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   Cirsium arvense (herbacée)  English     
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         Études de cas sur la gestion
    Alberta
    According to Nuzzo (1997), in Alberta, Canada, spring burning in a marsh favored growth of native species and did not alter C. arvense biomass. An August fire increased biomass and shoot density of the weed, which averaged 63 g/sq-m vs. 5 g/sq-m, and 20 shoots/sq-m vs. 0.9 shoots/sq-m, on burned and unburned plots, respectively. Seedling density also increased following the summer fire. In another wetland in Alberta, Canada, C. arvense cover was not affected by fire, but increased when the wetland area was subjected to drought.
    Bronydd Mawr
    A project was undertaken between April 2000 and March 2003 to test an integrated approach to thistle management combining grazing, mechanical techniques and herbicide application to obtain a reduction in Cirsium arvense density and long-term maintenance of low population levels, whilst minimising the impact upon non-target species. The study developed and tested combinations of these control techniques. The key objectives being to a) examine the effect of the timing and severity of grazing on thistle populations and b) examine the impact of cutting and herbicide application and their interactions with grazing regimes. Results of the study indicate that an integrated approach increased the level of reduction in thistle density and decreased the impact of the control methods adopted on non-target species.
    For more details please see ConservationEvidence.com, Case study 96: Integrated herbicide, mechanical and grazing control of creeping thistle Cirsium arvense on grasslands at Bronydd Mawr, Wales and Marsh Gibbon, England. [extracted from: Pywell R., Tallowin J. & Masters G. (2004) Effects of grazing management on creeping thistle and other injurous weeds and intergration of grazing with weed control, review report of project BD1437, DEFRA, UK].
    Marsh Gibbon
    A project was undertaken between April 2000 and March 2003 to test an integrated approach to thistle management combining grazing, mechanical techniques and herbicide application to obtain a reduction in Cirsium arvense density and long-term maintenance of low population levels, whilst minimising the impact upon non-target species. The study developed and tested combinations of these control techniques. The key objectives being to a) examine the effect of the timing and severity of grazing on thistle populations and b) examine the impact of cutting and herbicide application and their interactions with grazing regimes. Results of the study indicate that an integrated approach increased the level of reduction in thistle density and decreased the impact of the control methods adopted on non-target species.
    For more details please see ConservationEvidence.com, Case study 96: Integrated herbicide, mechanical and grazing control of creeping thistle Cirsium arvense on grasslands at Bronydd Mawr, Wales and Marsh Gibbon, England. [extracted from: Pywell R., Tallowin J. & Masters G. (2004) Effects of grazing management on creeping thistle and other injurous weeds and intergration of grazing with weed control, review report of project BD1437, DEFRA, UK].
    New Zealand
    Three agents have been released to attack Californian thistle: Californian thistle flea beetle, Californian thistle leaf beetle Lema cyanella and Californian thistle gall fly Urophora stylata. Despite being released widely throughout the country the flea beetle is not believed to have established, and the leaf beetle remains rare and unlikely to have a significant impact on the plant. The gall fly is showing more promise but cannot control Californian thistles alone. Additional agents, both insects and pathogens, are being investigated (Landcare Research).
    Quebec
    Cassida rubignosa causes only minimal damage in Quebec (Nuzzo, 1997).
    Virginia
    Cassida rubignosa causes severe defoliation of C. arvense in Virginia and Maryland (Nuzzo, 1997).


         Ressources pour la gestion/Liens

    4. IUCN/SSC Invasive Species Specialist Group (ISSG)., 2010. A Compilation of Information Sources for Conservation Managers.
            Résumé: This compilation of information sources can be sorted on keywords for example: Baits & Lures, Non Target Species, Eradication, Monitoring, Risk Assessment, Weeds, Herbicides etc. This compilation is at present in Excel format, this will be web-enabled as a searchable database shortly. This version of the database has been developed by the IUCN SSC ISSG as part of an Overseas Territories Environmental Programme funded project XOT603 in partnership with the Cayman Islands Government - Department of Environment. The compilation is a work under progress, the ISSG will manage, maintain and enhance the database with current and newly published information, reports, journal articles etc.
    5. Kluth, S., Kruess, A & Tscharntke, T ., 2005. Effects of two pathogens on the performance of Cirsium arvense in a successional fallow Weed Research Volume 45 Issue 4 Page 261

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ISSG Landcare Research NBII IUCN University of Auckland