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    Stygofaunal community trends along varied rainfall conditions: Deciphering ecological niche dynamics of a shallow calcrete in Western Australia

    80997.pdf (1.784Mb)
    Access Status
    Open access
    Authors
    Saccò, Mattia
    Blyth, Alison
    Humphreys, W.F.
    Karasiewicz, S.
    Meredith, K.T.
    Laini, A.
    Cooper, S.J.B.
    Bateman, Bill
    Grice, Kliti
    Date
    2020
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Saccò, M. and Blyth, A.J. and Humphreys, W.F. and Karasiewicz, S. and Meredith, K.T. and Laini, A. and Cooper, S.J.B. et al. 2020. Stygofaunal community trends along varied rainfall conditions: Deciphering ecological niche dynamics of a shallow calcrete in Western Australia. Ecohydrology. 13 (1): Article No. e2150.
    Source Title
    Ecohydrology
    DOI
    10.1002/eco.2150
    ISSN
    1936-0584
    Faculty
    Faculty of Science and Engineering
    School
    School of Earth and Planetary Sciences (EPS)
    Funding and Sponsorship
    http://purl.org/au-research/grants/arc/LP140100555
    Remarks

    This is the peer reviewed version of the following article: Saccò, M. and Blyth, A.J. and Humphreys, W.F. and Karasiewicz, S. and Meredith, K.T. and Laini, A. and Cooper, S.J.B. et al. 2020. Stygofaunal community trends along varied rainfall conditions: Deciphering ecological niche dynamics of a shallow calcrete in Western Australia. Ecohydrology. 13 (1): Article No. e2150, which has been published in final form at 10.1002/eco.2150. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self- Archived Versions.

    URI
    http://hdl.handle.net/20.500.11937/80935
    Collection
    • Curtin Research Publications
    Abstract

    © 2019 John Wiley & Sons, Ltd. Groundwaters host highly adapted fauna, known as stygofauna, which play a key role in maintaining the functional integrity of subterranean ecosystems. Stygofaunal niche studies provide insights into the ecological dynamics shaping the delicate balance between the hydrological conditions and community diversity patterns. This work aims to unravel the ecological trends of a calcrete stygofaunal community, with special focus on niche dynamics through the Outlying Mean Index analysis (OMI) and additional calculation of Within Outlying Mean Indexes (WitOMI), under three rainfall regimes. Temperature and pH changed significantly among different rainfall conditions (P <.001), and together with salinity were the most influential drivers in shaping stygofaunal assemblages. These environmental conditions, linked with nutrient fluctuations in the groundwater, constrained changes in niche occupation for water mites, two species of beetles and juvenile amphipods (OMI analysis, P <.05). The WitOMI analysis revealed differential subniche breadths linked with taxa-specific adaptations after different rainfall conditions. Our results indicate that stygofaunal niches are closely linked to the hydrodynamic conditions influenced by different rainfall regimes. Further long-term investigations, incorporating broader ecological perspectives, will help to understand the impacts associated with climate change and anthropogenic pressures on one of the most threatened ecosystems in the world.

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