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Studies on air-borne fungi at Qena. II. Diurnal fluctuations

H M Abdel-Fattah, A H Moubasher, M A Swelim

    Zeitschrift Fur Allgemeine Mikrobiologie
    |January 1, 1981
    PubMed

    Insights

    Airborne fungi show daily cycles, with total counts peaking at 6 a.m. and 6 p.m. Specific genera like Aspergillus, Cladosporium, Penicillium, and Alternaria also exhibit distinct diurnal patterns.

    Area of Science:

    • Environmental Microbiology
    • Aerobiology
    • Mycology

    Background:

    • Airborne fungal spores are ubiquitous environmental components.
    • Understanding their daily fluctuations is crucial for public health and ecological studies.
    • Previous research indicates temporal variations in fungal spore concentrations.

    Purpose of the Study:

    • To investigate the diurnal periodicities of airborne fungi.
    • To identify specific patterns for dominant fungal genera.
    • To establish a baseline for temporal fungal spore dynamics.

    Main Methods:

    • Air sampling conducted over a 24-hour period.
    • Fungal spore identification and quantification using microscopy.
    • Statistical analysis to determine diurnal patterns and peak concentrations.

    Main Results:

    • Total airborne fungi exhibited a bimodal diurnal pattern with peaks at 6 a.m. and 6 p.m.
    • Aspergillus species' activity closely mirrored the total fungal count.
    • Cladosporium showed a primary peak at 6 p.m., while Penicillium and Alternaria displayed observable diurnal activity patterns.

    Conclusions:

    • Airborne fungal concentrations are subject to significant diurnal variations.
    • Specific fungal genera possess distinct daily activity rhythms.
    • These findings contribute to understanding the temporal ecology of airborne fungi.

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