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    Do active-dispersing insects dominate the invertebrate fauna of rock pools in the wet–dry tropics, Kimberley, Australia?

    84506.pdf (698.8Kb)
    Access Status
    Open access
    Authors
    Carey, N.
    Cross, Adam
    Barrett, M.D.
    Robson, B.J.
    Date
    2019
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Carey, N. and Cross, A.T. and Barrett, M.D. and Robson, B.J. 2019. Do active-dispersing insects dominate the invertebrate fauna of rock pools in the wet–dry tropics, Kimberley, Australia? Aquatic Conservation: Marine and Freshwater Ecosystems. 29 (8): pp. 1175-1189.
    Source Title
    Aquatic Conservation: Marine and Freshwater Ecosystems
    DOI
    10.1002/aqc.3112
    ISSN
    1052-7613
    Faculty
    Faculty of Science and Engineering
    School
    School of Molecular and Life Sciences (MLS)
    Remarks

    This is the peer reviewed version of the following article: Carey, N, Cross, AT, Barrett, MD, Robson, BJ. Do active-dispersing insects dominate the invertebrate fauna of rock pools in the wet–dry tropics, Kimberley, Australia? Aquatic Conserv: Mar Freshw Ecosyst. 2019; 29: 1175– 1189, which has been published in final form at https://doi.org/10.1002/aqc.3112. 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/20.500.11937/84624
    Collection
    • Curtin Research Publications
    Abstract

    1. Invertebrate assemblages of tropical freshwater rock pools (FRPs) are poorly known compared with temperate regions, where FRPs contain specialized, endemic taxa of high conservation value. Invertebrates were sampled from pristine FRPs in the Morgan River catchment in the Australian wet–dry tropics in the 2015 and 2016 wet seasons. Taxa were classified as either active or passive dispersers and by functional feeding groups. A range of physical variables were examined to identify associations with invertebrate assemblages.

    2. Forty‐seven taxa were identified from FRPs; most were actively dispersing predatory insects, primarily Coleoptera and Hemiptera. Five adult insect species were found in most pools; other taxa were rare and scattered across FRPs. Two previously undescribed species of Spinicaudata were collected, but few crustacean taxa were recorded, and passively dispersing taxa were rare. Species accumulation curves indicated that had more pools been sampled, more taxa would have been collected in 2015, but in 2016 most species were collected.

    3. There was no pattern in FRP assemblages related to any physical variable, but the assemblages in pools were correlated between sampling times. An opportunistic and mobile assemblage composed mostly of actively dispersing predatory insects may explain the absence of relationships with measured variables. Low hydrological stability in the wet–dry tropics may be associated with low taxon richness.

    4. The dominance of actively dispersing insects is in contrast with FRP assemblages in temperate and arid regions. Studies of a wider range of FRPs from tropical regions are required to determine whether the fauna of these Kimberley FRPs are typical, and to fully describe short‐range endemic species across the Kimberley and elsewhere.

    5. The FRPs have conservation value as habitat for endemic, specialist rock‐pool taxa, contributing to regional species pools. At present, a lack of knowledge of endemic FRP specialist species in tropical regions, including the Kimberley, impedes our ability to protect and conserve these species from disturbance.

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