots and non-parametric Spearman’s rank-order correlation coefficients showed that the strongest correlations generally occurred between parameters reaching high abundances/values in the same season or PM10 sample. Moreover, the screening of potential pathogenic fungi allowed us to detect seven potential pathogenic genera in our PM10 samples. We also found that, with the exception of Panicum and Physcomitrella, all of the most abundant and pervasive identified Streptophyta genera could serve as potential sources of aeroallergens in the studied area.

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Airborne bacterial communities of outdoor environments and their associated influencing factors

Cited by 133 publications

References 101 publications

Mold and Yeast-Like Fungi in the Seaside Air of the Gulf of Gdańsk (Southern Baltic) after an Emergency Disposal of Raw Sewage

Mold and Yeast-Like Fungi in the Seaside Air of the Gulf of Gdańsk (Southern Baltic) after an Emergency Disposal of Raw Sewage

General decline in the diversity of the airborne microbiota under future climatic scenarios

Seasonal Variability of the Airborne Eukaryotic Community Structure at a Coastal Site of the Central Mediterranean

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