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    Potential Distribution of the Australian Native Chloris truncata Based on Modelling Both the Successful and Failed Global Introductions

    188910_65942_Chloris_climate_change_2012_PlosONE.pdf (892.6Kb)
    Access Status
    Open access
    Authors
    Michael, Pippa
    Yeoh, P.
    Scott, J.
    Date
    2012
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Michael, Pippa J. and Yeoh, Paul B. and Scott, John K. 2012. Potential Distribution of the Australian Native Chloris truncata Based on Modelling Both the Successful and Failed Global Introductions. PLoS ONE. 7 (7): e42140.
    Source Title
    PLoS ONE
    DOI
    10.1371/journal.pone.0042140
    ISSN
    19326203
    Remarks

    This article is published under the Open Access publishing model and distributed under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/3.0/ Please refer to the licence to obtain terms for any further reuse or distribution of this work.

    URI
    http://hdl.handle.net/20.500.11937/7174
    Collection
    • Curtin Research Publications
    Abstract

    Our aim was to model the current and future potential global distribution of Chloris truncata (windmill grass) based on the plant’s biology, soil requirements and colonisation success. The growth response of C. truncata to constant temperatures and soil moisture levels were measured and estimated respectively, to develop parameters for a CLIMEX bioclimatic model of potential distribution. The native distribution in eastern Australia and naturalised distribution in Western Australia was also used to inform the model. Associations with soil types were assessed within the suitable bioclimatic region in Australia. The global projection of the model was tested against the distribution of soil types and the known successful and failed global introductions. The verified model was then projected to future conditions due to climate change. Optimal temperature for plant development was 28°C and the plant required 970 degree-days above a threshold of 10°C. Early collection records indicate that the species is native to Queensland, New South Wales and Victoria. The plant has been introduced elsewhere in Australia and throughout the world as a wool contaminant and as a potential pasture species, but some of the recorded establishments have failed to persist. The CLIMEX model projected to the world reflected effectively both the successful and failed distributions. The inclusion of soil associations improved the explanation of the observed distribution in Australia, but did not improve the ability to determine the potential distribution elsewhere, due to lack of similarity of soil types between continents. The addition of a climate change projection showed decreased suitability for this species in Australia, but increased suitability for other parts of the world, including regions where the plant previously failed to establish.

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