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  • 1
    Online Resource
    Online Resource
    CSIRO Publishing ; 1997
    In:  Australian Journal of Botany Vol. 45, No. 6 ( 1997), p. 1055-
    In: Australian Journal of Botany, CSIRO Publishing, Vol. 45, No. 6 ( 1997), p. 1055-
    Abstract: A range of diaspore and mature plant attributes of the species represented in the germinable seed bank of a semi-arid subtropical Queensland sheep rangeland was investigated. The attributes of both the diaspores themselves and the plants that produced them changed as distance from water increased. Close to the water source, species with prostrate or erect growth habit and with low palatability and capsular fruits were common, whereas further from the water source plants with ascending growth habits, high palatability and mericarpic fruits were more frequent. At close proximity to water, species with diaspores that germinated rapidly, were unornamented, with unassisted dispersal and rounded in shape were common, whereas at greater distance from water, species tended to possess diaspores which germinated slowly, were ornamented (possessed awns, barbs, or hairs), with an elongated shape. Longevity of the plants (annual or perennial) was not significantly affected by distance from water. The dormant, vegetative and reproductive phases of plants that are successfully incorporated into the germinable soil seed bank can, therefore, be related to success under the different stocking intensities present at different distances from water.
    Type of Medium: Online Resource
    ISSN: 0067-1924
    Language: English
    Publisher: CSIRO Publishing
    Publication Date: 1997
    detail.hit.zdb_id: 1496155-6
    SSG: 12
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  • 2
    Online Resource
    Online Resource
    Wiley ; 2018
    In:  Austral Ecology Vol. 43, No. 1 ( 2018-02), p. 76-88
    In: Austral Ecology, Wiley, Vol. 43, No. 1 ( 2018-02), p. 76-88
    Abstract: Vehicles play a significant role in spreading plants, both in terms of quantity and quality (species). This study was conducted in Southeast Queensland to determine the role of utility vehicles in spreading seeds. These vehicles were found to carry up to 397 seeds per vehicle and in all four seasons of the year, with the majority of these species being alien to Australia and/or Queensland. The largest seed loads were found in autumn in this summer rainfall environment. Seeds were shown to attach to all parts of the vehicle, often in mud picked up from the ground, affixed directly to the engine or radiator, or carried into the cabin by the driver. Therefore, much of the seed load is to be found on the underside, on the back and front mudguards while smaller collections were found in the cabin, on the radiator and engine, and on the tyres. Fewer viable seeds were found on the engine, presumably as desiccation and heat contributed more to their death on this part of the vehicle. One method used to reduce weed seed spread by vehicles in Queensland is washing and vacuuming of vehicles. From the present study, these procedures would need to be applied to all parts of the vehicle and in all seasons of the year.
    Type of Medium: Online Resource
    ISSN: 1442-9985 , 1442-9993
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2018
    detail.hit.zdb_id: 2095166-8
    detail.hit.zdb_id: 2019899-1
    SSG: 12
    SSG: 14
    SSG: 7,29
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