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    Environmental controls of soil fungal abundance and diversity in Australia's diverse ecosystems

    91309.pdf (6.736Mb)
    Access Status
    Open access
    Authors
    Viscarra Rossel, Raphael
    Yang, Y.
    Bissett, A.
    Behrens, T.
    Dixon, Kingsley
    Nevil, P.
    Li, S.
    Date
    2022
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Viscarra Rossel, R.A. and Yang, Y. and Bissett, A. and Behrens, T. and Dixon, K. and Nevil, P. and Li, S. 2022. Environmental controls of soil fungal abundance and diversity in Australia's diverse ecosystems. Soil Biology and Biochemistry. 170: ARTN 108694.
    Source Title
    Soil Biology and Biochemistry
    DOI
    10.1016/j.soilbio.2022.108694
    ISSN
    0038-0717
    Faculty
    Faculty of Science and Engineering
    School
    School of Molecular and Life Sciences (MLS)
    Funding and Sponsorship
    http://purl.org/au-research/grants/arc/DP210100420
    URI
    http://hdl.handle.net/20.500.11937/91485
    Collection
    • Curtin Research Publications
    Abstract

    Soil fungi are vital for ecosystem functioning, but an understanding of their ecology is still growing. A better appreciation of their ecological preferences and the controls on the composition and distribution of fungal communities at macroecological scales is needed. Here, we used one of the most extensive continental-scale datasets on soil fungi and modelled the relative abundance of dominant fungal phyla and community diversity in Australian soils from forests, grasslands, shrublands, woodlands, and croplands. Across these diverse ecosystems, the Ascomycota and Basidiomycota dominate Australian soils, and fungal diversity declines as climates become more arid. Climate and the water balance exert dominant control on soil fungal abundance and diversity, mediated by interactions between ecosystem type, the ensuing vegetation and edaphic factors, such as organic matter, clay and iron-oxide mineralogy, pH and nutrients. Soil organic matter and mineralogy, represented by absorptions of visible–near-infrared (vis–NIR) radiation, helped to improve characterisation of the abiotic controls on soil fungi. This better representation of edaphic factors improved the predictability of the models by up to 40%. Our findings contribute to the understanding of fungal ecology at a macroecological scale. They help to appreciate better the links between fungi, soil and the environment, which underpin ecosystem stability and resilience and have implications for developing strategies for preservation, adaptation and mitigation of global change.

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