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Characterization of fungal spores in ambient particulate matter: A study from the Himalayan region
https://orcid.org/0000-0002-3603-3619
AbstractFungal spores as a constituent of ambient particulate matter (PM) is of concern; they not only display the physical traits of a particle, but are also potential allergens and health risk. An investigation over fourteen month was undertaken at a rural site located in the Western Himalayan region, to evaluate the PM associated fungal spores' concentration and diversity. The season-wise change in the fungal spores concentration in the Coarse Particulate Matter (CPM) fraction (aerodynamic diameter > 10 μm) varied from 500 to 3899 spores m−3. Their average concentration over 14 months was 1517 spores m−3. Significant diversity of fungal spores in the CPM samples was observed; 27 individual genera of fungal spores were identified, of which many were known allergens. Presence of Ascomycota and Basidiomycota fungal spores was dominant in the samples; ∼20% of the spores were un-characterized. The season-wise variability in fungal spores showed a statistically significant high correlation with CPM load. Maximum number concentration of the spores in CPM was recorded in the summer, while minimum in the winter. The high diversity of spores occurred during monsoon and post monsoon months. The meteorological factors played an important role in the fungal spores’ distribution profile. The temporal profile of the spores showed significant correlation with the ambient temperature (T), relative humidity (RH), wind speed (WS) and planetary boundary layer (PBL) height. Strong correlation of WS with fungal spores and CPM, and wind back trajectories suggest that re-suspension and wind assisted transport of PM contributes to ambient CPM associated fungal spores.
HighlightsProfiling PM2.5, PM10 and CPM aerosol over 14 months in the Western Himalayas.Characterization of fungal spores' diversity and variability in CPM (>10μ) load.Allergic fungal spores in CPM load display statistically high correlations.Positive correlation of CPM and fungal spores with planetary boundary height.Origin of CPM-spores from surface deposits re-suspension and convective upliftment.
Characterization of fungal spores in ambient particulate matter: A study from the Himalayan region
https://orcid.org/0000-0002-3603-3619
AbstractFungal spores as a constituent of ambient particulate matter (PM) is of concern; they not only display the physical traits of a particle, but are also potential allergens and health risk. An investigation over fourteen month was undertaken at a rural site located in the Western Himalayan region, to evaluate the PM associated fungal spores' concentration and diversity. The season-wise change in the fungal spores concentration in the Coarse Particulate Matter (CPM) fraction (aerodynamic diameter > 10 μm) varied from 500 to 3899 spores m−3. Their average concentration over 14 months was 1517 spores m−3. Significant diversity of fungal spores in the CPM samples was observed; 27 individual genera of fungal spores were identified, of which many were known allergens. Presence of Ascomycota and Basidiomycota fungal spores was dominant in the samples; ∼20% of the spores were un-characterized. The season-wise variability in fungal spores showed a statistically significant high correlation with CPM load. Maximum number concentration of the spores in CPM was recorded in the summer, while minimum in the winter. The high diversity of spores occurred during monsoon and post monsoon months. The meteorological factors played an important role in the fungal spores’ distribution profile. The temporal profile of the spores showed significant correlation with the ambient temperature (T), relative humidity (RH), wind speed (WS) and planetary boundary layer (PBL) height. Strong correlation of WS with fungal spores and CPM, and wind back trajectories suggest that re-suspension and wind assisted transport of PM contributes to ambient CPM associated fungal spores.
HighlightsProfiling PM2.5, PM10 and CPM aerosol over 14 months in the Western Himalayas.Characterization of fungal spores' diversity and variability in CPM (>10μ) load.Allergic fungal spores in CPM load display statistically high correlations.Positive correlation of CPM and fungal spores with planetary boundary height.Origin of CPM-spores from surface deposits re-suspension and convective upliftment.
Characterization of fungal spores in ambient particulate matter: A study from the Himalayan region
https://orcid.org/0000-0002-3603-3619
AbstractFungal spores as a constituent of ambient particulate matter (PM) is of concern; they not only display the physical traits of a particle, but are also potential allergens and health risk. An investigation over fourteen month was undertaken at a rural site located in the Western Himalayan region, to evaluate the PM associated fungal spores' concentration and diversity. The season-wise change in the fungal spores concentration in the Coarse Particulate Matter (CPM) fraction (aerodynamic diameter > 10 μm) varied from 500 to 3899 spores m−3. Their average concentration over 14 months was 1517 spores m−3. Significant diversity of fungal spores in the CPM samples was observed; 27 individual genera of fungal spores were identified, of which many were known allergens. Presence of Ascomycota and Basidiomycota fungal spores was dominant in the samples; ∼20% of the spores were un-characterized. The season-wise variability in fungal spores showed a statistically significant high correlation with CPM load. Maximum number concentration of the spores in CPM was recorded in the summer, while minimum in the winter. The high diversity of spores occurred during monsoon and post monsoon months. The meteorological factors played an important role in the fungal spores’ distribution profile. The temporal profile of the spores showed significant correlation with the ambient temperature (T), relative humidity (RH), wind speed (WS) and planetary boundary layer (PBL) height. Strong correlation of WS with fungal spores and CPM, and wind back trajectories suggest that re-suspension and wind assisted transport of PM contributes to ambient CPM associated fungal spores.
HighlightsProfiling PM2.5, PM10 and CPM aerosol over 14 months in the Western Himalayas.Characterization of fungal spores' diversity and variability in CPM (>10μ) load.Allergic fungal spores in CPM load display statistically high correlations.Positive correlation of CPM and fungal spores with planetary boundary height.Origin of CPM-spores from surface deposits re-suspension and convective upliftment.
Characterization of fungal spores in ambient particulate matter: A study from the Himalayan region
Kumar, Ajay (author) / Attri, Arun K. (author)
Atmospheric Environment ; 142 ; 182-193
2016-07-23
12 pages
Article (Journal)
Electronic Resource
English
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