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  • Fire alters soil labile stoichiometry and litter nutrients in Australian eucalypt forests

    Author(s)
    Butler, Orpheus M
    Lewis, Tom
    Chen, Chengrong
    Griffith University Author(s)
    Chen, Chengrong
    Butler, Orpheus M.
    Year published
    2017
    Metadata
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    Abstract
    Ecological stoichiometry may be used to investigate the impacts of fire regime, as fire regime can influence the cycling and balance of elements within forest ecosystems. We investigated the effects of fire history on soil and litter stoichiometry in four forest sites in Queensland, Australia. Soil and litter in recently burned areas were compared with those in areas with no recent fire. Effects of burning on concentrations and ratios of multiple pools of carbon (C), nitrogen (N) and phosphorus (P) in soil varied between sites, indicating that site and fire regime characteristics regulate these responses. Labile pools of ...
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    Ecological stoichiometry may be used to investigate the impacts of fire regime, as fire regime can influence the cycling and balance of elements within forest ecosystems. We investigated the effects of fire history on soil and litter stoichiometry in four forest sites in Queensland, Australia. Soil and litter in recently burned areas were compared with those in areas with no recent fire. Effects of burning on concentrations and ratios of multiple pools of carbon (C), nitrogen (N) and phosphorus (P) in soil varied between sites, indicating that site and fire regime characteristics regulate these responses. Labile pools of soil C, N and P were more responsive to burning than total pools, and labile soil C : P and N : P ratios tended to be lower in recently burned areas, consistent with our expectations. These changes suggest that the disparate volatilisation temperatures of these elements influence post-fire soil stoichiometry, and that P cycling may be enhanced in some post-fire environments. Fire-induced changes to litter chemistry were not consistent with soil effects, although litter was generally nutrient-enriched in recently burned areas. Our results reveal the potential for fire to alter elemental balances and thus modify C and nutrient cycling in the plant–soil system.
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    Journal Title
    International Journal of Wildland Fire
    Volume
    26
    DOI
    https://doi.org/10.1071/WF17072
    Subject
    Environmental Science and Management not elsewhere classified
    Environmental Science and Management
    Ecology
    Forestry Sciences
    Publication URI
    http://hdl.handle.net/10072/368331
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    • Journal articles

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