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   Elodea canadensis (水生植物)  English   
生态 分布 管理 影响 参考数据 联系


         管理信息

    物理方法:机械清除可暂时减少其族群和扩散。但是,必须防止植物碎片蔓延,可在进行机械处理之前先在下游放过滤器。所有植物清除必须仔细处理,以防止传播碎片(CAB国际, 2005)。机械控制方法可以在短时间内很容易地减少和控制此植物。切下来的杂草应该从水中取出,以避免水中脱氧。持续的削砍可弱化该植物,最终让它消失。其它适当的机械控制方法,包括用手拔除,耙除,链条,杂草桶,杂草船或挖沙船(CEH, 2004)。

    生物方法:引入草食性鱼类如鲤鱼已建议作为一个可能的控制方法在控制这种水草。不过,应该进行更多的研究,鲤鱼的影响可能会增加不想要的物种的生物量,牺牲想要的物种(鲍默,雅各布布和Sainty, 1995)。鲤鱼和其它底部觅食的鱼类,会使水质浑浊,也可有效防止植物经过机械或除草剂去除后重新生长(CEH, 2004)。此外,最近发现一种镰刀菌藻真菌(Fusarium sp.)经实验室试验确定,可以破坏此植物(戈拉施, 2006)。

    化学方法:敌草快除草剂和硫酸铜或螯合铜可用于静止的水域。增加铜的使用可以改善处理效果相较于单独使用敌草快除草剂,也有利于抑制藻类。Terbutryne用于控制各种沈水杂草。丙烯醛可用于流动水域的暂时控制,把丙烯醛注入水中,让它流过杂草床即可(鲍默,雅各布布和Sainty, 1995)。

    环境控制法:遮荫可控制多数沉水植物。这可以经由在水体南边种植树木,或使用不透明浮片(CEH, 2004)。 English   



         地点特有的管理信息
    Australia
    Control of Elodea canadensis is aided by draining and exposure of sediments to high summer temperatures or winter frosts (Bowmer, Jacobs & Sainty, 1995). In addition, the recommended herbicides for use in Australia are Cupracide and Reglone (DAF). The herbicides most widely used in Australia in underwater treatments are Diquat and Endothal. However, other control methods commonly used are hand weeding, mechanical digger, roto-tiller, mechanical weed cutter/harvester, suction dredging, nutrient control, shading and bottom lining, water level manipulation, and using Chinese Grass Carp (Harper, Chisholm & Chandrasena, 2007).
    Czech Republic
    Control of Elodea canadensis is affected by a combination of summer and winter drainage (Bowmer, Jacobs & Sainty, 1995).
    New Zealand
    Elodea canadensis is considered uncontrolled or rarely managed based on the aquatic weed risk assessment model. In addition, it is considered well-naturalised and ranked at a medium risk level (Champion, Hofstra & Clayton, 2007). The herbicides most widely used in New Zealand in underwater treatments are Diquat and Endothal. However, other control methods commonly used are hand weeding, mechanical digger, roto-tiller, mechanical weed cutter/harvester, suction dredging, nutrient control, shading and bottom lining, water level manipulation, and using Chinese Grass Carp (Harper, Chisholm & Chandrasena, 2007).


         管理资源 /链接

    1. Barrat-Segretain, Marie-Helene; Bornette, Gudrun., 2000. Regeneration and colonization abilities of aquatic plant fragments: Effect of disturbance seasonality. Hydrobiologia. 421(1-3). March 1, 2000. 31-39.
    2. Barrat-Segretain, Marie-Helene; Cellot, Bemard., 2007. Response of invasive macrophyte species to drawdown: The case of Elodea sp. Aquatic Botany. 87(4). NOV 2007. 255-261.
    3. Bowmer, H. Kathleen, S.W.L. Jacobs & G.R. Sainty., 1995. Identification, Biology and Management of Elodea canadensis, Hydrocharitaceae. J. Aquat. Plant Manage. 33: 13-19 1995
    4. Bowmer, K., Jacobs, S.W.L & Sainty, G.R. 1995. Identification, biology, and management of Elodea Canadensis, Hydrocharitaceae. Journal of Aquatic Plant Management 33: 13-19.
    6. Champion, Paul D., Hofstra, Deborah E. & Clayton, John S. 2007. Border control for potential aquatic weeds. Stage 3. Weed risk management. Science & Technical Publishing New Zealand Department of Conservation. 2007.
    9. Glomski, Lee Ann M.; Skogerboe, John G.; Getsinger, Kurt D., 2005. Comparative efficacy of diquat for control of two members of the hydrocharitaceae: Elodea and Hydrilla. Journal of Aquatic Plant Management. 43 JUL 2005. 103-105.
    13. Josefsson, Melanie; Andersson, Berta., 2001. The environmental consequences of alien species in the Swedish lakes Malaren, Hjalmaren, Vanern and Vattern. Ambio. 30(8). December, 2001. 514-521.
    14. Larson, D. 2007. Non-indigenous Freshwater Plants – Patterns, Processes and Risk Evaluation. Doctoral dissertation. ISSN 1652-6880, ISBN 91-576-7314-5.
    16. Riis, Tenna; Sand-Jensen, Kaj., 2006. Dispersal of plant fragments in small streams. Freshwater Biology. 51(2). FEB 2006. 274-286.
    17. Skurdal, J.; Garnas, E.; Taugbol, T., 2002. Management strategies, yield and population development of the noble crayfish Astacus astacus in Lake Steinsfjorden. Bulletin Francais de la Peche et de la Pisciculture.(367). Decembre 2002. 845-860.

         结果页: 1  


ISSG Landcare Research NBII IUCN University of Auckland