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   Didymosphenia geminata (藻类)  English   
生态 分布 管理 影响 参考数据 联系


         管理信息

    文化教育:纽西兰生物安全局在南部发现双生双楔藻之后,发布了以下的意见来遏制此藻类:

    1.离开河川以前,消除明显的藻类团块,注意寻找隐藏在船舱内的藻类团块。离开灾区时把藻团留在受影响的灾区。如果您发现藻团,不要把藻团洗到水渠内。应使用化学药剂或干燥处,方法如下。
    2.浸泡和擦洗所有物品至少一分钟,使用热(60°C)水,百分之二的家用漂白水或百分之五盐溶液,尿湿疹清洁液,消毒洗手液,或餐具洗涤剂。
    注意:添加200毫升到装满水的十公升水桶,可得到百分之二的溶液。添加500毫升(2重型杯)到装满水的十公升水桶,可得到百分之五的溶液。

    如果无法使用步骤二的化学清洗方法,可改用以下方法。受感染的设备必须完全干燥至少两天,才可以安全地使用于未受影响水域。潮湿的设备可能有些地方会吸收水分需要较长干燥时间,因为干燥 48小时后被困住的睡份才会开始蒸发。有些设备可能永远不会达到完全干燥,取决于它是如何以及在哪里存储(鞋子,海钓衣裤,救生衣,雨衣,喷雾裙,船只进水口,轮胎等),因此这些物品应使用化学处理。
    在任何情况下应鱼类,植物或其它物品,不得从受感染的水域移到未受感染的水域。 English   



         地点特有的管理信息
    Quebec
    Any sighting of D. geminata blooms have to be reported to the nearest Ministère du Développement durable, de l’Environnement et des Parcs (MDDEP) regional office. Recommendations have been made to restrict the use of equipment, boats, clothing and other items to a single waterway wherever possible (MDDEP-MRNF, 2007).
    South Island
    D. geminata is listed as an unwanted organism under the Biosecurity Act 1993. It is an offence to knowingly spread an unwanted organism with penalites of up to 5 years imprisonment, and/or a fine of up to $100,000.

    To ensure no further spread of D. geminata, Biosecurity New Zealand advises users of rivers to restrict equipment, boats, clothing and other items for exclusive use in a single waterway, wherever possible. If moving items between waterways Biosecurity New Zealand list 3 'must do activities': 1) Check: Before leaving the river, remove all obvious clumps of algae and look for hidden clumps. Leave them at the affected site. If you find any later, do not wash them down drains. Treat them with the approved cleaning methods below, dry them and put them in a rubbish bin. 2) Clean: Soak and scrub all items for at least one minute in either, hot (60°C) water, a two percent solution of household bleach or a five percent solution of salt, nappy cleaner, antiseptic hand cleaner or dishwashing detergent. A two percent solution is 200 ml, a five percent solution is 500 ml (two large cups), with water added to make 10 litres. 3) Dry: If cleaning is not practical (i.e. livestock), after the item is completely dry to touch, wait an additional 48 hours before contact or use in any other waterway. Please follow this link cleaning methods for freshwater activities for more details.

    Please follow this link Biosecurity New Zealand Didymosphenia Incursion Response Science/Technical Work for reports/documents of the science and technical work undertaken to reduce uncertainties underlying Biosecurity New Zealands decision-making on response options and long term management for Didymosphenia incursion.

    Please follow this link for a Case study of the management response to the incursion of D. geminata in New Zealand.



         管理资源 /链接

    3. Biosecurity New Zealand. 2007. Didymosphenia geminata: Affected Waterways.
            摘要: Available from: http://www.biosecurity.govt.nz/files/pests-diseases/plants/didymo/didymo-affected-waterways.pdf [Accessed 22 March 2007]
    4. Biosecurity New Zealand. May 2005. Factsheet Don't spread Didymo.
            摘要: This fact sheet contains basic information about Didymo and how to prevent it from spreading.
    15. MDDEP-MRNF Scientific Advisory Committee on Didymosphenia geminata, 2007. What Is Didymo and How Can We Prevent It From Spreading In Our Rivers?, Québec, ministère du Développement durable, de l’Environnement et des Parcs et ministère des Ressources naturelles et de la Faune, ISBN: 978-2-550-49391-4 (PDF), 10 p.
    16. Spaulding, S & Leah Elwell, 2007a. Increase in nuisance blooms and geographic expansion of the freshwater diatom Didymoshphenia geminata: Recommendations for response. White paper January 2007

         结果页: 1  


ISSG Landcare Research NBII IUCN University of Auckland