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Forest Research home > Research themes > Protecting trees > Alien invasive species and international trade A pathway approach towards prevention of movement of pests and pathogens with live plants in international trade
Asian longhorn beetle, Anoplophora glabripennis. A pest of broadleaved trees from China that is frequently intercepted on wood packaging. It has established and caused damage to trees in several EU Member States and in two cities in the USA. Asian longhorn beetle exotic pest alert (PDF-1721K) Emerald ash borer, Agrilus planipennis. A pest of ash trees from China. Although this has not been intercepted, this has established in North America where it is causing severe damage and tree mortality to native elms. (Photo: David Cappaert, Michigan State University, www.forestryimages.org) Emerald ash borer exotic pest alert (PDF-4140K) Phytophthora ramorum: the causal agent of sudden oak death in California. This pathogen affects understorey shrubs, such as rhododendron, where it proliferates and is easily transmitted to infect living trees in the vicinity. Phytophthora ramorum exotic pest alert (PDF-184K) More information about Phytophthora ramorum The approachMany forest pests, both insects and pathogens, have entered new lands via plants for planting (nursery stock). At its inaugural meeting in Poland in July 2006, the IUFRO Unit decided to endorse a pathway approach to providing the scientific background and advice for regulators concerned with preventing movement of pests with live plants. This will be similar to that adopted for wood packaging material. Best management practices effective at preventing known pests will significantly reduce the risk of introducing unknown pests as well. Recently, the International Plant Protection Convention (IPPC) established an expert working group to develop an international standard for plants for planting. The IUFRO Unit believes strong control of this important and diverse pathway is only possible through international agreement. An international consensus of scientists can provide critical support to the regulatory community as technical justification is needed to support the development of effective regulation. Concept paperThe IUFRO Unit has, through a small group involving:
prepared a concept paper on this increasingly important subject: Recommendation of a Pathway Approach for Regulation of Plants for Planting (PDF-52K) Please note that it is a statement of facts by concerned scientists, rather than a policy statement by any government. How you can helpWe hope you will help stem the tide of invasive forest pests. Here is what you can do:
If you would like to receive future mailings about the above meeting, please email: kbritton01@fs.fed.us. | International Union of Forest Research Organisations (IUFRO) Unit 7.03.12 |
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